EXPERIENCE IN REDUCING ELECTRON CLOUD AND DYNAMIC PRESSURE RISE IN WARM AND COLD REGIONS IN RHIC.

Conference · Fri Jun 23 00:00:00 EDT 2006

OSTI ID:885019

ZHANG, S Y; AHRENS, L; ALLESI, J; BAI, M; BLASKIEWICZ, M; CAMERON, P; CONNOLLY, R; DREES, A; FISCHER, W; GULLOTTA, J; HE, P; HSEUH, H C; HUANG, H; LEE, R; LITVINENKO, V; MACKAY, W W; MONTAG, C; NICOLETTI, A; OERTER, B; PILAT, F ; PTITSYN, V; ROSER, T; SATOGATA, T; SMART, L; SYNDSTRUP, L; TEPIKIAN, S; THIEBERGER, P; TRBOJEVIC, D; WEI, J; ZENO, K

The large scale application of non-evaporable getter coating in RHIC has been effective in reducing the electron cloud. Since beams with higher intensity and smaller bunch spacing became possible in operation, the emittance growth is of concern. Study results are reported together with experiences of machine improvements: saturated NEG coatings, anti-grazing ridges in warm sections, and the pre-pumping in cryogenic regions.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: DOE/SC
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 885019
• Report Number(s): BNL-75445-2006-CP; R&D Project: 18026; KB0202011; TRN: US0603761
• Resource Relation: Conference: 10TH BIENNIAL EUROPEAN PARTICLE ACCELERATOR CONFERENCE (EPAC); EDINBURGH, UK; 20060626 through 20060630
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
CLOUDS
COATINGS
CRYOGENICS
ELECTRONS
GETTERS