EMC – StatusR.Novotny

PANDA-Meeting @ GSI March 6, 2009

• crystal production, delivery and quality control• prototype experience• photo sensors (LAAPD, VPT)• development for PROTO 192, endcap• FE electronics• backward endcap

Daniel Bremer - II. Physikalisches Institut - JLU Giessen 2

status of production and deliveryType Required

Quantity(Without spares)

Lot B1

Lot B2

Lot B3

Lot B4

Lot B5

Lot B6

Lot B7 Lot B8

End Cap complete 4400 700

Barrel

1 R 640 21 0 113 695

1 L 640 354 0 157

9 R 320 0 330 325

9 L 320 0 0Total 4775 600 1020 700

Delivered x

Currently at …

Giessen CERN Giessen Uppsala BTCP

D.Bremer

specification limits

Longitudinal Transmission at 360 nm ≥ 35 %

at 420 nm ≥ 60 %

at 620 nm ≥ 70 %

Light Yield at T = 18°C ≥ 16 phe/MeV

Radiation hardness at 420 nm due to lateral 60Co irradiation.

Integral Dose 30 Gy

∆k ≤ 1 m-1

<∆k> ≤ 0,75 m-1

D.Bremer

transmission – lot B1 CERN/BTCP Measurements

60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 760

20

40

60

80

100

120

140

Num

ber o

f Cry

stal

s

Transmission in %

CERN Measurements BTCP Measurements

36 38 40 42 44 46 48 50 52 54 56 58 600

10

20

30

40

50

60

70

80

Num

ber

of C

ryst

als

Transmission in %

CERN Measurements BTCP Measurements

60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 760

20

40

60

80

100

120

140

160

180

620 nm420 nm360 nm

425

End

Cap

Cry

stal

s37

4 B

arre

l Cry

stal

sLot B

1

Distribution of Longitudinal Transmission at Certain Wavelength

Num

ber a

of C

ryst

als

Transmission in %

CERN Measurements BTCP Measurements

36 38 40 42 44 46 48 50 52 54 56 58 600

10

20

30

40

50

60

Num

ber o

f Cry

stal

s

Transmission in %

CERN Measurements BTCP Measurements

70 71 72 73 74 75 76 77 780

50

100

150

200

Num

ber o

f Cry

stal

s

Transmission in %

CERN Measurements BTCP Measurements

70 71 72 73 74 75 76 77 780

50

100

150

200

Num

ber o

f Cry

stal

sTransmission in %

CERN Measurements BTCP Measurements

D.Bremer

transmission – lot B1 control measurements @GI

36 38 40 42 44 46 48 50 52 54 56 58 600

5

10

15

20

25

30

35

40

Num

ber o

f Cry

stal

s

Transmission in %

Giessen Measurements

60 62 64 66 68 70 72 74 760

10

20

30

40

50

60

Num

ber o

f Cry

stal

s

Transmission in %

Giessen Measurements

70 71 72 73 74 75 76 77 78 79 800

10

20

30

40

50

60

620 nm420 nm360 nm

285

End

Cap

Cry

stal

s29

5 B

arre

l Cry

stal

sLot B

1

Longitudinal Transmission at Certain Wavelength

Lot B1 Barrel

Num

ber o

f Cry

stal

s

Transmission in %

Giessen Measurements

36 38 40 42 44 46 48 50 52 54 56 58 600

10

20

30

40

50

Num

ber o

f Cry

stal

s

Transmission in %

Giessen Measurements

60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 760

10

20

30

40

50

60

70

Num

ber o

f Cry

stal

sTransmission in %

Giessen Measurements

70 71 72 73 74 75 76 77 78 79 800

10

20

30

40

50

Num

ber o

f Cry

stal

s

Transmission in %

Giessen Measurements

D.Bremer

transmission – lot B1 comparison of mean values

350 400 450 500 550 600 65045

50

55

60

65

70

75

80

Mean Longitudinal Transmission at Certain Wavelength

Lot B1 Barrel

Giessen CERN BTCP

Mea

n Tr

ansm

issi

on %

Wavelength in nm350 400 450 500 550 600 650

45

50

55

60

65

70

75

80

Lot B1 EC Mean Longitudinal Transmissionat Certain Wavelength

Giessen CERN BTCP

Mea

n Tr

ansm

issi

on in

%

Wavelength in nm

D.Bremer

correlations - lot B1 T@420nmCERN and BTCP

Correlation CERN/BTCP T at 420 nm (Barrel)

