Input coupler for accelerating cavity and accelerator

Patent metadata

Field	Value
Publication number	US-10292252-B2
Application number	US-201716062261-A
Country	US
Kind code	B2
Filing date	Feb 2, 2017
Priority date	Feb 5, 2016
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

An input coupler for an accelerating cavity includes a cylindrical external conductor; a cylindrical internal conductor arranged coaxially with the external conductor, inside of which a heating medium circulates; a plate provided between the inner surface of the external conductor and the outer surface of the internal conductor; a cooling part for cooling the plate from the external conductor side to the freezing point of water or lower; and a heat insulating part provided on the part at which the internal conductor and the plate are connected, the heat insulating part having lower thermal conductivity than that of the internal conductor. The plate is connected to the internal conductor via the heat insulating part.

First claim

The invention claimed is:

1. An input coupler for an accelerating cavity, comprising:
a cylindrical external conductor;
a cylindrical internal conductor arranged coaxially with the external conductor, inside of which a heating medium circulates;
a plate provided between an inner surface of the external conductor and an outer surface of the internal conductor;
a cooling part for cooling the plate from the external conductor side to the freezing point of water or lower; and
a heat insulating part provided on a part at which the internal conductor and the plate are connected, the heat insulating part having a lower thermal conductivity than that of the internal conductor,
wherein the plate is connected to the internal conductor via the heat insulating part.

2. The input coupler for the accelerating cavity according to claim 1 ,
wherein the heat insulating part includes a vacuum insulation structure internally kept in vacuum.

3. The input coupler for the accelerating cavity according to claim 1 ,
wherein the heat insulating part includes a bellows provided between the plate and the internal conductor.

4. The input coupler for the accelerating cavity according to claim 1 , further comprising a second plate provided between the inner surface of the external conductor and the outer surface of the internal conductor, the second plate being different from the plate,
wherein a space between the plate and the second plate is kept in vacuum.

5. An accelerator comprising an accelerating cavity provided with the input coupler for the accelerating cavity according to claim 1 .

Assignees

• Mitsubishi Heavy Ind Mach Systems Ltd

Inventors

• Okihira Kazunori
• Sennyu Katsuya
• Matsuda Ryuichi

Classifications

• H05H7/02 Primary

  Circuits or systems for supplying or feeding radio-frequency energy · CPC title

• H05H7/18 Primary

  Cavities; Resonators {(travelling-wave tubes H01J23/18; hyperfrequency cavities in general H01P7/04, H01P7/06)} · CPC title

• H05H2007/025

  Radiofrequency systems · CPC title

• H05H7/22

  Details of linear accelerators, e.g. drift tubes (H05H7/02 - H05H7/20 take precedence) · CPC title

• H05H7/20

  with superconductive walls · CPC title