PETに使える3Dガンマ検出器

液キセノンTPC

田内利明 (KEK)

アクティブ媒質TPC開発座談会、2017年4月22日

TXePETイメージ（液体キセノン検出装置のみ）

XEMIS2 : Small animal PET, which will be tested for 2017 -2020 in CHU-Nantes, France, Subatech group

断層撮影から３次元立体撮影へ

Lt1

Lt2

Lt3

Lt4

Liquid level gauge (15cm)

Lt5ch1

γ-source 137Cs,7.34KBq

α-source:α2 241Am,200Bq

Front-end electronics

α-source:α1 241Am,200Bq

Pt100

2012.7.4

LXeTPC prototype -1

5cm drift, mesh grid with1mm gap

4x4 pads readout, 7.5x7.5mm/pad

PMT1 (up) : R5900; DY1 - 12 20.7uA at +900V(max) Q.E.=20%@175nm

(2003.11.28)

PMT2 (down) : R7600; DY1 - 10 23.9uA at +900V(max) Q.E.=30%@175nm

(2009.06.15)

Ctest = 2pF

Pre-amp (A250) NIM 16ch post amp CAEN/N568B 16ch ( shaping amplifier)

DAQ : CAMAC FADC 500MHz 2ch/module 8bits/3.3V, 8k words/ch FADC 20MHz 16ch/4modules 8bits/2V, 1k words/ch ADC 2249W 12ch, 11bit integrated ADC 0.25pC/count, 800nsec gate

Trigger: pmt1xpmt2, test pulse, cosmic HV power supplies - positive (brown) : PMTs - negative cathode, PMT3(cosmic)

2012.8.28

Event classifications by scintillation lights

γ

α2 α1

scintillation (PMT1)

scintillatio

n (PMT2

)

scintillation (PMT1)

scintillation (PMT2)

scintillation (PMT1)

scintillatio

n (PMT2

)

cosmic ray

γ

cosmic rayscintillatio

n (PMT2

)

scintillatio

n (PMT2

)

scintillation (PMT1)

scintillation (PMT1) scintillation (PMT2)

α2 α1

scintillation (PMT1)2012.12.10-2013.1.19

2012.8.28

Raw signal charges

2012.9.18

α1 α2 α1 α2

time/50ns time/50ns

time/50ns time/50ns

no. o

f events

no. o

f events

no. o

f events

no. o

f events

PAD6 PAD7

PAD10 PAD11

Charges/pad (peak of D-Gaussian fit) of α1,α2 and γ, 2012.12.20-12.31 (8 days)

α1

α2

γ

cosmic

Gaussian peak/maximum PH

662keV (?)

Gamma’s ( subtracted peaks of α1 and α2 )

2012.12.10-2013.1.19 2012.12.10-2013.1.19

Averag

e/RM

S pu

lse heigh

t

note : the anode plane at 125

4cm

137Cs

241Am (59.4keV)

electron lifetime : 77±7μsattenuation length : 12±1cm

impurity :6ppb

grid (125)

grid (125)

α1 α2

Pulse

heigh

t (pa

d by

D-G

auss fit)

drift time /50ns drift time /50ns

0.000#

0.100#

0.200#

0.300#

0.400#

0.500#

0.600#

0.700#

0.800#

0.900#

1.000#

0# 50# 100# 150# 200# 250# 300# 350# 400#

Q.gamma#

ph.alpha#

Gas#Xe#

Gas#Xe#scaled#

anode HV (V)

Tran

sparen

cy or e

fficien

cy o

f the

grid

1 2 3 4 5 6 7 in E2/E1

operation

Grid Transparency

0.00#

0.50#

1.00#

1.50#

2.00#

2.50#

0.0# 0.2# 0.4# 0.6# 0.8# 1.0# 1.2# 1.4# 1.6#

Drift velocity in Liquid Xe

Electric field kV/cm

drift velocity mm/μs

Xe gas, 1.4atm

Liquid Xe▲

▲●

●

●●

●

● : T.Ogar, NIMA695,125(2012)

