IAC-Peak Sensing Measurements

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09/05/13

Detector voltage is 2.8, 3.4 kV for cathode and GEM.


Run Number Notes
5869 shutter open x
5872 shutter close x
5873 shutter open x
5876 shutter open x
5877 shutter close x
5884 shutter close 1 R5884 shutterclose.png
5885 shutter open 1 R5885 shutteropen.png



Run Number Amp level discriminator level Notes
5925 50, 4 3.6 shutter close
5926 50, 4 3.6 shutter open
5927 100 3.6 shutter open
5928 200 3.6 shutter open, high amp level
5929 100, 10 3.6 shutter open high amp level
5930 100, 7 3.6 shutter open
5936 100, 7 0.1 shutter open, noise peak channel 74
5937 100, 7 0.1 shutter open, V_cath = V_GEM,noise peak channel 74
5948 100, 7 1.15 shutter open, detector is on, no signal overlapping, reached to te signal highest rate, with almost 100% signal to noise ratio.

The following run has the same setting as the last run, unless there is achange written in the notes.

Cath_3400 GEM_2800V

Run Number start time end time time difference Unix Start time Unix End time Unix Time diff Scaler time shutter Notes
5948 14:22:14 14:36:09 00:13:55 20:22:14 20:36:07 00:13:53 305,502 open scalar time does not match the others
5949 15:02:43 15:19:59 00:17:16 21:02:43 21:19:56 00:17:13 377,148 open scalar time does not match the others
5950 15:20:42 15:35:07 00:14:25 21:20:42 21:35:04 00:14:22 open r5951 and r5952 has the shutter close and integrate 1
5951 22:41:29 22:08:12 00:32:47 close
5952 22:12:44 22:35:34 00:22:50 close
5953 16:37:03 15:35:07 00:02:04 22:37:03 22:45:38 00:07:35 close integrate lower from 1 to 0.5,sthg strange happened, root does not show a picture and the rate increased suddenly to 450 Hz
5957 09:01:07 09:25:12 00:24:05 15:01:07 15:25:10 00:24:03 open integrate 0.5
5959 09:30:21 09:55:15 00:24:53 15:30:21 15:55:12 00:24:50 close integrate 1

Cath_3350 GEM_2750V

Run Number start time end time time difference Unix Start time Unix End time Unix Time diff shutter Notes
5960 09:58:42 10:30:28 00:31:46 15:58:42 16:30:25 00:31 :43 close
5961 10:30:49 11:11:50 41'01" 16:30:49 17:11:47 40' 58" close
5962 11:13:03 11:28:21 15'18" 17:13:03 17:28:18 15' 15" close
5963 11:32:44 11:58:39 25' 55" 17:32:43 17:58:37 25' 52" open
5964 11:59:17 12:21:59 22' 42" 17:59:17 18:21:56 22' 39" open
5965 12:22:24 12:42:38 20'14" 18:22:24 18:42:36 20' 12" open



Cath_3300 GEM_2700V

Run Number start time end time shutter Notes
5967 19:22:05 19:48:42 open scaler not counting Hz pulse (run 5976 was counting)
5968 19:49:04 20:15:44 open
5969 20:15:44 20:47:18 open
5978 11:33:33 11:48:05 close
5979 11:48:27 11:59:49 close
5980 12:00:17 12:31:03 close


Cath_3250 GEM_2650V

Run Number start time end time shutter Notes
5972 20:52:15 21:15:18 open
5973 06:43:29 07:29:57 open
5974 07:30:49 08:17:48 open
5975 08:23:58 09:30:48 close
5976 09:33:58 10:42:48 close
5977 10:43:11 11:31:26 close


Cath_3200 GEM_2600V

Run Number start time end time shutter Notes
5983 17:42:06 22:07:02 close
5984 17:42:06 06:43:46 N close very low noise level
5985 06:44:44 12:10:48 close
5986 12:14:53 12:59:45 open
6047 18:44:41 21:21:49 open


Cath_3150 GEM_2550V

Run Number start time end time shutter Notes
5954 16:55:52 08:44:23 N close integrate 1 rate changed from 1.2 Hz to 57 Hz due to increase the noise level overnight only.
5966 12:44:21 19:15:35 open