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    Vacuum Science & Technology Monday Sessions
       Session VST-MoM

Paper VST-MoM1
RHIC Insulating Vacuum System: Status and Performance@footnote *@

Monday, October 29, 2001, 9:40 am, Room 125

Session: Sealed and Insulating Vacuum Systems
Presenter: D. Weiss, Brookhaven National Laboratory
Authors: R. Davis, Brookhaven National Laboratory
H.C. Hseuh, Brookhaven National Laboratory
D. Pate, Brookhaven National Laboratory
L. Smart, Brookhaven National Laboratory
D. Weiss, Brookhaven National Laboratory
Correspondent: Click to Email
Superconducting magnets are used to bend and focus the heavy ions in Relativistic Heavy Ion Collider (RHIC), which has been operational for the past two years. The RHIC insulating vacuum systems consist of 40 large volumes and 112 smaller transfer lines with a cumulative length and volume over 10km and 2000 m@super 3@, respectively. Numerous pumps, valves, gauges and residual gas analyzers are deployed to maintain and monitor the integrity of the insulating vacuum, and thus minimize the heat transfer from the ambient cryostat wall to the magnet cold mass. The overall design, the construction, commissioning and operation experience of the RHIC insulating vacuum systems will be presented. The measurements and methods for locating internal helium leaks at various helium line temperatures and pressures will also be presented. @FootnoteText@ @footnote *@Work performed under the auspices of the U.S. Department of Energy.