Title :
Improvement of RHIC warm beam vacuum for high intensity operation
Author :
He, P. ; Hseuh, H.C. ; Lee, R.C. ; Mapes, M. ; Smart, L.A. ; Weiss, D. ; Zhang, S.Y.
Author_Institution :
Collider-Accelerator Dept., Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
With increasing ion beam intensity during recent RHIC operations, pressure rises of several decades were observed at a few warm vacuum sections. Improvement of the warm sections has been carried out in last year´s shutdown. Extensive in-situ bakes, additional UHV pumping, electron detectors and beam tube solenoids have been implemented. Vacuum monitoring and interlock were enhanced to reduce premature beam aborts. The effectiveness of these measures in reducing the beam induced pressure bumps and in increasing the vacuum system reliability are discussed and summarized.
Keywords :
beam handling techniques; electron tubes; ion accelerators; particle beam dynamics; storage rings; synchrotrons; vacuum apparatus; RHIC operations; RHIC warm beam vacuum; UHV pumping; beam induced pressure bumps; beam tube solenoids; electron detectors; high intensity operation; ion beam intensity; vacuum monitoring; vacuum system reliability; warm vacuum sections; Electron beams; Electron tubes; Event detection; Gold; Helium; Ion beams; Laser excitation; Monitoring; Scattering; Vacuum systems;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289477
