The vacuum system for the PEP II High Energy Ring straight sections

Author

Wienands, U. ; Daly, E. ; Heifets, S.A. ; Kulikov, A. ; Kurita, N. ; Nordby, M. ; Perkins, C. ; Reuter, E. ; Seeman, J.T. ; Belser, EC ; Berg, J. ; Holdener, ER ; Kerns, J.A. ; McDaniel, M.R. ; Stoeff, W.

Author_Institution

Stanford Linear Accel. Center, Stanford Univ., CA, USA

Volume

4

fYear

1995

fDate

1-5 May 1995

Firstpage

2129

Abstract

The six straight insertions of the PEP II High Energy Ring (HER) serve various functions: lattice tuning, beam injection and abort, providing space for RF cavities, longitudinal and transverse feedback, beam diagnostics and the interaction point. A stainless steel vacuum system has been designed; prototypes are currently being built. Cooling is required due to radiation coming from the last arc dipole and resistive losses in the vacuum chamber. Although the nominal beam current of the HER is 1 A the vacuum system is designed for 3 A to provide margin and an upgrade path

Keywords

accelerator RF systems; accelerator cavities; electron accelerators; particle beam diagnostics; particle beam injection; storage rings; vacuum apparatus; 1 A; 3 A; PEP II High Energy Ring straight sections; RF cavities; arc dipole; beam abort; beam diagnostics; beam injection; interaction point; lattice tuning; longitudinal feedback; nominal beam current; resistive losses; stainless steel; transverse feedback; upgrade path; vacuum system; Cooling; Copper; Elementary particle vacuum; Flanges; Heating; Impedance; Magnetic materials; Temperature; Vacuum systems; Welding;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 1995., Proceedings of the 1995

Conference_Location

Dallas, TX

Print_ISBN

0-7803-2934-1

Type

conf

DOI

10.1109/PAC.1995.505477

Filename

505477