64

65

66

67

68

69

70

71

72

73

74

64 66 68 70 72 74

BTCP T at 420 nm

CER

N T

at 4

20 n

m

420 nm (Barrel)

Correlation Coeff. = 0,605

Correlation CERN/BTCP T at 420 nm (EC)

64

65

66

67

68

69

70

71

72

73

74

64 66 68 70 72 74

T at 420 nm BTCP

T at

420

nm

CER

N

420 nm (EC)

Correllation Coeff. = -0,009

D.Bremer

correlations - lot B1 T@420nmGI vs CERN/BTCP

Correlation of Longitudinal Transmission between Giessen and CERN/BTCP Data at 420 nm (Barrel)

60

62

64

66

68

70

72

74

76

60 62 64 66 68 70 72 74 76

T in % Giessen

T in

% B

TCP/

CER

N

CERN DataBTCP Data

Corr. = 0,285

Corr. = 0,335

Correlation of Longitudinal Transmission between Giessen and CERN/BTCP Data at 420 nm (EC)

60

62

64

66

68

70

72

74

76

60 62 64 66 68 70 72 74 76

T in % Giessen

T in

% C

ERN

/BTC

P

CERN DataBTCP Data

Corr. = 0,607

Corr. = -0,014

D.Bremer

O.Missevitch

radiation induced ∆kbased on BTCP quality control

0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,30

100

200

300

400

500

600

700

800

Radiation induced ∆ k for the Lots B1 to B5 (End Cap only)

Num

ber o

f Cry

stal

s

∆ k in m-1

D.Bremer

O.Missevitch

O.Missevitch

0,000,100,200,30

0,400,500,600,70

0,800,901,001,10

1,201,301,40

1,50

300,00 400,00 500,00 600,00 700,00 800,00 900,00

dk, m-1

wavelength, nm

201-EC202-EC204-EC205-EC206-EC208-EC209-EC210-EC211-EC213-EC

spectra of the radiation induced absorption coefficient dk

specification limit

time delay of measurements after irradiation ~ 1-5 minutes

V.Dormenev

0,000,100,200,300,40

0,500,600,700,800,90

1,001,101,201,301,40

1,50

300 400 500 600 700 800 900

dk, m-1

wavelength, nm

201-EC202-EC204-EC205-EC206-EC208-EC209-EC210-EC211-EC213-EC

specification limit

spectra of the radiation induced absorption coefficient dk

time delay of measurements after irradiation ~ 1 day

V.Dormenev

y = 0,60xR2 = 0,49

0

0,2

0,4

0,6

0,8

1

1,2

1,4

0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40

dk at 420 nm (Giessen), m-1

dk a

t 420

nm

(BT

CP)

, m-1

dkLinear (dk)

corelation of radiation absorption: BTCP vs GI

correlation coef.=0.72average dk (Giessen)=0.90 m-1average dk (BTCP)=0.54 m-1

time delay of measurements after irradiation ~ 1-5 minutes

V.Dormenev

y = 1,01xR2 = 0,51

0

0,2

0,4

0,6

0,8

1

1,2

1,4

0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40

dk at 420 nm (Giessen), m -1

dk a

t 420

nm

(BT

CP)

, m-1

dkLinear (dk)

correlation coef.=0.72average dk (Giessen)=0.54 m-1average dk (BTCP)=0.54 m-1

corelation of radiation absorption: BTCP vs GItime delay of measurements after irradiation ~ 1 day