Xe Liquid at 165K

TPC cathode =-2.5kV, anode=+255V

2011.10.6.1832PMT1=PMT2=+720V

TPC cathode =0V, anode=0V

scintillation PSD (PMT1)

scintillatio

n PS

D (P

MT2

)

scintillation PSD (PMT1)

scintillation PSD (PMT2)

α

γ

scintillation PSD (PMT1)

scintillatio

n PS

D (P

MT2

)

scintillation PSD (PMT1)

scintillation PSD (PMT2)

α

γ

Pulse Shape Discrimination (PSD)

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

PSD1 vs PSD2psd1_psd2

Entries 51000Mean x 0.234Mean y 0.3833RMS x 0.1153RMS y 0.1003

PSD1 vs PSD2

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10

1000

2000

3000

4000

5000

PSD1 vs PSD2psd1_psd2_pyEntries 51000Mean 0.3822RMS 0.1006

PSD1 vs PSD2

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10

500

1000

1500

2000

2500

PSD1 vs PSD2psd1_psd2_pxEntries 51000Mean 0.2339RMS 0.1154

PSD1 vs PSD2

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10

0.2

0.4

0.6

0.8

1

PSD1 vs PSD2psd1_psd2_pfx_px

Entries 50039Mean 0.4684RMS 0.243

PSD1 vs PSD2

TPC cathode =-2.5kV, anode=+255V

scintillation PSD (PMT1)

scintillatio

n PS

D (PMT2

)

scintillation PSD (PMT1)

scintillation PSD (PMT2)

α

γ

16:04 16 Oct. ~ 13:49 19 Dec. 2016

0.00#

10.00#

20.00#

30.00#

40.00#

50.00#

60.00#

70.00#

80.00#

90.00#

100.00#

12.08.20# 12.09.09# 12.09.29# 12.10.19# 12.11.08# 12.11.28# 12.12.18# 13.01.07#

2012.8.23-2013.1.19

Electron life time and impurity in Liquid XeElectron

life time in

μsec

5

10

20

Impurity in ppb

E1=0.5KV/cm (drift) 30

Summary : LXeTPC prototype -11. Preamp : Al 16 ch OK ( 2012 July - 2013 May ) 2. Purification : gas circulation at 1.3ℓ/min for about three months 　　8/23-9/9 (17days）smooth increase of charge signals followed with saturation 10/-12/10 (71days) increase with CH warm-up/day followed with saturation 3. Impurity estimated by γ spectrum of 137Cs（662keV, Compton edge) 　　　after 2nd saturation：life time=77±7μs, attenuation L.=12±1cm, 6ppb 4. Grid transparency as a function of E2 good agreement with the expectation from the micro-megas results 　　 transparency=0.76 at E2/E1=5.2, mesh aperture=0.57 5. Drift velocity as a function of E1 　 1.6mm/μsec at E1=0.5kV/cm (1.3mm/μsec in Xe gas at 1.4atm)　　　 6. Preparation of TPCFE09 (ASIC) in the chamber 168mV/fC, -7fC<Qin<+7fC at room temperature by simulation and test bunch 0.2V/fC expected at 165K ( peaking time = 1μsec)

ASIC・TPCFE09

Parameters TPCFE09(TPCFE1x)

dynamic range -75fC~+25fC -500fC ~ -5fC

gain 2mV/fC 10mV/fC

gain tolerance ~1%

ENC 400+25/pF@0.5us

cross talk ~1%

peaking time 0.5, 1 and 2 us

power dissipation <10mW/ch

Temperature range -110 ~ + 25℃

# of channels 16chADC none (10bit/10MHz)

TPCFE09 : 2nd version of FEXE09

UMC 0.25um process

together with the neutron groupYuta Takagi (Yokohama N. univ.) , Takatoshi Higashi (Saga univ.), Takahiro Fusayasu(NIAS) , Hirokazu Ikeda(JAXA) , Manabu Tanaka(KEK)Open-It (Open source consortium for detector instrumentation) collaboration

Designed by Open-IT ;

Schedule 1. Circuit design was completed, Mar.2010 2. Simulation was completed 3. Layout design was passed to the company on 24 Nov.2010 4. Tape out was(?) submitted by end of January 2011 5. Delivery in Summer 2011 6. Test in Autumn 2011

