Radiant energy – Invisible radiant energy responsive electric signalling – Including a radiant energy responsive gas discharge device
Patent
1996-10-24
1997-09-30
Fields, Carolyn E.
Radiant energy
Invisible radiant energy responsive electric signalling
Including a radiant energy responsive gas discharge device
G01T 1185
Patent
active
056728786
ABSTRACT:
An ionization chamber for monitoring a radiation beam includes a housing having a primary beam passageway and a number of secondary beam cells that are adjacent to the primary beam passageway. The primary beam passageway passes entirely through the housing. In the preferred embodiment, a large-area beam measuring electrode and an array of small-area beam measuring electrodes are each coaxial with the primary beam passageway. Also, in the preferred embodiment, each secondary beam cell includes a beam measuring electrode. Because the portions of the radiation beam that enter the secondary beam cells do not pass through the ionization chamber, these portions do not contaminate the treatment beam, allowing the beam measuring electrodes within the cells to be dimensioned and configured so as to maximize signal strength.
REFERENCES:
patent: 3838284 (1974-09-01), McIntyre et al.
patent: 3852610 (1974-12-01), McIntyre
patent: 3942012 (1976-03-01), Boux
patent: 4131799 (1978-12-01), Stieber
patent: 4206355 (1980-06-01), Boux
patent: 4427890 (1984-01-01), Taumann
patent: 4627089 (1986-12-01), Menor et al.
patent: 4751393 (1988-06-01), Corey, Jr. et al.
patent: 5072123 (1991-12-01), Johnsen
patent: 5326976 (1994-07-01), Kikuchi
Fields Carolyn E.
Siemens Medical Systems Inc.
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