US 11,990,310 B2
Radiation generation apparatus and radiation generation method
Nobuyuki Shigeoka, Hyogo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD., Kobe (JP)
Appl. No. 17/427,961
Filed by MITSUBISHI HEAVY INDUSTRIES MACHINERY SYSTEMS, LTD., Hyogo (JP)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049428
§ 371(c)(1), (2) Date Aug. 3, 2021,
PCT Pub. No. WO2020/162050, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 2019-020072 (JP), filed on Feb. 6, 2019.
Prior Publication US 2022/0130635 A1, Apr. 28, 2022
Int. Cl. H01J 37/073 (2006.01); H05H 7/02 (2006.01); H05H 7/18 (2006.01)
CPC H01J 37/073 (2013.01) [H05H 7/02 (2013.01); H05H 7/18 (2013.01); H05H 2007/025 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A radiation generation apparatus, comprising:
an accelerating tube in which an accelerating cavity is defined by a tubular-shaped housing having conductivity and a plurality of cells made of a dielectric material, center openings of the cells being aligned so as to be communicated with each other in a direction in which the cells are arranged in the housing;
an RF amplifier that supplies a high-frequency power to the accelerating tube;
an electron gun that emits charged particles passing through the openings of the cells in the accelerating tube; and
a control unit that
(1) controls an output power of the RF amplifier to be kept constant,
(2) increases electromagnetic wave energy (V) in the accelerating tube (3) with a lapse of time until the charged particles (B) are injected into the accelerating tube (3), and
(3) changes energy of the accelerated charged particles (B′) accelerated in the accelerating tube (3) by adjusting a consumption of the stored electromagnetic wave energy (V) in the accelerating tube (3) by controlling an injection time ratio (D) of the charged particles (B) from the electron gun (1).