ASIC gain

ASIC noise

Y. Takagi, Mater Thesis, Yokohama National University, 2011

Gain in [ mV/

fC ]

ENC [ N

umbe

r of e

lectrons)

Mother board of TPCFE (16ch), version -1, for test, Jan-Mar 2013 studied by Yuya Iwazaki, Yokohama National University

GN-1294-1(FR4), based on Takagi’s M thesis

DC offset tuning circuit

DC coupling

Output

Input

test pulse

output

input

test

protected with diodes

changed to 100kΩ for prototype-2

changed to AC coupling for prototype-2

x 10

∴ x 20

R1=R2=5.1kΩ : R25=R26=100kΩ Gain=19.6 GN-1294-2(LTCC)

DCリターン

AC結合

168mV/fC at room temperature

-7fC to + 7fC

~200mV/fC at 165K

GN-1294-2(LTCC), AC-coupling

Input charge (fC)

Outpu

t voltage

(mV)

Dynamic range (linearity) of Ch1 (5.1kΩ, 102kΩ）

Hear Exchange

Second Cooler

Liquid xenon Cryostat

First cooler (pulse tube)

TMP

現在のセットアップ ( 2015 ~ )

予冷システム（Heat Exchanger +Second Cooler) を構築し、Xe純化のためのガス流量の大幅な増大を期待している。

これまで、最大で1.5ℓ/分であったが、10ℓ/分程度まで安定な自動運転が可能なことが得られた。

~ 4.5ℓ/分 で定常運転。

KEK 01 / 12 / 2015

SUBATECH KEK

Gas flow (l/min) 31.3 4.5 7.5 11.0

T inside cryo T2 (ºC) -100.7 -106.9 -106.5 -106.3

PT1 (ºC) -106 -107.9 -107.5 -107.3

PT2 (ºC) 18.1 -58.5 -50.3 -44.1

PT3 (ºC) 24.5 -1.5 6.7 11.7

PT5 (ºC) -104.4 -104.7 -104.3 -104.0

T1 (ºC) -104.4 -98.6 -98.5 -98.5

PTR (164 K@24 W)

Gas flow (l/min) 4.5 7.5 11.0

Cold Head T (ºC) 164 164 164

PTR Power (W) 29 29 29

Heater (W) 11 8 6.5

Cooling Power (W) 18 21 22,5

@ L,tb-Vrr. lt:*o.flbc-o8 Stt =144n OCC̀

WO _2D P

1C W

ater( B

ttr\ o'-.o1.T

,

6+ ..

b T

S

IT

4 C

. O7 3 H

1

~~

l

ic

`

`

c

6t %e

A V 2 % %`%

(b H

P7 , C2

12)4 P `

D Hcatcr3 b

12 .a% )% ,A 7

% %

P : )0

g o9 b T

87

: :

(4 r

By courtesy of Kasami-san

KEK Cryogenics Set-up — Data (18 - 26/11/2015)

PTR

Coo

ling

Pow

er (W

)

0

5

10

15

20

25

Gas Flow (l/min)

0 1,5 3 4,5 6 7,5 9 10,5 12

*Average values during stability *PTR power from KEK measurements

35 by Sara Diglio and Lucia Gallego (Subatech)

∆P (M

Pa)

0,025

0,03

0,035

0,04

Gas Flow (l/min)

0 2 4 6 8 10 12

∆P (MPa)

@ L,tb-Vrr. lt:*o.flbc-o8 Stt =144n OCC̀

WO _2D P

1C W

ater( B

ttr\ o'-.o1.T

,

6+ ..

b T

S

IT

4 C

. O7 3 H

1

~~

l

ic

`

`

c

6t %e

A V 2 % %`%

(b H

P7 , C2

12)4 P `

D Hcatcr3 b

12 .a% )% ,A 7

% %

P : )0

g o9 b T

87

: :

(4 r

SUBATECH KEK

Gas flow (l/min) 31.3 4.5 7.5 11.0 4.5

PT2 (ºC) 18.1 -58.5 -50.3 -44.1 -58.5

PT3 (ºC) 24.5 -1.5 6.7 11.7 -2.1

Efficiency (%) 99.9 86.1 86.1 86.5 86.3

Cp (J/g/K) 0.34

Lp (J/g) 96.26

KEK 01 / 12 / 2015

Heat Exchanger Efficiency

By courtesy of Kasami-san

∆P

Effic

ienc

y (%

)

70

75

80

85

90

95

100

Gas Flow (l/min)0 2 4 6 8 10 12

38

Figure 1: (left) 3D drawing of the PTR, heat exchanger and the connection with cryostat. (right) Schematic of XEMIS cryogenic system.

