A new tool for beam-life research at HLS storage ring

Author

Li, Yuxiong ; Li, Juexin ; Liu, Zuping ; Li, Weimin

Author_Institution

Nat. Synchrotron Radiat. Lab., Univ. of Sci. & Technol. of China, Hefei, China

Volume

4

fYear

2003

fDate

12-16 May 2003

Firstpage

2715

Abstract

A beam loss monitoring system was set up for HLS (Hefei Light Source) last year. The beam loss message includes some beam life related factors. So, besides detecting vacuum failures in the storage ring, this system may serve as a useful tool in beam life research. The beam life is composed of three parts: Touschek life, quantum life and vacuum life. The exact loss position of the corresponding stored electrons can be concluded if we detect shower electrons, which give a distinct clue of loss location, but not to detect bremsstrahlung photos or neutrons. So it is important to analyze the positions where beam losses take place and qualitatively distinguish them. With the help of this system, the researchers have found and resolved following problems: A 20-40 mA beam loss frequently observed during ramping process; vacuum dead area near the front ends of beam lines; a beam life decline when a 6-Tesla superconducting wiggler was powered; etc.

Keywords

electron accelerators; particle beam diagnostics; particle beam stability; storage rings; wigglers; 6 T; HLS storage ring; Hefei light source; Touschek life; beam loss monitoring system; beam-life research; bremsstrahlung neutrons; bremsstrahlung photos; detect shower electrons; quantum life; ramping process; superconducting wiggler; vacuum dead area; vacuum life; Condition monitoring; Electrons; Elementary particle vacuum; Energy loss; High level synthesis; Light sources; Loss measurement; Neutrons; Storage rings; Vacuum systems;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289240

Filename

1289240