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| Nuclear hyperfine mixing in 229Th89+ |
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Message ID: 191
Entry time: Sun Apr 10 03:56:56 2022
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| Author: |
V. Hannen |
| Category: |
Detectors |
| Subject: |
Low rate in PMT South |
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PMT south shows a much lower count rate than observed in elog entry 170.
Yesterday the voltage on this PMT was increased to 2400 V and the threshold setting of the CAEN CFD to 90 units, (from 70 units before) however the low readout rate was already apparent both for the analog and the discriminated signal then.
Update Sun Apr 10, 21:45: on advice from D. Winters, increased the PMT voltage to 2500 V (max. the HV supply can do, the PMT could handle up to 3000 V) |
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