PERFORMANCE OF HEAT EXCHANGER To estimate the performance of the present heat exchanger as a function of recirculation rate, it is necessary to measure the pressure and temperature at inlet and outlet. Concerning the pressure drop, the one in the shell side is measured from the difference of pressure at inlet and at cryostat (outlet). For the tube side, because the valve between the outlet and the pressure sensor is used to adjust the flow, the pressure at the outlet can only be measured directly at highest flow (~33 NL/min, the valve is fully opened). In order to estimate the pressure at outlet, we assume that the pressure drop is proportional to the xenon mass inside the heat exchanger, which can be obtained from the LXe level measurement. The result of pressure drop is shown in Figure 2 (left). The pressure drop in the tube side is much bigger due to the vertical distance between cryostat and heat exchanger (~50 cm). The measurement of temperature difference is shown in Figure 2 (right). The temperature at cold end is quite stable (tube side: ~-103 ºC, shell side: ~ -101 ºC), which indicates that there is heat exchange between LXe and GXe inside heat exchanger even at small flow (~2.5 NL/min). Compare with the assumption of pressure difference between tube/shell side and temperature difference at the cold end for the design of heat exchanger (0.5 bar, 6 K), the observed values are much smaller (~0.15 bar, 2 K). The efficiency of heat exchanger (ε) as a function of recirculation rate can be estimated as:

QFTC warmp u'u

� 1H (1)

Where Q (W) is the thermal duty to recondense a given gaseous xenon flow F (g/s)*. Cp (J/g/K) and ΔTwarm (K) are the specific heat of xenon and the temperature difference at warm end†, respectively. The measurement of cooling power is shown in Figure 3 (left), which shows that the change of cooling power is nearly unobservable at high flow. The efficiency estimated by Equation 1 is shown in Figure 3 (right). It is 99% even at high flow, which is even better than its design value (95%) or the performance of the plate heat exchanger described in [6]. CONCLUSION The measurement indicates that the performance of coaxial heat exchanger is better than its designed value. Based on its good performance and high strength, it may not only be a good solution for ReStoX, but also be a good device for all LXe experiments like DARWIN [5] project.

* Is converted from the flow (NL/min) measured by flow meter † The outlet of tube side and the inlet of shell side, which are close to room temperature

(g/s)(W)

99.0

�Twarm = PT3� PT2 by Sara Diglio and Lucia Gallego (Subatech)Q(W ) = (Lp + Cp ⇥�T )⇥ F

Frontend ElectronicsOptimized setup, 22 October, 2015

TPCFE09 (ASIC 16ch)±1.25V PS

Buffer amplifiers±2.5V PS

4x4 anode pads+300V anode HV grid (GND, mesh 1mm gap) Test pulse

TPC (5cm drift)

Twist pair cables

LXeTPC prototype -2

TPCFE09

TPCFE09 :

BUFFER AMP

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

SW_500N

SE_1UG_PRE

MO_IN

CLKIN

TPC-FE 16CH

入力コネクタCN1－TPCFE間は最短距離配線

CN1（内層に配線し、GND面ではさむ）

U9(TPCFE)は基板裏面に配置

TESTIN

Thru-hole (D=1.2mm) Murata_GRM43DR72J104KW01LSEI HVCB2010FKC1M00 TDK_C4532X7R2J104K

(+400V)

1M Ohm 1W 1% 50ppmMaximum Working Voltage=1700V

+ HV

(from Power Supply) (to Detector)

