Charged particle beam extraction system and method

Details Charged particle beam extraction system and method Charged particle beam extraction system and method

2008-06-10

2008-06-10

Berman, Jack I. (Department: 2881)

Radiant energy

With charged particle beam deflection or focussing

With target means

C250S492300, C315S501000, C315S505000, C315S507000

Reexamination Certificate

active

07385203

ABSTRACT:
A charged particle beam extraction system and method capable of ensuring higher safety when extraction of an ion beam is on/off-controlled during irradiation of the ion beam for treatment. The charged particle beam extraction system comprises a charged particle beam generator including a synchrotron, a range modulation wheel (RMW) for forming a Bragg peak width of a charged particle beam extracted from the charged particle beam generator, a gate signal generator for controlling start and stop of extraction of the charged particle beam from the charged particle beam generator in accordance with a rotational angle of the RMW, and an irradiation control/determination section for determining whether the start and stop of extraction of the charged particle beam is controlled at desired timing by the gate signal generator.

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