Title :
Measurements of intra-beam scattering growth times with gold beam below transition in RHIC
Author :
Fischer, W. ; Bai, M. ; Blaskiewicz, M. ; Brennan, J.M. ; Cameron, P. ; Connolly, R. ; Lehrach, A. ; Parzen, G. ; Tepikian, S. ; Zeno, K. ; van Zeijts, J.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
While RHIC is filled with beam, bunches are stored for up to several minutes at the injection energy before acceleration starts. In gold operation, the RHIC injection energy is below transition. A bunch length increase, and correspondingly an increase in the longitudinal emittance, can lead to particle loss during transition crossing and rebucketing into the storage buckets. The longitudinal growth of gold beams in RHIC at injection is dominated by intra-beam scattering. Measurements of longitudinal growth times are presented and compared with computations
Keywords :
colliding beam accelerators; ion accelerators; particle beam stability; storage rings; RHIC injection energy; bunches; gold operation; injection energy; intra-beam scattering; longitudinal growth times; particle loss; rebucketing; storage buckets; transition crossing; Gold; Ion beams; Length measurement; Light scattering; Monitoring; Particle beam injection; Particle scattering; Size measurement; Testing; Time measurement;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987934
