Observation of intensity dependent losses in Au(15+) beams

Author

Blaskiewicz, M. ; Ahrens, L.A. ; Hseuh, H.C. ; Roser, T. ; Shoji, Y. ; Zeno, K.

Author_Institution

AGS Dept., Brookhaven Nat. Lab., Upton, NY, USA

Volume

1

fYear

1995

fDate

1-5 May 1995

Firstpage

381

Abstract

During the 1994 heavy ion run at Brookhaven a strongly intensity dependent loss for the Au(15+) beam in the AGS Booster was encountered. Coherent instabilities or space charge induced stopband losses were neither expected nor consistent with the data. It was found that the beam lifetime was an order of magnitude shorter for normal operating conditions than in the low intensity limit with the inverse lifetime increasing monotonically with the injected number of particles. Studies data are presented and the Au(15+) situation is compared with that for Au(33+). Various hypothetical mechanisms are considered

Keywords

gold; ion accelerators; ion beams; particle beam stability; positive ions; space charge; synchrotrons; AGS Booster; Au; Au(15+) beams; Au(33+); Brookhaven heavy ion run; beam lifetime; coherent instabilities; intensity dependent losses; inverse lifetime; low intensity limit; normal operating conditions; space charge induced stopband losses; strongly intensity dependent loss; Acceleration; Cooling; Current transformers; Gold; History; Magnetic fields; Particle beam injection; Particle beams; Protons; Space charge;

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.1995.504667

Filename

504667