ASIC(TPCFE09)BOARD2/2ANODE(PAD)BOARD1/2

16CHSINGLEOUTPUTKAPTONCABLE + GROUND2PIN

HV,TESTSIGNAL,GROUNDINDIPENDENTCABLE

S2_

SE

L

S1_

SE

L

AM

P_S

EL

VL1

VL2

VL3

VL4

VL5

VL6

VL7

VL8

SD

OU

TC

LKO

UT

XIN[15:0]

AOUTP6AOUTM7

AOUTP4

AOUTM[15:0]

AOUTP7

AOUTP[15:0]

AOUTP11AOUTM12

AOUTP12

AOUTM5

AOUTM13

AOUTP3

AOUTP13AOUTM14

AOUTM3

AOUTP14

AOUTP5

AOUTM4

AOUTM6

AOUTP8AOUTM8

AOUTP9AOUTM9

AOUTP10AOUTM10

AOUTM11

AOUTP15AOUTM15

AOUTM0AOUTP0

AOUTM1AOUTP1

AOUTM2AOUTP2

XIN0

XIN1

XIN2

XIN3

XIN4

XIN5

XIN6

XIN7

XIN8

XIN9

XIN10

XIN11

XIN12

XIN13

XIN14

XIN15

XIN2

XIN3

XIN4

XIN5

XIN6

XIN7

XIN8

XIN9

XIN10

XIN11

XIN12

XIN13

XIN14

XIN15

XIN0

XIN1

AOUTM[15:0]

AOUTP[15:0]

XIN[15:0]

+1V25(TPC)

-1V25(TPC)

-1V25(TPC)

+1V25(TPC)D

-1V25(TPC)

+1V25(TPC)

+1V25(TPC)D

-1V25(TPC)D-1V25(TPC)D

-1V25(TPC)

+1V25(TPC)

+1V25(TPC)

-1V25(TPC)D

+1V25(TPC)D

-1V25(TPC)D

+1V25(TPC)D

-1V25(TPC)D

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

TPC-FE

A2

1 1Saturday, February 15, 2014

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

TPC-FE

A2

1 1Saturday, February 15, 2014

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

TPC-FE

A2

1 1Saturday, February 15, 2014

C118

1P/1608

1 2

T12

TESTPIN

1

JT14 PIN0.81

C142

501R15W102KV4E/2125

1 2

R166

HMC0805JT500M/2125

R155

HMC0805JT500M/2125

JT32PIN0.8 1

R169

HMC0805JT500M/2125

R145 0/1608

T5

TESTPIN

1

C93

0.1U/1608

1

2

JT26PIN0.8 1

C92

0.1U/1608

1

2

C164

10U/16081

2

R136 0/1608

JT10 PIN0.81

T9

TESTPIN

1

C136

501R15W102KV4E/2125

1 2

R165

HMC0805JT500M/2125

C110

1P/1608

1 2

JT20PIN0.8 1

JT19PIN0.8 1R161

HMC0805JT500M/2125

R150

2K/1608

C119

1P/1608

1 2

C103AMK325ABJ337MM

1

2

R170

HMC0805JT500M/2125

C108

1P/1608

1 2

JT33PIN0.8 1

JT6 PIN0.81

C870.1U/630V/X7R/4532

R141 0/1608

T13

TESTPIN

1

T6

TESTPIN

1

T2(HOLE_1.2)

1

C130

501R15W102KV4E/2125

1 2

JT27PIN0.8 1

R149510/1608

C116

1P/1608

1 2

JT15 PIN0.81

JT2 PIN0.81

C122

0.1U/1608

1 2

JP1

HEADER 2X2

1234

C111

1P/1608

1 2

R138 0/1608

T15

TESTPIN

1

JT21PIN0.8 1

R164

HMC0805JT500M/2125

T17

TESTPIN

1

R144 0/1608

JT11 PIN0.81

C109

1P/1608

1 2

JT34PIN0.8 1

JT17 PIN0.81

C105AMK325ABJ337MM

1

2

C135

501R15W102KV4E/2125

1 2

T14

TESTPIN

1

C132

501R15W102KV4E/2125

1 2

JT28PIN0.8 1

C117

1P/1608

1 2

R158

HMC0805JT500M/2125

JT7 PIN0.81

C97

0.1U/1608

1

2

C127

501R15W102KV4E/2125

1 2

C99

10U/16081

2

T16

TESTPIN

1

C128

501R15W102KV4E/2125

1 2

JT22PIN0.8 1

R133 0/1608

R131 0/1608

JT16 PIN0.81

T1(HOLE_1.2)

