Difference between revisions of "GEM Fission IAC 11082013"

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=Runlist=
 
=Runlist=
 
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| 6598|| Decreased Post amp from x6 to x1 Shutter '''Closed''' V_gem= 2800 V_cath=3100, CFD threshold at 21 mV, 10 Hz clock in scaler channel 5, rate was 22 Hz,  
 
| 6598|| Decreased Post amp from x6 to x1 Shutter '''Closed''' V_gem= 2800 V_cath=3100, CFD threshold at 21 mV, 10 Hz clock in scaler channel 5, rate was 22 Hz,  
 
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−
| 6599|| same as run 6598 V_gem= 2800 V_cath=2800, CFD threshold at 21 mV, rate was 22 Hz,  
+
| 6599|| same as run 6598 V_gem= 2800 V_cath=2800, CFD threshold at 21 mV, rate was 79 Hz,
 +
|-
 +
| 6600|| Decreased Post amp from x6 to x1 Shutter '''Closed''' V_gem= 2800 V_cath=3100, CFD threshold at 15 mV, 10 Hz clock in scaler channel 5, rate was 79 Hz,
 +
|-
 +
| 6601|| Decreased Post amp from x6 to x1 Shutter '''Open''' V_gem= 2800 V_cath=3100, CFD threshold at 15 mV, 10 Hz clock in scaler channel 5, rate was 114 Hz,  
 
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|-
 +
| 6603|| added attenuator, changed CFD post amp no longer differentiating signal, Shutter '''Closed''' V_gem= 2800 V_cath=3100, 10 Hz clock in scaler channel 5, rate was 114 Hz,
 +
|-
 +
| 6605|| added attenuator of 5 dB, switch the CFD to LED with a threshold of 150 mV,post amp no longer differentiating signal, Shutter '''Closed''' V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 26 Hz,
 +
|-
 +
| 6606|| added attenuator of 5 dB, switch the CFD to LED with a threshold of 150 mV,post amp no longer differentiating signal, Shutter '''Open''' V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 26 Hz,
 +
|-
 +
| 6608|| added attenuator of 5 dB,  LED with a threshold of 120 mV,post amp no longer differentiating signal, Shutter '''Open''' V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 55 Hz,
 +
|-
 +
| 6609|| added attenuator of 5 dB, LED with a threshold of 120 mV,post amp no longer differentiating signal, Shutter '''Closed''' V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 38 Hz,
 +
|-
 +
 +
| 6663|| attenuator of 3 dB, LED with a threshold of 217 mV,post amp integrating 500, Shutter '''Open''' V_gem= 2820 V_cath=3225, 10 Hz clock in scaler channel 5, rate was 27 Hz,
 +
|-
 +
| 6664|| attenuator of 3 dB, LED with a threshold of 217 mV,post amp x1 integrating 500, Shutter '''Closed''' V_gem= 2820 V_cath=3225, 10 Hz clock in scaler channel 5, rate was 26 Hz, GFC for closed is 1219+_ 3, and for open 1820 +_2 [[File:r6664_scopepic.png| 200 px]] [[File:r6664-6663_cmpare.png| 200 px]]
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[[TGEMS#GEM_fission_chamber_tests]]
 
[[TGEMS#GEM_fission_chamber_tests]]

Latest revision as of 15:15, 11 November 2013

Runlist

Run Conditions
6588 Run GEM detector in Hall at V_gem= 2650 V_cath=2950 Shutter Open! Signal on ADC5 at about 1000 channels, CFD threshold at 84 mV, 10 Hz clock in scaler channel 5, rate was 7 Hz
6589 same as run 6588 except, V_gem = V_cath = 2650 and lowered CFD threshold to 64 mV because there were no triggers, rate was 2 kHz, noise was at 1000 channels as well, a lot of pileup but histogram seems representative of noise. increase GEM gain
6593 Run GEM detector in Hall at V_gem= 2700 V_cath=3150, CFD threshold at 88 mV, 10 Hz clock in scaler channel 5, rate was 27 Hz, R6588-6593 cmpare.pngR6593 scopepic.png
6594 V_gem= 2750 V_cath=3150, CFD threshold at 88 mV, 10 Hz clock in scaler channel 5, rate was 27 Hz,
6595 Shutter Closed now V_gem= 2750 V_cath=3150, CFD threshold at 88 mV, 10 Hz clock in scaler channel 5, rate was 27 Hz, 33 min 29 sec,
6596 Shutter Open now V_gem= 2800 V_cath=3100, CFD threshold at 88 mV, 10 Hz clock in scaler channel 5, rate was 31 Hz,
6597 Shutter Closed now V_gem= 2800 V_cath=3100, CFD threshold at 88 mV, 10 Hz clock in scaler channel 5, rate was 27 Hz,
6598 Decreased Post amp from x6 to x1 Shutter Closed V_gem= 2800 V_cath=3100, CFD threshold at 21 mV, 10 Hz clock in scaler channel 5, rate was 22 Hz,
6599 same as run 6598 V_gem= 2800 V_cath=2800, CFD threshold at 21 mV, rate was 79 Hz,
6600 Decreased Post amp from x6 to x1 Shutter Closed V_gem= 2800 V_cath=3100, CFD threshold at 15 mV, 10 Hz clock in scaler channel 5, rate was 79 Hz,
6601 Decreased Post amp from x6 to x1 Shutter Open V_gem= 2800 V_cath=3100, CFD threshold at 15 mV, 10 Hz clock in scaler channel 5, rate was 114 Hz,
6603 added attenuator, changed CFD post amp no longer differentiating signal, Shutter Closed V_gem= 2800 V_cath=3100, 10 Hz clock in scaler channel 5, rate was 114 Hz,
6605 added attenuator of 5 dB, switch the CFD to LED with a threshold of 150 mV,post amp no longer differentiating signal, Shutter Closed V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 26 Hz,
6606 added attenuator of 5 dB, switch the CFD to LED with a threshold of 150 mV,post amp no longer differentiating signal, Shutter Open V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 26 Hz,
6608 added attenuator of 5 dB, LED with a threshold of 120 mV,post amp no longer differentiating signal, Shutter Open V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 55 Hz,
6609 added attenuator of 5 dB, LED with a threshold of 120 mV,post amp no longer differentiating signal, Shutter Closed V_gem= 2850 V_cath=3200, 10 Hz clock in scaler channel 5, rate was 38 Hz,
6663 attenuator of 3 dB, LED with a threshold of 217 mV,post amp integrating 500, Shutter Open V_gem= 2820 V_cath=3225, 10 Hz clock in scaler channel 5, rate was 27 Hz,
6664 attenuator of 3 dB, LED with a threshold of 217 mV,post amp x1 integrating 500, Shutter Closed V_gem= 2820 V_cath=3225, 10 Hz clock in scaler channel 5, rate was 26 Hz, GFC for closed is 1219+_ 3, and for open 1820 +_2 R6664 scopepic.png R6664-6663 cmpare.png


TGEMS#GEM_fission_chamber_tests

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