MainPage:Nuclear:KaonDetector:PMTCharacteristics:LogBook:pag02
Revision as of 17:17, 30 May 2012 by Nathaniel (talk | contribs) (→LogBook on the CODA data acquisition, at CUA)
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LogBook on the CODA data acquisition, at CUA
Page 2, [1].
| Run Number | Date | User | PMT | High Voltage | Experiment | Description and observations | Image |
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| 635 | 05/25/2012 | Marco | 09561 | -1.800 | PMT Scanning | Remove LED, insert another paper attenuator (working now with 2 layers), cut a piece of the blue rubber that protects the LED contacts (trying to make better contact). Increase pulse for pot high 10 (at +5V) and keep width 4 (at 15ns). Scanning with 10x10x1k. Reference PMT (Ref_635) really stable now! Two suspects: the LED must work with 5V for this very fast pulse (don`t know the resistor that is connected in series with it) or the bad contact was fixed. | Error creating thumbnail: Unable to save thumbnail to destination
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| 636 | 05/25/2012 | Marco | 09561 | -1.798 | PMT Scanning | Working in the same conditions of run #635. 100x100x1k scanning. Reference PMT signal: Ref_636. Color scale in number of photoelectrons (calibration in run #558). Now the LED is constant! It is important to say that the amount of light (using just two attenuator papers) is big. | Error creating thumbnail: Unable to save thumbnail to destination
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| 640 | 05/30/2012 | Nathaniel | 09561 | -1.700 | PMT Gain | I know am running similar tests to the gains tests in runs 556-563. However this time I am using Dark Box 1 instead of Dark Box 2. This will allow systematic error analysis. | Error creating thumbnail: Unable to save thumbnail to destination
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