Construction and commissioning of the alternating-gradient synchrotron booster ultrahigh vacuum system

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States)

DOI:https://doi.org/10.1116/1.577987· OSTI ID:7198753

Hseuh, H C; Mapes, M; Shen, B; Sikora, R ^[1]

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1. Brookhaven National Laboratory, Upton, New York 11973 (United States)

The recently completed alternating-gradient synchrotron booster is a synchrotron for the acceleration of both protons and heavy ions. To minimize the beam loss due to charge exchange of the partially stripped, low {beta}(={ital v}/{ital c}), very heavy ions with the residual gas molecules, ultrahigh vacuum of 10{sup {minus}11} Torr is required for the 200 m booster ring. An average pressure of mid 10{sup {minus}11} Torr has been achieved and maintained after initial {ital in} {ital situ} bakes and commissioning. In this article we describe: (1) design and layout of the vacuum systems; (2) material selection and vacuum processing; (3) personal computers/programmable logic controllers based bakeout system; (4) operation of vacuum instrumentation over long cable length; (5) results of bakeout and evaluation; and (6) experience gained during construction and commissioning.

• OSTI ID: 7198753
• Journal Information: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States), Journal Name: Journal of Vacuum Science and Technology, A (Vacuum, Surfaces and Films); (United States) Vol. 10:4; ISSN 0734-2101; ISSN JVTAD
• Country of Publication: United States
• Language: English

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ACCELERATORS
CYCLIC ACCELERATORS
DESIGN
OPERATION
SYNCHROTRONS
VACUUM SYSTEMS