Radioisotope production apparatus

Patent metadata

Field	Value
Publication number	US-11410786-B2
Application number	US-201916277520-A
Country	US
Kind code	B2
Filing date	Feb 15, 2019
Priority date	Feb 19, 2018
Publication date	Aug 9, 2022
Grant date	Aug 9, 2022

Abstract

A radioisotope production apparatus includes a particle accelerator, a first target portion on which a charged particle beam emitted from the particle accelerator is incident and through which the charged particle beam passes, and a second target portion on which the charged particle beam passing through the first target portion is incident. In the first target portion, a target material is held in a beam passage, and a cooling gas supply unit which blows a cooling gas to the target material is provided. In a second target portion, a target substrate is held on a beam axis and a downstream-side surface of the target substrate with respect to the charged particle beam is cooled by cooling water. A total thickness of target foils of the first target portion on the beam axis is smaller than a thickness of the target substrate of the second target portion on the beam axis.

First claim

What is claimed is:

1. A radioisotope production apparatus which irradiates a target material with a charged particle beam to produce a radioactive isotope, the apparatus comprising:
a particle accelerator which emits the charged particle beam along a predetermined beam axis;
a first target portion on which the charged particle beam emitted from the particle accelerator is incident and through which the charged particle beam passes; and
a second target portion on which the charged particle beam having passed through the first target portion is incident,
wherein the first target portion includes:
a body barrel portion,
a beam passage which is formed through the body barrel portion and through which the charged particle beam passes,
a target holder which is attachable to and detachable from the body barrel portion,
a target material holding portion which is formed in the target holder and is configured to hold a first target material on the beam axis in the beam passage, and
a cooling gas supply unit which supplies a cooling gas for cooling the first target material;

wherein the second target portion includes:
a body portion,
a substrate holding portion which is formed in the body portion and is configured to hold a target substrate, the target substrate includes a substrate body and a second target material provided on the substrate body, on the beam axis, and
a cooling water supply unit which supplies cooling water for cooling the target substrate to a downstream-side surface of the target substrate with respect to the charged particle beam; and

wherein a total thickness of the first target material and the target material holding portion of the first target portion on the beam axis is smaller than a thickness of the target substrate on the beam axis.

2. The radioisotope production apparatus according to claim 1 ,
wherein the first target portion includes a plurality of the target material holding portions.

3. The radioisotope production apparatus according to claim 1 ,
wherein the first target material is inserted onto and extracted from the beam axis in a direction intersecting the beam axis.

Assignees

• Sumitomo Heavy Industries

Inventors

• Murakami Yoshinobu
• Guerra Francisco

Classifications

• G21K5/08 Primary

  Holders for targets or for other objects to be irradiated · CPC title

• H05H6/00 Primary

  Targets for producing nuclear reactions (supports for targets or objects to be irradiated G21K5/08 {; preparation of tritium C01B4/00; targets, e.g. pellets for fusion reactions by laser or charged particles beam injection H05H1/22}) · CPC title

• G21G1/10

  by bombardment with electrically charged particles (irradiation devices G21K5/00) · CPC title

• H05H2277/116

  Isotope production · CPC title

• H05H3/06

  Generating neutron beams (targets for producing nuclear reactions H05H6/00; neutron sources G21G4/02) · CPC title