CALICE ReportCALICE ReportCALICE ReportCALICE Report

Nigel Watson

(Birmingham Univ)

bullMotivationbullTest beam programmebullCurrent resultsbullSummary

For the CALICE Collaboration

[Particular thanks to Erika Garutti Fabrizio Salvatore David Ward]

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Mass (jet1+jet2)

Mass (

jet3

+je

t4)

Mass (

jet3

+je

t4)

Mass (jet1+jet2)

EE = 60EEE = 60E EE = 30EEE = 30E

Equivalent best LEP detector Goal at ILC

Essential to reconstruct jet-jet invariant masses in hadronic

final states eg separation of W+W Z0Z0 tth Zhh H

ILC high performance ILC high performance

calorimetrycalorimetry

ILC high performance ILC high performance

calorimetrycalorimetry

LEPSLD optimal jet reconstruction by energy flow Explicit association of tracksclusters Replace poor calorimeter measurements with tracker

measurements ndash no ldquodouble countingrdquo

Little benefit from beam energy constraint cf LEP

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Shower containment in ECAL X0 large

Small Rmoliere and X0 ndash compact and narrow showers

intX0 large EM showers early hadronic showers late

ECAL HCAL inside coil

Lateral separation of neutralcharged particlesrsquoparticle flowrsquo

Strong B field to suppresses large beam-related background in detector

Compact ECAL (cost of coil)

Tungsten passive absorber

Silicon pixel readout minimal interlayer gaps stability

hellipbut expensivehellip Also considering ldquoSwap-inrdquo alternatives to Si diode detector designs

eg in LDC SiD CMOS MAPS process Scintillators

Implications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL design

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

CALICE from MC to CALICE from MC to realityreality

CALICE from MC to CALICE from MC to realityreality

Intermediate task

Build prototype calorimeters tobull Establish the technology bull Collect hadronic showers data with unprecedented granularity to

- tune reconstruction algorithms- validate existing MC models

Final goal

A high granularity calorimeter optimised for the Particle Flow measurement of multi-jets final state at the International Linear Collider

CAlorimeter for the LInear Collider Experiment

Scint Tiles-Fe AHCAL

Scint Strips-Fe TCMT

Imaging calorimeter

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Mass (jet1+jet2)

Mass (

jet3

+je

t4)

Mass (

jet3

+je

t4)

Mass (jet1+jet2)

EE = 60EEE = 60E EE = 30EEE = 30E

Equivalent best LEP detector Goal at ILC

Essential to reconstruct jet-jet invariant masses in hadronic

final states eg separation of W+W Z0Z0 tth Zhh H

ILC high performance ILC high performance

calorimetrycalorimetry

ILC high performance ILC high performance

calorimetrycalorimetry

LEPSLD optimal jet reconstruction by energy flow Explicit association of tracksclusters Replace poor calorimeter measurements with tracker

measurements ndash no ldquodouble countingrdquo

Little benefit from beam energy constraint cf LEP

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Shower containment in ECAL X0 large

Small Rmoliere and X0 ndash compact and narrow showers

intX0 large EM showers early hadronic showers late

ECAL HCAL inside coil

Lateral separation of neutralcharged particlesrsquoparticle flowrsquo

Strong B field to suppresses large beam-related background in detector

Compact ECAL (cost of coil)

Tungsten passive absorber

Silicon pixel readout minimal interlayer gaps stability

hellipbut expensivehellip Also considering ldquoSwap-inrdquo alternatives to Si diode detector designs

eg in LDC SiD CMOS MAPS process Scintillators

Implications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL design

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

CALICE from MC to CALICE from MC to realityreality

CALICE from MC to CALICE from MC to realityreality

Intermediate task

Build prototype calorimeters tobull Establish the technology bull Collect hadronic showers data with unprecedented granularity to

- tune reconstruction algorithms- validate existing MC models

Final goal

A high granularity calorimeter optimised for the Particle Flow measurement of multi-jets final state at the International Linear Collider

