Low emittance operation of the SPring-8 storage ring by damping partition control

Author

Nakamura, T. ; Ohshima, T. ; Soutome, K. ; Takao, M. ; Takano, S. ; Masaki, M. ; Suzuki, Y. ; Yamazaki, H. ; Tanaka, H. ; Hara, T. ; Kohmura, Y. ; Tanaka, Y.

Author_Institution

JASRI/SPring-8, Hyogo, Japan

Volume

4

fYear

2001

fDate

2001

Firstpage

2665

Abstract

The SPring-8 storage ring is an 8-GeV light source and its emittance at normal operation is 6 nm with double bend achromat optics. To reduce the emittance further, we tested the control of damping partition number by changing the RF acceleration frequency to enhance the radiation damping of horizontal betatron motion and reduced the emittance to 2 nm. The emittance was estimated by several methods and the energy damping time was measured by the spectrum of the synchrotron oscillation. The measured values show good agreement with the result of the code MAD8

Keywords

electron accelerators; particle beam diagnostics; storage rings; 8 GeV; MAD8; RF acceleration frequency; SPring-8; damping partition control; double bend achromat optics; emittance; energy damping time; horizontal betatron motion; storage ring; Damping; Energy measurement; Life estimation; Light sources; Motion control; Radio frequency; Stimulated emission; Storage rings; Testing; Time measurement;

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.2001.987866

Filename

987866