roc without “floating” wires
DESCRIPTION
Test of readout chambers – Summary of C side. Readout Chambers under further investigation. C05. C16 IROC anomalous anode wires. C02 IROC anomalous anode/edge wire. C07. C04 OROC anomalous anode wires. C08. C09. C05 IROC anomalous anode wire. C10. C05 OROC - PowerPoint PPT PresentationTRANSCRIPT
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ROC without “floating” wires
C16 IROC anomalous anode wires
C02 IROC anomalous anode/edge wire
C04 OROC anomalous anode wires
Test of readout chambers – Summary of C side
C05 IROC anomalous anode wire
C06 OROC floating gating grid wire
Readout Chambers under further investigation
ROC with “floating” wire(s) either anode or gg
C07
C08
C05 OROC anomalous anode wire
C05
C09
C10
C07 OROC anomalous anode wire C08 OROC anomalous anode wire
C11
C12
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C00 - IROC
Va = 1350 V Va = 1380 V
Va = 1420 V
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C00 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C00 - GAIN
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C01 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
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C01 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
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C01 - GAIN
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C02 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
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C02 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
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C02 - GAIN
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C03 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
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C03 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
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C03 - GAIN
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C04 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
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C04 - OROC
Va = 1600 V Va = 1650 V
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C04 - GAIN
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C05 - IROC
Va = 1350 V
Va = 1380 V
Va = 1390 V
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C05 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
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C05 - GAIN
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C06 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±17%
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C06 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
gain variation ±21%
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C06 - GAIN
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C07 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±14%
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C07 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
gain variation ±14%
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C07 - GAIN
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C08 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±17%
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C08 - OROC
Va = 1600 V
Va = 1650 V
Va = 1670 V
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C08 - GAIN
1670V
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C09 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±20%
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C09 - OROC
Va = 1600 V
Va = 1650 V
Va = 1700 V
gain variation ±20%
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C09 - GAIN
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C10 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±15%
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C10 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
gain variation ±12%
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C10 - GAIN
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C11 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±11%
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C11 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
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C11 - GAIN
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C12 - IROC
Va = 1350 V Va = 1380 V
Va = 1430 V
gain variation ±15%
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C12 - OROC
Va = 1600 V Va = 1650 V
Va = 1700 V
gain variation ±24%
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C12 - GAIN
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C13 - IROC
Va = 1350 V Va = 1400 V
Va = 1430 V
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C13 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C13 - GAIN
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C14 - IROC
Va = 1350 V Va = 1400 V
Va = 1430 V
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C14 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C14 - GAIN
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C15 - IROC
Va = 1350 V Va = 1380 V
Va = 1420 V
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C15 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C15 - GAIN
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C16 - IROC
Va = 1350 V Va = 1380 V
Va = 1400 V
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C16 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C16 - GAIN
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C17 - IROC
Va = 1350 V Va = 1380 V
Va = 1420 V
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C17 - OROC
Va = 1550 V Va = 1600 V
Va = 1650 V
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C17 - GAIN
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-20
-10
0
10
20
30
40
50
60
70
80
90
100
C00 C01 C02 C03 C04 C05 C06 C07 C08 C09 C10 C11 C12 C13 C14 C15 C16 C17
Vm
ax
- V
no
m (
Vo
lt)
IROCs Vmax - Vnom OROC's Vmax - Vnom
IROC's Vmax_meas - Vnom OROC's Vmax_meas - Vnom
Summary - gain
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Sector IROC pad row with gain excess
OROCpad row with gain excess
C02 1 -
C04 53, 54, 60, 64, 68 -
C05 33, 34 37,38
C06
C07 - 51, 52
C08 - 11, 12, 13, 15, 16, 59, 60, 64, 65, 66
C16 4, 39
Summary – “floating” anode wires
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Va = 1600 V Va = 1650 V
Example (worst) of a ROC with anomalous anode wire – C04 OROC
Signal in pad row 61 is 4 x nominal amplitude!
However, it reduces with time of operation see next slide
Further measurements and simulations in progress
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Va = 1600 V
Example (worst) of a ROC with anomalous anode wire – C04 OROC
Septembre 1, 16h:00
Va = 1600 V
Va = 1600 V
Septembre 2, 14h:00
Septembre 2, 15h:00
Va = 1600 V
Septembre 2, 16h:00
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Long term test – C05 IROC
Va = 1380 V Va = 1380 V
Va = 1380 V Va = 1380 V
Septembre 12, 10h:00 Septembre 12, 12h:00
Septembre 12, 14h:45 Septembre 12, 17h:45
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61
Va = 1600 V Va = 1650 V
Va = 1700 V
Septembre 8
Long term test – C05 OROC
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Va = 1650 V Va = 1650 V
Va = 1650 V Va = 1650 V
Septembre 12, 10h:00 Septembre 12, 12h:00
Septembre 12, 14h:45 Septembre 12, 17h:45
Long term test – C05 OROC