CAlorimeter for the LInear Collider Experiment

Scint Tiles-Fe AHCAL

Scint Strips-Fe TCMT

Imaging calorimeter

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Shower containment in ECAL X0 large

Small Rmoliere and X0 ndash compact and narrow showers

intX0 large EM showers early hadronic showers late

ECAL HCAL inside coil

Lateral separation of neutralcharged particlesrsquoparticle flowrsquo

Strong B field to suppresses large beam-related background in detector

Compact ECAL (cost of coil)

Tungsten passive absorber

Silicon pixel readout minimal interlayer gaps stability

hellipbut expensivehellip Also considering ldquoSwap-inrdquo alternatives to Si diode detector designs

eg in LDC SiD CMOS MAPS process Scintillators

Implications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL designImplications eg for ECAL design

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

CALICE from MC to CALICE from MC to realityreality

CALICE from MC to CALICE from MC to realityreality

Intermediate task

Build prototype calorimeters tobull Establish the technology bull Collect hadronic showers data with unprecedented granularity to

- tune reconstruction algorithms- validate existing MC models

Final goal

A high granularity calorimeter optimised for the Particle Flow measurement of multi-jets final state at the International Linear Collider

CAlorimeter for the LInear Collider Experiment

Scint Tiles-Fe AHCAL

Scint Strips-Fe TCMT

Imaging calorimeter

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

CALICE from MC to CALICE from MC to realityreality

CALICE from MC to CALICE from MC to realityreality

Intermediate task

Build prototype calorimeters tobull Establish the technology bull Collect hadronic showers data with unprecedented granularity to

- tune reconstruction algorithms- validate existing MC models

Final goal

A high granularity calorimeter optimised for the Particle Flow measurement of multi-jets final state at the International Linear Collider

CAlorimeter for the LInear Collider Experiment

Scint Tiles-Fe AHCAL

Scint Strips-Fe TCMT

Imaging calorimeter

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Test beam prototypesTest beam prototypesTest beam prototypesTest beam prototypes

1x1cm2 lateral segmentation1 X0 longitudinal segment~1 total material ~24 X0

3x3cm2 tiles lateral segmentation~45 in 38 layers

5x100cm2 strips~5 in 16 layer

10 GeV pion shower CERN test beam

10 GeV pion shower CERN test beam

SiW ECALSiW ECAL Scint-Fe HCALScint-Fe HCALScint-Fe tail catchermuon tracker

Scint-Fe tail catchermuon tracker

beam

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

The 2006 CERN The 2006 CERN installationinstallation

The 2006 CERN The 2006 CERN installationinstallation

HCAL

Tail Catcher

ECAL

beam AHCAL layer with high granular core readout

AHCAL layer with high granular core readout

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Event displayEvent displayEvent displayEvent display

Shower from Shower from a 40 GeV a 40 GeV ++

20 GeV +

HCAL only

REAL DATA

Clear structure visible in hadronic shower Back-scattered particle

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

HCAL TCMT

40GeVc pionwith CALICE online analysis software

Late shower in HCAL

Clear determination of the first interaction

Event displayEvent displayEvent displayEvent displayREAL DATA

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Beamline instrumentation Beamline instrumentation modellingmodelling

Beamline instrumentation Beamline instrumentation modellingmodelling

beam

Essential to model upstream material accuratelyto understand tracking system ndash effect ~003X0

Essential to model upstream material accuratelyto understand tracking system ndash effect ~003X0

eg DESY 2006beamline

G481p01

Data resolution systematically lower at low energies

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2006 Data2006 Data2006 Data2006 Data

Combined ECAL+HCAL+TCMT data samples from CERN

Samples for less than whole systemalso analysed

Preliminary results for ECAL and AHCALConcentrate on electromagnetic response

bullECAL AHCAL for electronsbullAHCAL for charged pions

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--

Geant 481p01Low energy excess (below MIP peak)

not 100 understoodMinor effect on total energy

Hit energy

Total ECAL EnergyeventECAL energyhit

EhitMIPs EmeasGeV

Meanresolutionfrom gaussian fit each energy

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution Em

eas

GeV

e- beam energyGeV

Em

eas

Eb

eam

Em

eas

Eb

eam

DESY

CERN

Non-linearities ~1Non-linearities ~1

G481p01E

E (

)

