Difference between revisions of "GEM Fission IAC 11082013"
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| 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 | | 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 | ||
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| − | | 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 | + | | 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 |
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| + | | 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, [[File:r6588-6593_cmpare.png| 200 px]][[File:r6593_scopepic.png| 200 px]] | ||
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Revision as of 16:21, 8 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,  
|