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dc glow-discharge cleaning for accelerator [electronic resource].

Published
Upton, N.Y. : Brookhaven National Laboratory, 1982.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 4 : digital, PDF file
Additional Creators
Brookhaven National Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Average pressure of 1 x 10/sup -11/ torr and vacuum stability are necessary for the successful operation of the proton storage rings such as ISABELLE. Vacuum degassing at high temperature and in situ bake-out will reduce the thermoout-gassing rate of the beam tubes to approx. 10/sup -13/ Tl/cm/sup 2/ sec, therefore achieving the required static pressure. The vacuum instability caused by beam-induced ion desorption can be solved by dc glow discharge cleaning. With evidence from this study, the present understanding of glow discharge in a cylindrically symmetric geometry is reviewed. Argon and argon/oxygen mixture serve as plasmas in the glow. The role of oxygen in cleaning the beam tubes during the glow discharge is demonstrated experimentally. Glow discharge cleaning with and without bake-out is also studied.
Report Numbers
E 1.99:bnl-31822
E 1.99: conf-821024-4
conf-821024-4
bnl-31822
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Note
Published through SciTech Connect.
01/01/1982.
"bnl-31822"
" conf-821024-4"
"DE82022049"
10. international symposium on discharges and electrical insulation in vacuum, Columbia, SC, USA, 25 Oct 1982.
Hseuh, H.C.; Chou, T.S.
Funding Information
AC02-76CH00016
View MARC record | catkey: 14696998