Analyzer for radiotherapy radiation beam

Details Analyzer for radiotherapy radiation beam Analyzer for radiotherapy radiation beam

1992-05-18

1994-05-03

Hannaher, Constantine

Radiant energy

Invisible radiant energy responsive electric signalling

Including a radiant energy responsive gas discharge device

G01T 1185, H01J 4704

Patent

active

053089880

ABSTRACT:
A radiation detector has a number of ionization chambers. Each ionization chamber is connected to an accumulating capacitor which in turn is sequentially read by a multiplexed charge-counter. The charge-counter eliminates the effect of variations of the capacitance values of the accumulating capacitors associated with each ionization chamber cell and provides a consistency of measurement among the ionization chamber cells unlike a design employing multiple measurement circuits dedicated to each ionization chamber cell.

REFERENCES:
patent: 2953702 (1960-09-01), Zieler
patent: 4365161 (1982-12-01), Dalton et al.
patent: 4935950 (1990-06-01), Ranallo et al.
patent: 4970398 (1990-11-01), Scheid
patent: 5006714 (1991-04-01), Attix
patent: 5025376 (1991-06-01), Bova et al.
patent: 5041730 (1991-08-01), Attix

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