Design of HOM coupler prototype for the APT superconducting RF cavities

Author

Kuzminski, J. ; Spalek, G. ; Bourque, R. ; Garcia, C.

Author_Institution

Gen. Atomics, San Diego, CA, USA

Volume

2

fYear

2001

fDate

2001

Firstpage

1086

Abstract

Beam dynamics calculations for the Accelerator Production of Tritium (APT) proton linac suggest that wakefields, which are excited during beam operation, would not lead to beam-breakup instabilities. However, in the superconducting (SC) radio-frequency (RF) cavities of the APT linac, higher-order modes (HOMs), whose frequencies are below the beam tube cut-off frequency, can be sufficiently excited by the beam to add significantly to the heat load removed by the helium refrigerator. In this paper, we present a design of an HOM coupler for the APT RF cavities that will remove this power to a resistive load at room temperature

Keywords

accelerator cavities; linear accelerators; particle beam dynamics; proton accelerators; superconducting cavity resonators; APT RF cavities; APT proton linac; Accelerator Production of Tritium proton linac; HOM coupler; beam dynamics calculations; beam tube cut-off frequency; beam-breakup instabilities; heat load; helium refrigerator; higher-order modes; resistive load; superconducting radiofrequency cavities; wakefields; Cutoff frequency; Helium; Linear particle accelerator; Optical coupling; Particle beams; Production; Proton accelerators; Prototypes; Radio frequency; Refrigeration;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Conference_Location

Chicago, IL

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986587

Filename

986587