Measurement of Amplitude Fluctuations in a Rapid Response Photomultiplier; MESURE DES FLUCTUATIONS D'AMPLITUDE D'UN PHOTOMULTIPLICATEUR A REPONSE RAPIDE
Technical Report
·
OSTI ID:4797089
In order to measure amplitude fluctuations in a rapid response photomultiplier, two independent random variables are introduced which determine the shape of the anode pulse. The energy of each pulse, which depends directly on the gain and the variance, is the first variable; amplitude fluctuations, functions of the first variable, depend as well on the pulse width which in turn constitutes the second variable. The results obtained on the variations of the maximum impulse, using a steep-edged pulse broadening circuit, and those obtained on the statistical variations of the gain, are compared to show that the variance relative to the maximum amplitude of the signal is greater than that of the grain. Within the limits of these fluctuations are shown the contribution of the secondary emission coefficient of the first dynode, and that of the mean secondary emission coefficient of the multiplier. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclsy
- NSA Number:
- NSA-16-014902
- OSTI ID:
- 4797089
- Report Number(s):
- CEA-1770
- Country of Publication:
- France
- Language:
- English
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