Operating Results from SPEAR

Author

Scholl, R. ; Voss, J. ; Wiedemann, H. ; Allen, M. ; Augustin, J.-E. ; Boyarski, A. ; Davies-White, W. ; Dean, N. ; Fischer, G. ; Harris, J.L. ; Karvonen, L. ; Larsen, R.R. ; Lee, M.J. ; Morton, P. ; McConnell, R. ; Paterson, J.M. ; Rees, J. ; Richter, Ben

Author_Institution

Stanford Linear Accelerator Center Stanford University, Stanford, California 94305

Volume

20

Issue

3

fYear

1973

fDate

6/1/1973 12:00:00 AM

Firstpage

752

Lastpage

755

Abstract

Initial operating experience with the SLAC electron-positron storage ring SPEAR is described. A luminosity of 1.2 Ã— 1031 cm-2 sec-1 has been achieved and two-beam interaction effects are described. A single-beam coherent instability, which can be suppressed either by control of the ring chromaticity or by feedback, has been observed. Current-dependent bunch lengthening and widening have been observed, and experiments indicate that these phenomena may be associated with an increase in the energy spread of the beam. Procedures to increase the luminosity to the design value are discussed. Plans to increase the maximum beam energy of SPEAR to 4.5 GeV are described.

Keywords

Colliding beam devices; Electron beams; Elementary particles; Feedback; Linear accelerators; Particle beams; Positrons; Storage rings; Structural beams; Testing;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.1973.4327233

Filename

4327233