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hi:hi:blmservicerecords [2019/09/20 17:21] p.boutachkov |
hi:hi:blmservicerecords [2019/09/25 15:23] p.boutachkov |
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+ | ====== Calibration ====== | ||
+ | The BLM calibration is performed with a < | ||
+ | The source emits a single gamma at 661.7 keV. The source activity was 323.2 kBq as of 11.01.2019. Its serial number is AB-9020, 370 kBq when purchased. | ||
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+ | I have used 10 s integration time and set all BLM to count 30 k. (3 kHz) | ||
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+ | Note on the light yield. Reference Glenn Knoll 3rd edition p.235 and p226 NE102A 10 k photons per MeV. BC400 light output 0.65 of NE102A (anthrscene). Hence one can expect: 6500 photons / keV | ||
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+ | Bellow is a spectrum taken with the HDO6104A scope when for a BLM set to count 3 kHz (in this case XP2972 34391) | ||
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+ | {{: | ||
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====== XP2972 PMT History ====== | ====== XP2972 PMT History ====== | ||
CBS - Cathode Blue sensitivity | CBS - Cathode Blue sensitivity |