1sqrt(Ebeam)

∆EE=1713radic(EGeV)oplus054

A priori and optimised weightings

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileS

how

er

max layer

Sh

ow

er

max layer

Beam energy GeV

Cos(angle)

Layer (by W depth))

En

erg

yl

ayer

even

t (G

eV

)

Expected logarithmicbehaviour of shower maxand angular dependence

Hists G481p01

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2006 Data2006 Data2006 Data2006 Data

Combined ECAL+HCAL+TCMT data samples from CERN

Samples for less than whole systemalso analysed

Preliminary results for ECAL and AHCALConcentrate on electromagnetic response

bullECAL AHCAL for electronsbullAHCAL for charged pions

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--

Geant 481p01Low energy excess (below MIP peak)

not 100 understoodMinor effect on total energy

Hit energy

Total ECAL EnergyeventECAL energyhit

EhitMIPs EmeasGeV

Meanresolutionfrom gaussian fit each energy

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution Em

eas

GeV

e- beam energyGeV

Em

eas

Eb

eam

Em

eas

Eb

eam

DESY

CERN

Non-linearities ~1Non-linearities ~1

G481p01E

E (

)

1sqrt(Ebeam)

∆EE=1713radic(EGeV)oplus054

A priori and optimised weightings

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileS

how

er

max layer

Sh

ow

er

max layer

Beam energy GeV

Cos(angle)

Layer (by W depth))

En

erg

yl

ayer

even

t (G

eV

)

Expected logarithmicbehaviour of shower maxand angular dependence

Hists G481p01

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--ECAL hit energy 30 GeV eECAL hit energy 30 GeV e--

Geant 481p01Low energy excess (below MIP peak)

not 100 understoodMinor effect on total energy

Hit energy

Total ECAL EnergyeventECAL energyhit

EhitMIPs EmeasGeV

Meanresolutionfrom gaussian fit each energy

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution Em

eas

GeV

e- beam energyGeV

Em

eas

Eb

eam

Em

eas

Eb

eam

DESY

CERN

Non-linearities ~1Non-linearities ~1

G481p01E

E (

)

1sqrt(Ebeam)

∆EE=1713radic(EGeV)oplus054

A priori and optimised weightings

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileS

how

er

max layer

Sh

ow

er

max layer

Beam energy GeV

Cos(angle)

Layer (by W depth))

En

erg

yl

ayer

even

t (G

eV

)

Expected logarithmicbehaviour of shower maxand angular dependence

Hists G481p01

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution ECAL linearityresolution Em

eas

GeV

e- beam energyGeV

Em

eas

Eb

eam

Em

eas

Eb

eam

DESY

CERN

Non-linearities ~1Non-linearities ~1

G481p01E

E (

)

1sqrt(Ebeam)

∆EE=1713radic(EGeV)oplus054

A priori and optimised weightings

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileS

how

er

max layer

Sh

ow

er

max layer

Beam energy GeV

Cos(angle)

Layer (by W depth))

En

erg

yl

ayer

even

t (G

eV

)

Expected logarithmicbehaviour of shower maxand angular dependence

Hists G481p01

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

ECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileECAL longitudinal profileS

how

er

max layer

Sh

ow

er

max layer

Beam energy GeV

Cos(angle)

Layer (by W depth))

En

erg

yl

ayer

even

t (G

eV

)

Expected logarithmicbehaviour of shower maxand angular dependence

Hists G481p01

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCALAHCALAHCALAHCAL Hadronic showers intrinsically more interesting than electromagnetic