V.Dormenev

recovery of PWO radiation absorption @ 420 nm

0,7

0,72

0,74

0,76

0,78

0,8

0,82

0,84

0,86

0,88

0,9

0 10 20 30 40 50 60 70 80 90 100 110 120

dk, m-1

time, min

Recovery of dk at 420 nm of PWO #54

2-exp fit:A1=0.05 m-1

t1=6.3 minA2=0.81 m-1

t2=4012 min

V.Dormenev

experimental setup

PWO crystal PM tube

PM tube

BaF crystal

22Na

d

Pre-Amp Amp MCA

Gate

linearity of crystal response for all barrel shapes

M.Marteinsdottir

Type 1 Type 2 Type 10 Type 11

M.Marteinsdottir

non-linearity of light collection

Type Volume [cm3] θB [°] θA [°] θC [°] Mean Value of Nonuniformity

phe/MeV Rel. Std %

1 126.86 2.1 2.2 2.2 35.4 5.62 126.56 2.1 2.1 2.2 34.5 7.83 125.79 2.1 2.1 2.1 38.6 5.44 120.85 1.7 1.9 2.0 26.8 6.15 119.69 1.7 1.8 1.8 31.9 6.86 118.35 1.7 1.6 1.6 31.3 5.57 112.90 1.2 1.4 1.5 27.6 4.98 111.75 1.2 1.3 1.3 31.9 3.99 110.52 1.2 1.1 1.2 31.5 2.010 107.01 0.9 1.0 1.0 30.5 2.611 106.25 0.9 0.9 0.9 25.3 2.3

Front end cap crystal 0.5 21.5 0.9

summary

M.Marteinsdottir

first in-beam test of PROTO60 @ MAMI

Eγ: 124MeV ….. 1.44GeV

M.Moritz

E. Guliyev

response to cosmics recorded with SADC

E. Guliyev

time resolution: cosmics

E. Guliyev

time resolution: high energy photons

PROTO60

• response function and resolution• position reconstruction• simulation of conversion (2mm Pb)• read-out with: peak sensing ADC / SADC

M.Moritz

PROTO60: energy resolution

readout with SADC, 16 channels

E. Guliyev

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

250 350 450 550 650 750

Wavelength [nm]

QE

[%]

PIN diodeLAAPD

PWO QE @ λ = 420 nm:≈ 72%

One APD ofquadratic shape,’Normal’ Ct:

QE @ λ = 420 nm:≈ 83%

QE @ λ = 420 nm:≈ 80%

‘Low’ Ct PIN

‘Normal’ Ct PIN

5 APDs ofrectangularshape

Photo sensors: LAAPD

A.Wilms

Photo sensors: VPT

S.Bolte

Photo sensors: VPT

S.Bolte

integration DIRC and FwEndcapEMC

light Al frame (540 kg)supported by solenoid,space for digitizing electronics: 16 times 0.4 m2 = in total 6.5 m2

inserts with alignment crosses foreseen in central hole

final decision needed:rectangular / elliptic hole?

H. Löhner

identification of position gauges

21

3

45

6

78

reading accuracy0.005 mm

H. Löhner

alveole # NB003 sag progression after loading “crystals” from the back side

Proto NB003, back loaded and glued

0

0,01

0,020,03

0,04

0,05

0,06

21-1

-200

9

23-1

-200

9

25-1

-200

9

27-1

-200

9

29-1

-200

9

31-1

-200

9

2-2-

2009

4-2-

2009

6-2-

2009

8-2-

2009

10-2

-200

9

12-2

-200

9

14-2

-200

9

16-2

-200

9

18-2

-200

9

Da te

Disp

lace

men

t (m

m)

Left dial guageMiddle dial guageRight dial guage

displacement < 0.05 mm during 30 daysH. Löhner

development for FW-Endcap and PROTO 192• temperature and humidity sensors

F. Feldbauer• Fiber Bragg Grating Sensors

H. Löhner

• humidity measurement: THMP F. Feldbauer

• integration of ADCcooling !

J. Becker

• ADC development P.Marciniewski

• 12bit …. 15bit• sampling rate > 50MHz energy/time resolution • power consumption• radiation hardness

ADC, FPGA, …

barrel: FE-electronics , inserts , cables

progress but: many open questions:• selection of components• layout of PC-boards• arrangement• flexibility• energy/time resolution• link to other detectors ?

M.Kavatsyuk

EVO-meetings

Backward Endcap: simulations and many open questions

A.Biegun

Fiber Bragg Gratings (FBG)

C. Doyle, Smart Fibres Ltd. 2003

maximum reflectivity occurs at Bragg wavelength λB with λB = 2 neff Λ

where neff = effective refractive index of mode of propagation in fiber,and Λ = FBG period

H. Löhner

(WDM)

H. Löhner

H. Löhner

H. Löhner