1

JT18 PIN0.81R154

51/1608

JT3 PIN0.81

JT35PIN0.8 1

C100

10U/1608

1

2

R163

HMC0805JT500M/2125

R135 0/1608

C95

0.1U/1608

1

2

R160

HMC0805JT500M/2125

VR110K/1608

R140 0/1608

JT29PIN0.8 1

C114

1P/1608

1 2

JT12 PIN0.81

C90

0.1U/16081

2R1471K/1608

R156

HMC0805JT500M/2125

JT23PIN0.8 1

C98

10U/16081

2

R143 0/1608

JT8 PIN0.81

JT36PIN0.8 1

C134

501R15W102KV4E/2125

1 2

TPC-FE

U9

XIN<0>97

GND98

XIN<1>99

GND100

XIN<2>101

GND102

XIN<3>103

GND104

XIN<4>105

GND106

XIN<5>107

GND108

XIN<6>109

GND110

XIN<7>111

GND112

GND113

XIN<8>114

GND115

XIN<9>116

GND117

XIN<10>118

GND119

XIN<11>120

GND121

XIN<12>122

GND123

XIN<13>124

GND125

XIN<14>126

GND127

XIN<15>128

AOUTP1533AOUTM1534AOUTP1435AOUTM1436AOUTP1337AOUTM1338AOUTP1239AOUTM1240AOUTP1141AOUTM1142AOUTP1043AOUTM1044AOUTP945AOUTM946AOUTP847AOUTM848AOUTP749AOUTM750AOUTP651AOUTM652AOUTP553AOUTM554AOUTP455AOUTM456AOUTP357AOUTM358AOUTP259AOUTM260AOUTP161AOUTM162AOUTP063AOUTM064

VS

SD

65V

SS

D66

GN

DD

67G

ND

D68

VD

DD

69V

DD

D70

GN

DD

71C

LKIN

72M

O_I

N73

GN

DD

74G

ND

D76

SW

_500

N77

SE

_1U

78G

_PR

E79

GN

DD

80

GN

D83

S2_

SE

L_O

UT

84G

ND

85S

1_S

EL_

OU

T86

GN

D87

AM

P_S

EL_

OU

T88

GN

D89

VD

D91

VD

D92

GN

D93

GN

D94

VS

S95

VS

S96

VS

S1

VS

S2

GN

D3

GN

D4

VD

D5

VD

D6

GN

D7

IBIA

S8

GN

D9

GN

D12

VL1

13

VH

214

VH

315

VL4

16

VH

517

VH

618

VH

719

VH

820

VR

EF

21

GN

D22

GN

DD

23

SD

OU

T24

CLK

OU

T25

GN

DD

26

VD

DD

27

VD

DD

28

GN

DD

29

GN

DD

30

VS

SD

31

VS

SD

32

NC

10

NC

11

NC

75

NC

81N

C82

NC

90

R137 0/1608

C104AMK325ABJ337MM

1

2

T11

TESTPIN

1

C120

1P/1608

1 2

R187

(0/1608)

C131

501R15W102KV4E/2125

1 2

CN37

JUMP COAX1

2

JT30PIN0.8 1

C101

10U/16081

2

C115

1P/1608

1 2

T10

TESTPIN

1

JT4 PIN0.81

C102

AMK325ABJ337MM

1

2

JT24PIN0.8 1

C91

0.1U/16081

2

C139

501R15W102KV4E/2125

1 2 JT13 PIN0.81

C112

1P/1608

1 2

C140

501R15W102KV4E/2125

1 2

R162

HMC0805JT500M/2125

R146 0/1608

T7

TESTPIN

1

C129

501R15W102KV4E/2125

1 2

C106

1P/1608

1 2

R153 2K/1608

JT1 PIN0.81

C121

1P/1608

1 2

T4(HOLE_1.2)