More challenge to model and build detector Proper understanding of electromagnetic showers (e- -) mandatory first

step prior to hadronic studies Performance monitoring multi-stage calibration Unlike ECAL do need digitisation simulation for meaningful

comparison of dataMC 1048729 Calibration is much more complicated than Si-W ECAL

Muons for MIP calibration equalise response zero suppression SiPM non-linearity corrections Lab calibration and LED light injection Temperature sensitivity 1C rarr 3 systematic uncertainty

963 of channels calibrated ~50 of remaining few are dead

Show August 2006 data - 15 planes (=29 X0) contains em shower Complications MC digitisation scheme required to compare MC with

data Cross talk non-linearity + Poisson statistics at pixel level noise

dead channel removal Selection of results to follow

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Well-modelled high energy tail

No hits (gt05MIP)systematically shifted

Poorer at higher energy Correction for non-linearityof SiPM response Or MC

h

itse

ven

t

h

itse

ven

t

Hit energy GeV Hit energy GeV

AHCAL response to eAHCAL response to e--AHCAL response to eAHCAL response to e--

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL linearity for eAHCAL linearity for e--AHCAL linearity for eAHCAL linearity for e--

Extract response+resolution from fits at each energy

Linearity OK

Residuals ~5 at 45 GeV

e- beam energyGeV

Recon

str

ucte

d e

nerg

yG

eV

e- beam energyGeV

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL AHCAL datadataAHCAL AHCAL datadata

AHCAL hit energies for pion data

Shower from Shower from a 40 GeV a 40 GeV ++

Veto on TCMT activityVeto on ECAL energy

AHCAL contained events

Before TCMT veto

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

linearity and resolutionlinearity and resolution linearity and resolutionlinearity and resolution

Resolution ~ compatible with (Geant3) MC models

Not yet comparison with G4 v89hellip

Coming soonhellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

AHCAL energy profilesAHCAL energy profilesAHCAL energy profilesAHCAL energy profiles

Longitudinal ndash contained in AHCAL

Longitudinal ndash contained in AHCAL

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

OutlookOutlookOutlookOutlook Complete understanding of 2007 data

In process of adding yet more realism to testbeam model (material instrumented regions etc)

Understanding beamline ndash characterisation of beam itself empirically or by modelling ~accelerator-style the transport line (BDSIM et al)

Longer term plans include Detailed study of hadronic shower substructure

separation of neutrons em hadronic components mip-like hellip ndash ldquodeep analysisrdquo

Clearly sensitive to details of models and CALICE actively pursuing this

Significant impact on particle flow algorithms in development for detector optimisation eg PandoraPFA which uses such assignments to improve event

reconstruction Essential to compare data from high granular detectors with simulations

Integrated approach to develop optimal calorimety not just HCAL Work on ldquodeep analysisrdquo ongoing but not ready for public consumption yet

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

2007 CERN Testbeam2007 CERN Testbeam

ECAL 54 PCBs (30 layers) 216 channelsPCB in central part and 108PCB in

bottom part Total channels 9072 Total radiation length 24 X0

AHCAL 38 fully commissioned modules 30 modules with fine granularity = 216 tiles 8 modules with coarse granularity = 141 tiles Total channels 7608 Total interaction length 45

TCMT 16 layers ndash fully instrumented Alternated cassettes (from layer 2 to 16) have been

staggered in X and Y layer 2 = nominal layer 3 (vert) = -1 inch in X layer 4 (hor) = +1 inch in Y repeated up to layer 16

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

A difficult starthellipA difficult starthellipA difficult starthellipA difficult starthellip

June 07 ndash from DESY to CERNhttpwwwpprhulacuk~calicefabWWWPictureshtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

