Design and performance of the traveling-wave beam chopper for the SSRL injector

Author

Borland, M. ; Weaver, J.N. ; Baltay, M. ; Emery, L. ; Fisher, A.S. ; Golceff, P. ; Hettel, R. ; Morales, H. ; Sebek, J. ; Wiedemann, H. ; Youngman, B. ; Anderson, R. ; Miller, R.H.

Author_Institution

Stanford Synchrotron Radiat. Lab., CA, USA

fYear

1991

fDate

6-9 May 1991

Firstpage

976

Abstract

A pulsed, split-parallel plate chopper has been designed, built, and installed as part of the preinjector of the Stanford Synchrotron Radiation Laboratory (SSRL) injector. Its function is to allow into the linear accelerator (linac) three consecutive S-band bunches from the long bunch train provided by an RF gun. A permanent magnet deflector (PMD) at the chopper entrance deflects the beam into an absorber when the chopper pulse is off. The beam is swept across a pair of slits at the beam output end when a 7 kV, 10 ns rise-time pulse passes in the opposite direction through the 75 Omega stripline formed by the deflecting plates. Bunches exiting the slits have their trajectories corrected by another PMD, and enter the linac. Beam tests demonstrate that the chopper functions as expected.<>

Keywords

beam choppers; beam handling equipment; electron accelerators; linear accelerators; RF gun; S-band bunches; SSRL injector; Stanford Synchrotron Radiation Laboratory; chopper entrance; linear accelerator; permanent magnet deflector; split-parallel plate chopper; Acceleration; Cathodes; Ceramics; Choppers; Control engineering; Laboratories; Linear accelerators; Linear particle accelerator; Radio frequency; Synchrotron radiation;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1991. Accelerator Science and Technology., Conference Record of the 1991 IEEE

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-7803-0135-8

Type

conf

DOI

10.1109/PAC.1991.164509

Filename

164509