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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