 Tue May 28 05:43:41 2019, A. Algora, 133Ba source. (IR052 from the third floor)
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Start: 13:43
Stop: 14:05
Comments: The source looks also too strong. Rates: 39 kHz (Dynodes), 40 kHz (anodes). |
Tue May 28 05:30:03 2019, A. Algora, Reference detector threshold changed 
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Again the Reference detector was firing mainly in the noise. Threshold increased to 5000 !!!!
New config file was saved, rate of Ref detector now: aprox. 400 kHz |
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Mon May 27 13:58:03 2019, A. Algora, Background, no lmd, AIDA in, no sources around
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Start: 21:59
Stop: 13:15 (next day, 28/05)
Rates: 1.9-2.3 (dynodes), 1.8-1.9 kHz (anodes) |
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Mon May 27 13:50:54 2019, A. Algora, preparation directory moved
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| The preparation directory was moved to /data/DRikenPreparation (from its first place /home/dacq/DRikenPreparation) because the lack of space. |
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Mon May 27 12:54:48 2019, A. Algora, Reference detector
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The reference detector was very noisy. The threshold has been changed from 2000 to 3200. We should look at this more carefully.
The position of the fiber was also changed. It moved too close to the Cs peak. Probably it has to do with the flexibility of the plastik screw
that fixes it. |
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Mon May 27 09:12:22 2019, A. Algora, Background, with AIDA
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Start: 17:13
Stop: 18:03
Rates: 1.8 kHz (Dynodes), 1.8 kHz Anodes |
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Mon May 27 08:26:20 2019, A. Algora, Co source on top of Aida
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Start: 16:28
Stop: 17:03
Rates: 14.4 kHz (Dinodes), 12.8 kHz (Anodes) |
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Mon May 27 07:34:58 2019, A. Algora, HV status
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EMPTY00 │ 0.0 V 1500.0 uA 0.5 V 0.5 uA Off
│00.0000
DET01 │ 599.0 V 1500.0 uA 598.5 V 90.0 uA On |
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Mon May 27 07:18:26 2019, A. Algora, AIDA Plastik
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Nishimura san found the module used for the AIDA plastik in the last BRIKEN run. We put it instead of the TFA. It was kept in the same
setting conditions as in the earlier experiment.
AIDA plastic module configuration (Ortec 671 Amplifier) |
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Mon May 27 07:15:06 2019, A. Algora, 137Cs run, AIDA out, source in the center
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Start: 15:15
Stop: 15:31
Lmd: 137Cs_source_201905271514_187.dlt .. 137Cs_source_201905271514_195.dlt |
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Mon May 27 07:11:22 2019, A. Algora, detectors realigned with Cs
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Small alignment corrections were needed, of the order of 0.5-1V.
All detectors were realigned |
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Sat May 25 07:04:52 2019, A. Algora, Ancilliary card used channels until now
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For the moment there are three channels connected.
Channel 5 is AIDA plastic,
Channel 10 is the anode of the Ref detector |
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Sat May 25 06:53:35 2019, A. Algora, Background, no dlt files, last config file
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Start: 14:53 (May 25)
Stop: 14: 37 (May 27)
Root: 201905271437_background.root |
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Sat May 25 03:42:12 2019, A. Algora, Background, no sources around, Aida out
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Start: 11:42
Stop: 14:45
Lmd: Background_201905251141_182.dlt ..Background_201905251141_186.dlt |
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Sat May 25 02:11:09 2019, A. Algora, 60Co source, red box, no sources around, No AIDA
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Start: 10:27
Stop: 11:31
Root: 201905251131_60co.root |
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Fri May 24 12:32:48 2019, A. Algora, Background measurement, no sources around
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Start: 20:32
Stop: 10:05
Lmd: Background_201905242032_111.dlt ...Background_201905242032_114.dlt |
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Fri May 24 10:57:37 2019, A. Algora, 60Co, AIDA out, possitioned 5 mm deeper
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Start: 18:58
Stop: 20:20
Lmd: 60Co_source_201905241858_095.dlt ...60Co_source_201905241858_106.dlt |
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Fri May 24 09:43:49 2019, A. Algora, 137Cs source, AIDA out, to check assymetry
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Start: 17:43
Stop: 18:51
Root: 201905241851_137Cs.root |
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Fri May 24 08:33:52 2019, A. Algora, background, AIDA is out
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Start: 16:35
Stop: 17:30
Rates: 1.5 kHz (Dynodes), 1.8 kHz (Anodes) |
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Fri May 24 07:57:51 2019, A. Algora, Lead shielding heigth increased
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The aluminium plate of 3 cm thickness arrived and the lead shielding was dismounted and mounted again. We left a narrower hole in it.
Special thanks to Tom, who helped with the hard physical work. |