Shielding body, and superconducting accelerator

Patent metadata

Field	Value
Publication number	US-10314158-B2
Application number	US-201615576595-A
Country	US
Kind code	B2
Filing date	May 19, 2016
Priority date	May 29, 2015
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

This shielding body for shielding from geomagnetism and radiant heat comprises: a magnetic shield portion having a plate shape formed from a magnetic body; and a radiation shield portion formed as a film on at least one among outer and inner surfaces in the magnetic shield portion, and formed from a material having a greater heat conductivity than the magnetic body.

First claim

The invention claimed is:

1. A shielding body comprising:
a magnetic shield portion having a plate shape and formed of a magnetic body; and
a radiation shield portion formed as a film on at least one of inner and outer surfaces in the magnetic shield portion and formed of a material having a greater thermal conductivity than the magnetic body, wherein each of the magnetic shield portion and the radiation shield portion is provided in a plurality of sets in one direction along each of the inner and outer surfaces, and sets adjacent to each other are provided so as to partially overlap when viewed from a direction of geomagnetism.

2. The shielding body according to claim 1 , wherein the magnetic shield portion has a larger thickness dimension than the radiation shield portion.

3. The shielding body according to claim 2 , wherein the magnetic shield portion is formed with a thickness dimension of three times or more the thickness dimension of the radiation shield portion.

4. The shielding body according to claim 1 , wherein the radiation shield portion is formed to be separated into a plurality of parts at intervals in one direction along each of the inner and outer surfaces in the magnetic shield portion.

5. A superconducting accelerator comprising:
a superconducting acceleration cavity which forms a space in which a charged particle beam is accelerated;
a refrigerant tank which is disposed on the outer periphery side of the superconducting acceleration cavity and forms a refrigerant space which is filled with a refrigerant for cooling the superconducting acceleration cavity, between the refrigerant tank and the superconducting acceleration cavity; and
the shielding body according to claim 1 , which is disposed on the outer periphery side of the refrigerant tank and covers the refrigerant tank and the superconducting acceleration cavity.

6. A shielding body comprising:
a magnetic shield portion having a plate shape and formed of a magnetic body; and
a radiation shield portion formed as a film on at least one of inner and outer surfaces in the magnetic shield portion and formed of a material having a greater thermal conductivity than the magnetic body, wherein the radiation shield portion is formed on at least one of the inner and outer surfaces so as to form a plurality of layers, and a difference in thermal deformation amount between the layer and the magnetic shield portion increases in stages with increasing distance from the inner and outer surfaces.

Assignees

• Mitsubishi Heavy Ind Mach Systems Ltd

Inventors

• Hara Hiroshi
• Sennyu Katsuya

Classifications

• H05H7/20 Primary

  with superconductive walls · CPC title

• G12B17/06

  from heat (G12B17/04 takes precedence; cooling G12B15/00) · CPC title

• G12B17/02

  from electric or magnetic fields, e.g. radio waves · CPC title

• H05K9/00

  Screening of apparatus or components against electric or magnetic fields (devices for absorbing radiation from an antenna H01Q17/00) · CPC title

• G12B17/04

  from visible, ultraviolet, or infrared light (screening of lighting devices F21V; optical filters G02B5/20) · CPC title