Title :
Ion Pump Operation on a 5.5 MeV and 12 MeV Van de Graaff Accelerator
Author :
Adams, Charles T.
Author_Institution :
University of Pennsylvania, Tandem Accelerator Laboratory Philadelphia, Penna.
fDate :
6/1/1965 12:00:00 AM
Abstract :
An improved vacuum system, using combined Ion and Cryo-pumping techniques has been successfully used on Van de Graaff accelerator beam tubes. The pumping through-put of the Ion pumps has proved more than adequate in handling tube discharges. Base pressures are in the mid 10-7 torr range, while operating pressures have been improved by factors of 2-9 over Hg. diffusion pumped systems. System maintenance has been virtually eliminated. This paper describes Ion pump starting techniques, roughing systems and characteristic operation of Ion pumping and combined Ion and Cryo-pumping on a C.N. and E.N. accelerator.
Keywords :
Acceleration; Electron tubes; Hydrogen; Ion accelerators; Ion sources; Mercury (metals); Nitrogen; Pumps; Sparks; Vacuum systems;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1965.4323641