The setup two weeks The setup two weeks laterhelliplaterhellip

The setup two weeks The setup two weeks laterhelliplaterhellip

Si-W ECAL

Sci-Fe HCAL

Sci-Fe Tail Catcher

MWPC

Veto

Trigger

G4 Workshop 13-Sep-2007 Nigel Watson Birmingham

2007 Beam instrumentation description

500 m

beam

3x310x10 trigger

all in mm

News on the beamline1) Cherenkov operated for eandp separation2) 3 xy pairs of MWPC with double readout3) 10x10 cm trigger only (no 3x3)4) amplitude ro of 1cm thick scint counter (20x20 inner veto) + outer veto with 20x20 cm hole to tag double particle5) hodoscope installed for initial muon runs and from ECAL chip irradiation to end

hodoscope

1 m

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

MWPCs and VetoMWPCs and Veto

Three MWPC (from CERN) 5050 ArCO2 gas mixture

X Y readout200 mV threshold (100 mV after August 8th)

Aligned wrt beam-line with 02 mm precision

Veto counters 4 scintillator counters Total dimension 100X100cm with 20x20cm hole

corresponding to the 20x20cm trigger scintillator

Nigel Watson Birmingham

Energy points and particle types

Proposed in TB plan Collected during TB

Energy (GeV) 681012151820253040506080 681012151820253040506080100120130150180

Particles plusmneplusmn plusmneplusmnprotons

Beam energies extrapolated from secondary beam Electron beam obtained sending secondary beam on Pb target

e separation achieved using Cherenkov threshold detector filled with He gas Possible to distinguish from e for energies from 25 to 6 GeV

proton separation achieved using Cherenkov threshold detector with N2 gas Possible to distinguish from protons for energies from 80 to 30

GeV

httpwwwpprhulacuk~calicefabWWWrunSummaryhtm

G4 Workshop 13-Sep-2007 Nigel Watson Birmingham

2007 Beam instrumentation description

500 m

beam

3x310x10 trigger

all in mm

News on the beamline1) Cherenkov operated for eandp separation2) 3 xy pairs of MWPC with double readout3) 10x10 cm trigger only (no 3x3)4) amplitude ro of 1cm thick scint counter (20x20 inner veto) + outer veto with 20x20 cm hole to tag double particle5) hodoscope installed for initial muon runs and from ECAL chip irradiation to end

hodoscope

1 m

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

MWPCs and VetoMWPCs and Veto

Three MWPC (from CERN) 5050 ArCO2 gas mixture

X Y readout200 mV threshold (100 mV after August 8th)

Aligned wrt beam-line with 02 mm precision

Veto counters 4 scintillator counters Total dimension 100X100cm with 20x20cm hole

corresponding to the 20x20cm trigger scintillator

Nigel Watson Birmingham

Energy points and particle types

Proposed in TB plan Collected during TB

Energy (GeV) 681012151820253040506080 681012151820253040506080100120130150180

Particles plusmneplusmn plusmneplusmnprotons

Beam energies extrapolated from secondary beam Electron beam obtained sending secondary beam on Pb target

e separation achieved using Cherenkov threshold detector filled with He gas Possible to distinguish from e for energies from 25 to 6 GeV

proton separation achieved using Cherenkov threshold detector with N2 gas Possible to distinguish from protons for energies from 80 to 30

GeV

httpwwwpprhulacuk~calicefabWWWrunSummaryhtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

MWPCs and VetoMWPCs and Veto

Three MWPC (from CERN) 5050 ArCO2 gas mixture

X Y readout200 mV threshold (100 mV after August 8th)

Aligned wrt beam-line with 02 mm precision

Veto counters 4 scintillator counters Total dimension 100X100cm with 20x20cm hole

corresponding to the 20x20cm trigger scintillator

Nigel Watson Birmingham

Energy points and particle types

Proposed in TB plan Collected during TB

Energy (GeV) 681012151820253040506080 681012151820253040506080100120130150180

Particles plusmneplusmn plusmneplusmnprotons

Beam energies extrapolated from secondary beam Electron beam obtained sending secondary beam on Pb target

e separation achieved using Cherenkov threshold detector filled with He gas Possible to distinguish from e for energies from 25 to 6 GeV

proton separation achieved using Cherenkov threshold detector with N2 gas Possible to distinguish from protons for energies from 80 to 30

