View
158
Download
0
Category
Preview:
DESCRIPTION
PMT Testing. Results on Batch 6 on 278 pmts Selection based on 4 criteria Ecal/ Hcal selection based on 2 criteria Comparison of the two criteria. Results on Batch 06. 278 pmts presently measured - PowerPoint PPT Presentation
Citation preview
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 1
PMT Testing
Results on Batch 6 on 278 pmts Selection based on 4 criteria Ecal/ Hcal selection based on 2 criteria Comparison of the two criteria
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 2
Results on Batch 06 278 pmts presently measured Good correlation for both linearity and stability. The temperature stabilization of the LED
pulse is probably responsible for the improvement. 2 boxes appear to contains “ reprocessed pmts “ there stability is quite different Measurement on stability (and linearity) is more sensitive than the Hamamatsu ones.
This lead to reject around 10% of the pmts. One pmt was measured with a large dark current ( need to re-measurement)
PMT Measured 278Bad Linearity 0 0,0 %Bad Stability 27 9,7 %
Total 27 9,7 %
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 3
Batch 04 Inside Bench Temperature and Ref Amplitude
24
25
26
27
28
29
30
31
32
30/6/007/7/00
14/7/0021/7/00
28/7/00
Days
Tem
pera
ture
ins
ide
Ben
ch
0,800
0,850
0,900
0,950
1,000
1,050
Ref
eren
ce P
MT
Am
plit
ude
Temperature inside Test Bench Reference PMT Amplitude
Batch 06 Data for 278 PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 4
Results on 278 pmts of Batch 06
Compare Hamamatsu, LAL,IHEP Linearity at G=1.10**4
-4
-3
-2
-1
0
1
2
3
4
800 900 1000 1100Pmt
Dev
iati
on (
%)
G=1.10**4 LAL
G=1.10**4 HDS
G=1.10**4 IHEP
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 5
Results on 278 pmts of Batch 06
Linearity at 1.10**4
R2 = 0,80
-4
-3
-2
-1
0
1
2
3
4
-4 -2 0 2 4LAL
HA
MA
MA
TSU
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 6
Results on 278 pmts of Batch 06
Compare Hamamatsu, LAL,IHEP Linearity at G=1.10**4
-4
-3
-2
-1
0
1
2
3
4
0 10 20 30 40 50Pmt
Dev
iati
on (
%)
G=1.10**4 LAL
G=1.10**4 HDS
G=1.10**4 IHEP
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 7
Results on 278 pmts of Batch 06
Compare Hamamatsu,LAL,IHEP Amplitude Stability
-4
-3
-2
-1
0
1
2
3
4
800 900 1000 1100Pmt Number
Dev
iati
on (
%)
G=5.10**4 LAL
G=5.10**4 HDS
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 8
Results on 278 pmts of Batch 06
Amplitude Stability at 5.10**4
R2 = 0,71
-4
-3
-2
-1
0
1
2
3
4
-4 -2 0 2 4LAL
Ham
amat
su
Amplitude Stability at 5.10**4
R2 = 0,78
-4
-3
-2
-1
0
1
2
3
4
-4 -2 0 2 4LAL
Ham
amat
su
The 28 pmts measured in box 22 are very bad
278 pmts 250 pmts
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 9
Remarks
Need to make a selection “on the fly “ to equipped Hcal and Ecal modules Need to define criteria such that no pmts are left behind. All the pmts must be used
(except for the spare ones obviously). But all the pmts are within the specifications. Need to define common rules accepted by everybody to dispatch them between
ECAL/HCAL and inside ECAL or HCAL? Which criteria?
Ecal/ Hcal major requirements are perfectly compatible.• For Ecal Low quantum efficiency, highest voltage for a given gain.• For Hcal High quantum efficiency, lowest voltage for a given gain.
Should we include Linearity and Stability: not obvious Two examples:
A global one based on 4 probabilities call G0, Green, Linearity and Stability. A simpler one based on G0 and Grenn only to separate between Ecal and Hcal.
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 10
Selection based on 4 probabilities
Use Hamamatsu Datasheets for 4050 pmts presently delivered Method: build a probability to sort the best for inner Ecal.
