Radiant energy – With charged particle beam deflection or focussing – With target means
Reexamination Certificate
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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“Review of Scientific Instruments,” vol. 64, No. 8, pp. 2074-2084, Aug. 1993.
Nakayama Takahide
Natori Takayoshi
Yanagisawa Masaki
Berman Jack I.
Dickstein & Shapiro LLP
Hitachi , Ltd.
Sahu Meenakshi S
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