1

C138

501R15W102KV4E/2125

1 2

R159

HMC0805JT500M/2125

R129

1M/500V/5125

JT31PIN0.8 1

R1483.9K/1608

C141

501R15W102KV4E/2125

1 2

JT9 PIN0.81

C96

0.1U/1608

1

2

R142 0/1608

R139 0/1608

C107

1P/1608

1 2

R1512K/1608

C165

10U/16081

2

JT25PIN0.8 1

C94

0.1U/16081

2

R152 2K/1608

CN41(2PIN JUMPER)

S1

G2

C137

501R15W102KV4E/2125

1 2

R132 0/1608

C113

1P/1608

1 2

R168

HMC0805JT500M/2125

JT5 PIN0.81

T8

TESTPIN

1

R167

HMC0805JT500M/2125

R157

HMC0805JT500M/2125

C133

501R15W102KV4E/2125

1 2

R134 0/1608

C88

0.1U/1608

1 2

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

TPC-FE 16CH

(LEMO_STRAIGHT)

POWER_INPUT

GND(0V)

VDD(+1.25V)

VSS(-1.25V)

SIG OUTPUT

BUFFERBOARD1/2

16CHCOAXIALOUTPUTKAPTONCABLE

GND(0V)

+POWER+/-2PINGROUND2PIN

OUT[15:0]

OUT0

OUT1

OUT2

OUT3

OUT4

OUT6

OUT7

OUT8

OUT9

OUT10

OUT12

OUT13

OUT14

OUT15

OUT5

OUT11

OUT[15:0]

+1V25

-1V25

+1V25S

-1V25S

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

OUTPUT CONNECTOR

A4

1 1Saturday, February 15, 2014

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

OUTPUT CONNECTOR

A4

1 1Saturday, February 15, 2014

Title

Size Document Number Rev

Date: Sheet of

<Doc> <RevCode>

OUTPUT CONNECTOR

A4

1 1Saturday, February 15, 2014

R171

51/1608

R179

51/1608

GPIN3(JP-4)

1 2

R178

51/1608

CN13(2PIN JUMPER)

1

2

CN9(2PIN JUMPER)

1

2

CN10(2PIN JUMPER)

1

2

CN39

(PPIN)

1

R183

51/1608

CN18(2PIN JUMPER)

1

2

CN6(2PIN JUMPER)

1

2

CN14(2PIN JUMPER)

1

2

GPIN1(JP-4)

1 2

R182

51/1608

R173

51/1608

R172

51/1608

GPIN4(JP-4)

1 2

R186

51/1608

R177

51/1608

CN12(2PIN JUMPER)

1

2

CN20(2PIN JUMPER)

1

2

CN40

(PPIN)

1

R176

51/1608

C125NFM31PC276B0J3

2

1 3

CN17(2PIN JUMPER)

1

2

C124AMK325ABJ337MM

1

2

R181

51/1608

CN44

(PPIN)

1

R180

51/1608

CN5(2PIN JUMPER)

1

2

C126AMK325ABJ337MM

1

2

R185

51/1608

CN7(2PIN JUMPER)

1

2

CN19(2PIN JUMPER)

1

2

R184

51/1608

CN11(2PIN JUMPER)

1

2

C123NFM31PC276B0J3

2

1 3

CN8(2PIN JUMPER)

1

2

CN16(2PIN JUMPER)

1

2

CN15(2PIN JUMPER)

1

2

GPIN2(JP-4)

1 2

R174

51/1608

CN38

(PPIN)

1

R175

51/1608

BUFFER AMP

ASIC AC coupling

x 20

Ctest =1pF

Test pulse : the input charge with 50Hz, 0.025V w/ 31dB, 0.7mV, Ctest=1pF, i.e. 0.7fC; FETPC09+buffer amp. gain / 2 = ~ 200mV/fC with each 50Ω in series in the output ∴ The output voltage at the buffer amp = ~140mV ∴ FADC20MHz : 140/7.8=18 counts expected

