A Photomultiplier Gain Stabilization Circuit; UN CIRCUITO PER LA STABILIZZAZIONE DELLA AMPLIFICAZIONE DI UN FOTOMOLTIPLICATORE
Technical Report
·
OSTI ID:4732173
A simple method is described for the gain stabilization of a photomultiplier in which the stabilization system does not interfere with the fast pulse spectrum to be measured. The functioning principle consists in sending a low frequency (75 Hz) and low irtensity light pulse, which gives a modulation of the photomultiplier thermic noise, on the photocathode together with the scintillation light. The modulation frequency is then selected by a special filter. The signal in this way obtained is used to trigger a feedback circuit, which gets the photomultiplier gain constant, suitably varying its voltage. (auth)
- Research Organization:
- Italy. Instituto Superiore di Sanita, Rome
- NSA Number:
- NSA-17-018536
- OSTI ID:
- 4732173
- Report Number(s):
- ISS-62/40
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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