Difference between revisions of "GEM Fission IAC 11082013"

From New IAC Wiki
Jump to navigation Jump to search
Line 5: Line 5:
 
| Run || Conditions
 
| 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
+
| 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
 
| 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

Revision as of 16:30, 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, R6588-6593 cmpare.pngR6593 scopepic.png


TGEMS#GEM_fission_chamber_tests