Performance of VJRR, Six O’clock Valve Boxes and Circulating Compressor

Technical Report · Thu Nov 21 04:00:00 EST 1996

DOI:https://doi.org/10.2172/1119232· OSTI ID:1119232

Wu, K. C. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)

During the period from July 15 through July 20 1996, the helium refrigerator for the Relativistic Heavy Iron Collider, RHIC, was used to cool to liquid helium temperature the Vacuum Jacketed Transfer Line from Refrigerator to Ring, the VJRR, two Valve Boxes in the six o' clock position at the ring, and one spool of the Vacuum Jacketed Line connecting the Valve Box and the RHIC tunnel, the VJR. The superconducting bus in the valve boxes and lines was powered to 7000 amperes. The refrigerator and cryogenic distribution system are mainly operated by personnel from the RHIC Cryogenic Section. This report present preliminary results obtained from this test including 1) heat loads of the 55 K shields of the VJRR and the Valve Boxes, 2) 4 K heat loads of the supply and the cooldown return lines in the VJRR, and 3) the pump performance curve of the circulating compressor located in the 6 O'clock Blue Valve. Further verification of these results will be acquired during the first sextant test.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 1119232
• Report Number(s): BNL--101890-2013-IR
• Country of Publication: United States
• Language: English

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