H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 43/30 (2006.01) G01C 3/08 (2006.01) H01J 43/04 (2006.01)
Patent
CA 2736593
The invention relates to a system for monitoring the gain drift of a photomultiplier (2), characterised in that the system includes: first means (4, 5, 6, 7, 8) for measuring a noise signal of the photomultiplier (2) and for delivering a measure signal (5s, 6s) representative of the noise signal of the photomultiplier (2); and second means (9, 3) for maintaining, from said measure signal (5s, 6s), the noise signal measured at a constant level. The invention can be used for stabilising the gain of photomultipliers, and more particularly for stabilising neutron measurement systems using photomultipliers.
L'invention concerne un système de contrôle de dérive de gain de photomultiplicateur (2), caractérisé en ce qu'il comprend :- des premiers moyens (4, 5, 6, 7, 8) pour mesurer un signal de bruit du photomultiplicateur (2) et délivrer un signal de mesure (5s, 6s) représentatif du signal de bruit du photomultiplicateur (2); et - des seconds moyens (9, 3) pour maintenir, à partir du signal de mesure (5s, 6s), le signal de bruit mesuré à un niveau constant. L'invention s'applique à la stabilisation du gain des photomultiplicateurs et, plus particulièrement, à la stabilisation des systèmes de mesure neutronique utilisant des photomultiplicateurs.
Frelin Anne-Marie
Hamrita Hassen
Kondrasovs Vladimir
Normand Stephane
Commissariat A. L'energie Atomique Et Aux Energies Alternatives
Goudreau Gage Dubuc
LandOfFree
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