G0: ABS((G0-G0min)/(G0
max-G0min)-1)
g: ABS((-min)/(max-min)-1)
Lin: ((ABS(Lin)/2)*(-1)) +1 @ 104
Stab: ((ABS(Stab)/2)*(-1)) +1 @5.104
Global probability = P(G0) x P(g) x P(Lin) x P(Stab) There is the possibility to introduce a weight between the 4 components
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 11
PMT Selection (2)
G0- HV
0
2
4
6
8
10
12
850 900 950 1000 1050 1100 1150 1200 1250
HV at 5.104
G0
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 12
Probability distribution Repartition between ECAL / HCAL
Ecal 6016 pmts 0,80385 Hcal 1468 pmts 0.19615
Repartition inside ECAL Inner 1536 0.20524
25.53% Middle 1792 0.23944 29.79% Outer 2688 0.35912 44.68%
Cut on probability 4 criteria: Hcal 0 to 0.09 Ecal Outer 0.09 to 0.185 Ecal Middle 0.185 to 0.280 Ecal Inner 0.280 to Max
Cut on probability 2 criteria:Between Ecal / Hcal Hcal 0 to 0.2153 Ecal 0.2153 to Max
2 criteria inside Ecal Ecal Outer 0. to 0.4229 Ecal Middle 0.4229 to 0.6154 Ecal Inner 0.6154 to Max
Probability Distribution
0
50
100
150
200
250
300
350
0,0 0,1 0,1 0,2 0,2 0,3 0,4 0,4 0,5 0,5 0,6 0,7Probability
Num
ber
of
pmts
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 13
Cumulative Probability distribution
Cumulative pmt proba
0,00
20,00
40,00
60,00
80,00
100,00
0,00 0,10 0,20 0,30 0,40 0,50 0,60Selection Probability
Nb
in %
Hamamatsu Data for all Delivered PMTs Hamamatsu Data for all Delivered PMTs
HCAL ECAL
OUTER MIDDLE INNER
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 14
Result of selection with 4 criteria
Best for Ecal inner is well selected Due to the method, distributions on parameters are smooth. No clear cut
between categories Hcal criteria are not fully met Its ok for dispatching pmts inside Ecal
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 15
Result of selection with 4 criteria
Proba- G0
Hcal Hcal
Outer Outer
Middle Middle
Inner Inner
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
1 3 5 7 9 11G0
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 16
Result of selection with 4 criteria
Proba- Luminous index
Hcal Hcal
Outer Outer
Middle Middle
Inner Inner
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
12 13 14 15 16 17 18 19 20Cathode Green Luminous I ndex
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 17
Result of selection with 4 criteria
Proba- Linearity
Hcal Hcal
Outer Outer
Middle Middle
Inner Inner
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0Linearity
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 18
Result of selection with 4 criteria
Proba / Gain Stability
Hcal Hcal
Outer Outer
Middle Middle
Inner Inner
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
-2,00 -1,50 -1,00 -0,50 0,00 0,50 1,00 1,50 2,00Gain Stability
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 19
Result of selection with 4 criteria
Linearity
0
10
20
30
40
50
60
70
80
90
100
110
120
130
-2,00 -1,00 0,00 1,00 2,00 Linearity
Nb
Hcal
Ecal Inner
Ecal Outer
Cathode Green Luminous index
0
10
20
30
40
50
60
70
80
90
100
110
120
130
12,00 14,00 16,00 18,00 20,00Cathode Green
Nb
Hcal
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 20
Result of selection with 4 criteria
Selected G0
0
10
20
30
40
50
60
70
80
90
100
110
120
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 21
Selection based on 4 probabilities
Use Hamamatsu Datasheets for 4050 pmts presently delivered Method: build a probability to sort the best for inner Ecal.
G0: ABS((G0-G0min)/(G0
max-G0min)-1)
g: ABS((-min)/(max-min)-1)
Global probability = P(G0) x P(g)
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 22
PMT Selection Based on 2 criteria (2)
G0-Luminous index Correlation
0
2
4
6
8
10
12
10 12 14 16 18 20Cathode Blue Luminous Index
G0
ECAL HCAL
HCAL
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 23
Result of selection with 2 criteria
Probability Distribution
0
50
100
150
200
250
300
0,0 0,1 0,1 0,2 0,2 0,3 0,4 0,4 0,5 0,5 0,6 0,7Probability
Num
ber
of
pmts
Hamamatsu Data for all Delivered PMTs
Cumulative pmt proba
0
20
40
60
80
100
0,0 0,1 0,2 0,3 0,4 0,5 0,6Selection Probability
Nb
in %
Hamamatsu Data for all Delivered PMTs Hamamatsu Data for all Delivered PMTs
HCAL ECAL
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 24
Result of selection with 2 criteria
Proba- Luminous index
Hcal Hcal
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
12 13 14 15 16 17 18 19 20Cathode Green Luminous I ndex
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 25
Result of selection with 2 criteria
Proba- G0
Hcal Hcal
0,0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
1 3 5 7 9 11G0
Prob
a
Hamamatsu Data for all Delivered PMTs
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 26
PMT Selection (2)
Linearity at 1.10**4
-2,0
-1,6
-1,2
-0,8
-0,4
0,0
0,4
0,8
1,2
1,6
2,0
0 500 1000 1500 2000 2500Pmt Number
%
Inner ECAL
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 27
Result of selection with 2 criteria
Selected G0
0
50
100
150
200
250
300
350
400
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal
Selected G0
0
50
100
150
200
250
300
350
400
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal Inner
Ecal
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 28
Comparison 4 and 2 criteria on G0
Selected G0
0
50
100
150
200
250
300
350
400
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal
Selected G0
0
50
100
150
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 29
Comparison between 4 and 2 criteria on G0
Selected G0
0
50
100
150
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
Selected G0
0
50
100
150
1,00 3,00 5,00 7,00 9,00 11,00 G0
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 30
Comparison between 4 and 2 criteria on Green Luminous Index
Selected Green
0
50
100
150
200
12,00 14,00 16,00 18,00 20,00 Green Luminous I ndex
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
Selected Green
0
50
100
150
200
12,00 14,00 16,00 18,00 20,00 Green Luminous I ndex
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 31
Comparison between 4 and 2 criteria on Linearity
Selected Linearity
0
50
100
150
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0 Linearity
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
Selected Linearity
0
50
100
150
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0 Linearity
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
24-06-2004 Bernard JEAN-MARIE Pmt Group Meeting 32
Comparison between 4 and 2 criteria on Linearity
Selected Stability
0
50
100
150
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0 Stability
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
Selected Stability
0
50
100
150
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0 Stability
Nb
Hcal
Ecal
Ecal outer
Ecal Middle
Ecal Inner
Recommended