Design of a movable synchrotron radiation mask with SIC absorber for the Photon Factory Advanced Ring (PF-AR)

Author

Takahashi, T. ; Izawa, M. ; Sakanaka, S. ; Umemori, K. ; Suzuki, H. ; Watanabe, J.

Author_Institution

High Energy Accel. Res. Organ. (KEK), Tsukuba

fYear

2007

fDate

25-29 June 2007

Firstpage

248

Lastpage

250

Abstract

We have six rf cavities in the photon factory advanced ring (PF-AR) at KEK. One of them was seriously damaged by the synchrotron radiation (SR) from the upstream of the cavity in 2003. In order to protect the cavities from the SR, we developed movable SR masks that have SiC absorber to protect an RF contactor from HOM of the cavity. The mask head is made of Alumina dispersion-strengthened copper to block high power from the SR. It will be installed nearby the cavities in this summer. We report the design of the movable SR masks and the results of high power test.

Keywords

accelerator RF systems; accelerator cavities; electron accelerators; particle beam bunching; silicon compounds; storage rings; synchrotron radiation; HOM; KEK; PF-AR; RF contactor; SiC; SiC absorber; alumina dispersion; beam bunching; cavity section; copper; movable synchrotron radiation mask; photon factory advanced ring; Copper; Cutoff frequency; Electromagnetic heating; Production facilities; Protection; Radio frequency; Silicon carbide; Strontium; Surface fitting; Synchrotron radiation;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4440174

Filename

4440174