Fermilab Accumulator Ring ultrahigh vacuum system

Journal Article · Thu May 01 04:00:00 EDT 1986 · J. Vac. Sci. Technol., A; (United States)

DOI:https://doi.org/10.1116/1.573971· OSTI ID:5535159

Mills, F E; Bartelson, C; Gormley, M; Klen, J; Lee, G N; Marriner, J; Misek, J R; Rathbun, T D; Satti, J A; Sax, W

An average pressure of 3 x 10/sup -10/ Torr is required in order to store a beam of antiprotons (for up to 20 h) in the Fermilab Accumulator Ring. The Accumulator Ring has a circumference of 474 m and consists of 114 main magnets which surround a continuous, stainless-steel vacuum chamber with a mean diameter of 12 cm. The Accumulator Ring is located in a below grade tunnel which is inaccessible during normal operation. Consequently, all monitoring and control operations must be done remotely. In this paper we describe: (1) the rationale of the Accumulator Ring's vacuum system; (2) the specific choice of pumping systems (roughing, ion, and sublimation) that was selected for implementation; (3) the details of the instrumentation, control, and bakeout systems (300 /sup 0/C) for monitoring the pressure and desorbing the vacuum chamber; and (4) the operating experience and performance of the entire system.

• Research Organization: Fermi National Accelerator Laboratory, Batavia, Illinois 60510
• OSTI ID: 5535159
• Journal Information: J. Vac. Sci. Technol., A; (United States), Journal Name: J. Vac. Sci. Technol., A; (United States) Vol. 4:3; ISSN JVTAD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420700 -- Engineering-- Vacuum Engineering-- (-1987)
43 PARTICLE ACCELERATORS
430400* -- Particle Accelerators-- Storage Rings
ANTIBARYONS
ANTIMATTER
ANTINUCLEI
ANTINUCLEONS
ANTIPARTICLES
ANTIPROTONS
BAKING
BARYONS
DESORPTION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEATING
NUCLEI
NUCLEONS
OPERATION
PRESSURE MEASUREMENT
PUMPING
STORAGE RINGS
VACUUM SYSTEMS