Recent study of beam stability in the PSR

Author

Wang, T. ; Cooper, R. ; Fitzgerald, D. ; Frankle, S. ; Hardek, T. ; Hutson, R. ; Macek, R. ; Ohmori, C. ; Plum, M. ; Thiessen, H. ; Wilkinson, C. ; Colton, E. ; Neuffer, D. ; Rees, G.

Author_Institution

Los Alamos Nat. Lab., NM, USA

fYear

1993

fDate

17-20 May 1993

Firstpage

3297

Abstract

A fast transverse instability with beam loss has been observed in the 800-MeV Los Alamos Proton Storage Ring (PSR) when the injected beam intensity reaches 2 to 4×10¹³ protons per pulse. Previous observations indicate that the instability is most likely driven by electrons trapped within the proton beam. Theoretical study has shown that beam leakage into the inter-bunch gap leads to electron trapping. Recent experiments were carried out by using the newly installed “pinger” and by varying the machine transition gamma to explore further the “e-p” instability and the nature of the instability. This paper summarizes some of these recent experimental results and theoretical studies

Keywords

particle beam diagnostics; proton accelerators; storage rings; 800-MeV Los Alamos Proton Storage Ring; PSR; beam leakage; beam loss; beam stability; e-p instability; electron trapping; fast transverse instability; injected beam intensity; inter-bunch gap; machine transition gamma; pinger; proton beam; Electron beams; Electron traps; Impedance; Laboratories; Particle beam injection; Particle beams; Protons; Stability; Storage rings; US Department of Energy;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1993., Proceedings of the 1993

Conference_Location

Washington, DC

Print_ISBN

0-7803-1203-1

Type

conf

DOI

10.1109/PAC.1993.309631

Filename

309631