Title :
Electron detectors for vacuum pressure rise diagnostics at RHIC
Author :
Iriso-Ariz, U. ; Drees, A. ; Fischer, W. ; Gassner, D. ; Gould, O. ; Gullota, J. ; Lee, R. ; Ponnaiyan, V. ; Trbojevic, D. ; Zeno, K. ; Zhang, S.Y.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
Abstract :
In the RHIC 2001 run, an unexpected vacuum pressure rise versus bunch increasing currents was observed in both gold and proton operations. This pressure increase due to molecular desorption is suspected to be induced mainly by electron multipacting, but other causes may coexist, such as ion desorption due to halo scraping. In order to get a reliable diagnostic of the phenomenon electron detectors have been installed along the RHIC ring. In this report we describe results measured by the electron detectors with energy filters during the RHlC 2002/2003 run.
Keywords :
colliding beam accelerators; ion accelerators; particle beam bunching; particle beam diagnostics; storage rings; synchrotrons; RHIC; RHIC ring; electron detectors; electron multipacting; energy filters; halo scraping; ion desorption; molecular desorption; proton operations; vacuum pressure rise; Colliding beam devices; Detectors; Electron beams; Energy measurement; Filters; Gold; Pressure measurement; Protection; Protons; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289480
