Cryogenic testing and analysis associated with Tevatron lower temperature operation

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:416702

Theilacker, J C ^[1]

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1. Fermi National Accelerator Lab., Batavia, IL (United States)

An upgrade of the Tevatron cryogenic system was installed and commissioned in 1993 to allow lower temperature operation. As a result, higher energy operation of the Fermilab superconducting Tevatron accelerator is possible. Following the installation and initial commissioning, it was decided to continue the current colliding beam physics run at the previous energy of 900 GeV. This has allowed the author to perform parasitic lower temperature tests in the Tevatron over the last year and a half. This paper presents the results of operational experiences and thermal and hydraulic testing which have taken place. The primary goal of the testing is to better understand the operation of the cold compressor system, associated instrumentation, and the performance of the existing magnet system during lower temperature operation. This will lead to a tentatively scheduled higher energy test run in the fall of 1995. The test results have shown that more elaborate controlling methods are necessary in order to achieve reliable system operation. Fortunately, the new satellite refrigerator controls system is capable of the expansion necessary to reach this goal. New features are being added to the controls systems which will allow for more intelligent control and better diagnostics for component monitoring and trending.

• DOE Contract Number: AC02-76CH03000
• OSTI ID: 416702
• Report Number(s): CONF-950722--
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
COMPUTERIZED CONTROL SYSTEMS
COOLING SYSTEMS
CRYOGENICS
FERMILAB TEVATRON
MODIFICATIONS
PERFORMANCE TESTING