GeV

httpwwwpprhulacuk~calicefabWWWrunSummaryhtm

Nigel Watson Birmingham

Energy points and particle types

Proposed in TB plan Collected during TB

Energy (GeV) 681012151820253040506080 681012151820253040506080100120130150180

Particles plusmneplusmn plusmneplusmnprotons

Beam energies extrapolated from secondary beam Electron beam obtained sending secondary beam on Pb target

e separation achieved using Cherenkov threshold detector filled with He gas Possible to distinguish from e for energies from 25 to 6 GeV

proton separation achieved using Cherenkov threshold detector with N2 gas Possible to distinguish from protons for energies from 80 to 30

GeV

httpwwwpprhulacuk~calicefabWWWrunSummaryhtm

Nigel Watson Birmingham

Angle and position scans

Proposed in TB plan Collected during TB

Angles 0 10 15 20 30 0 10 20 30

Position scans

Centre of ECAL

Centre of AHCAL

Inter-alveolae

Centre of ECAL

plusmn6cm from ECAL centre wafer

Bottom slab of ECAL (plusmn60plusmn3cm -3cm)

Centre of AHCAL

Centre of ECAL AHCAL plusmn6cm off beam-line

Inter-alveolae (plusmn3cm plusmn3cm)

bull bull bull bull bull -6

Nigel Watson Birmingham

Total events collected

Integrated Luminosity

Event Types

httpwwwpprhulacuk~calicefabWWWdataSummaryhtm

Nigel Watson Birmingham

Total events collected

Integrated Luminosity

Event Types

httpwwwpprhulacuk~calicefabWWWdataSummaryhtm

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

SummarySummary

CALICE is developing exceptionally performant calorimetry for ILC

Excellent opportunity to further ldquostress testrdquo hadronic models

First significant results from 2006 test beam runs at CERNDESY Summer 2007

Very large data sets from CERN in 2007 substantially more than planned for Analysis in progress

Careful realistic simulation of beamline and detectors essential before most useful comparisons with hadronic models Enhancements to modelling being made ~month

Plans for detailed comparisons results to come soon

Welcome suggestions for additional model tests from the respective authors

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Backup slideshellipBackup slideshellipBackup slideshellipBackup slideshellip

Selection of slides shown at G4 Review 15-2042007 by Erika Garutti (+Vasily Morgunov)

• CALICE Report
• ILC high performance calorimetry
• Implications eg for ECAL design
• CALICE from MC to reality
• Test beam prototypes
• The 2006 CERN installation
• Event display
• Slide 8
• Beamline instrumentation modelling
• 2006 Data
• ECAL hit energy 30 GeV e-
• ECAL linearityresolution
• ECAL longitudinal profile
• AHCAL
• AHCAL response to e-
• AHCAL linearity for e-
• AHCAL p data
• p linearity and resolution
• AHCAL energy profiles
• Outlook
• 2007 CERN Testbeam
• A difficult starthellip
• The setup two weeks laterhellip
• MWPCs and Veto
• Summary
• Backup slideshellip

G4 Workshop 13-Sep-2007Nigel Watson Birmingham

Backup slideshellipBackup slideshellipBackup slideshellipBackup slideshellip

Selection of slides shown at G4 Review 15-2042007 by Erika Garutti (+Vasily Morgunov)

• CALICE Report
• ILC high performance calorimetry
• Implications eg for ECAL design
• CALICE from MC to reality
• Test beam prototypes
• The 2006 CERN installation
• Event display
• Slide 8
• Beamline instrumentation modelling
• 2006 Data
• ECAL hit energy 30 GeV e-
• ECAL linearityresolution
• ECAL longitudinal profile
• AHCAL
• AHCAL response to e-
• AHCAL linearity for e-
• AHCAL p data
• p linearity and resolution
• AHCAL energy profiles
• Outlook
• 2007 CERN Testbeam
• A difficult starthellip
• The setup two weeks laterhellip
• MWPCs and Veto
• Summary
• Backup slideshellip