2016.11.7

Performances of test pulse run

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

1600

gamma-ch4gamma-ch4

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch8gamma-ch8

200 400 600 800 1000

0

200

400

600

800

1000

gamma-ch12gamma-ch12

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch16gamma-ch16

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

1600

gamma-ch3gamma-ch3

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

1600

alpha-ch7alpha-ch7

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch11gamma-ch11

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch15gamma-ch15

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

1600

gamma-ch2gamma-ch2

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

alpha-ch6alpha-ch6

200 400 600 800 1000

0

200

400

600

800

1000

1200

alpha-ch11alpha-ch11

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch14gamma-ch14

200 400 600 800 1000

0

200

400

600

800

1000

gamma-ch1gamma-ch1

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

1600

gamma-ch5gamma-ch5

200 400 600 800 1000

0

200

400

600

800

1000

1200

gamma-ch9gamma-ch9

200 400 600 800 1000

0

200

400

600

800

1000

1200

1400

gamma-ch13gamma-ch13

results of the test pulse runs for 100 triggers

pulse

heigh

t

time, 50ns/ch

0 20 40 60 80 1000

0.2

0.4

0.6

0.8

1

Peak:alpha1fadcpk_alpha1Entries 0Mean 0RMS 0

Peak:alpha1

0 20 40 60 80 1000

50

100

150

200

250

300

350

400

450

Peak:gammafadcpk_gammaEntries 1015Mean 13.89RMS 2.134

Peak:gamma

0 1 2 3 4 5 6 7 8 9 100

50

100

150

200

250

300

fit-peak/ph-peakfadcpk_phpeakEntries 1015Mean 0.9104RMS 0.116

fit-peak/ph-peak

0 20 40 60 80 1000

0.2

0.4

0.6

0.8

1

Peak:alpha2fadcpk_alpha2Entries 0Mean 0RMS 0

Peak:alpha2

0 50 100 150 200 2500

0.2

0.4

0.6

0.8

1

Peak:cosmicfadcpk_cosmicEntries 0Mean 0RMS 0

Peak:cosmic

200 400 600 800 1000

0

100

200

300

400

500

600

700

800

alpha-ch6alpha-ch6

200 400 600 800 10000

50

100

150

200

250

300

350

400

alpha-ch7alpha-ch7

200 400 600 800 1000

0

100

200

300

400

500

600

700

alpha-ch10alpha-ch10

200 400 600 800 1000

0

50

100

150

200

250

alpha-ch11alpha-ch11

2012.8.28

Raw signal charges

2016.11.08

α1 α2 α1 α2

time/50ns time/50ns

time/50ns time/50ns

no. o

f events

no. o

f events

no. o

f events

no. o

f events

PAD6 PAD7

PAD10 PAD11

0

500

1000

1500

2000

2500

2016/9/90:00 2016/9/290:00 2016/10/190:00 2016/11/80:00 2016/11/280:00 2016/12/180:00 2017/1/70:00

α2

γ

Prototype-2 : The signal growth in LXeTPC, Sep.-Dec.2016 4.5ℓ/min

0"

1000"

2000"

3000"

4000"

5000"

6000"

7000"

8000"

9000"

10000"

08.23" 09.12" 10.02" 10.22" 11.11" 12.01" 12.21" 01.10" 01.30" 02.19" 03.11" 03.31"

Prototype-1 : Growth of charge signals (α2)

date from Aug.23 to Mar.31, 2012

total cha

rge from

α2

12.10 - 1.19

10.1 - 1.20

CH-warm up/day

~1.3ℓ/min

Summary : LXeTPC prototype -2

1. New front-end electronics system, all 16 channels, is working since April 2016. TPCFE09 is in the Liquid Xe chamber, while the buffer amplifier is outside of the chamber. TPCFE09 AC-coupled to the buffer amplifier, the total gain is ~ 200mV/fC

2. Very stable operation of the cooling and the gas circulation/purification system the gas flow rate is ~ 4.5ℓ/min.

3. The signal growth is very slow compared to the prototype-1, although the gas flow rate incresed from 1.3ℓ/min to 4.5ℓ/min.

4. We will try to increase the purification by adding a getter.

5. The best solution must be to set all the frontend electronics and cables outside the chamber as much as possible.

( 2013 April - 2017 April )