hi:hi:blmservicerecords
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hi:hi:blmservicerecords [2019/09/20 13:20] p.boutachkov |
hi:hi:blmservicerecords [2020/12/11 13:33] (current) p.boutachkov FAIR BLM records |
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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 ====== | ||
| + | CBS - Cathode Blue sensitivity | ||
| + | ABS - For a anode blue sensitivity | ||
| + | Id - Dark current | ||
| + | |||
| + | ^ SN ^ CBS [uA/lmF] ^ ABS [A/lmF] ^ HV [V] ^ Id[nA] ^ Gain [10< | ||
| + | | 34391 | 12.6 | 10 | 1188 | 4.98 | 0.79 | new, will be installed in TE1 | | ||
| + | | 29181 | | | | | | used, low gain, was in S07DL1R | | ||
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| ====== GS06DL3U ====== | ====== GS06DL3U ====== | ||
| Reason for the service: The detector counts more than 10 times compare to the detectors above, left and right of it. | Reason for the service: The detector counts more than 10 times compare to the detectors above, left and right of it. | ||
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| * No yellowing, signs of mechanical damage on the surface. | * No yellowing, signs of mechanical damage on the surface. | ||
| * Under UV, no spots | * Under UV, no spots | ||
| - | The Standard operating voltage is 1100 V, I< | + | The Standard operating voltage is 1100 V, I< |
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| + | ====== FAIR Type ====== | ||
| + | * Measurement with Micsing scope, BW 150 MHz, dT=100 ns/div, dV = 200 mV/div, trigger -104 mV | ||
| + | * The LED drive, pulse, positive, voltage is 3V, width 50 ns, rise/fall time 5 ns, frequency 1 kHz | ||
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| + | ^ PMT S/N ^ AVD S/N [uA] ^ I@1500V [uA] ^ Dark counts@1500V [Hz]^ Vmin[V] LED on ^ | ||
| + | | LA8177 | ||
| + | | LA8178 | ||
| + | | LA8179 | ||
hi/hi/blmservicerecords.1568978449.txt.gz · Last modified: 2019/09/20 13:20 by p.boutachkov
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