Selection and evaluation of an ultra high vacuum gate valve for Isabelle beam line vacuum system
A minimum of eighty-four (84) Ultra High Vacuum Gate Valves will be utilized in ISABELLE to protect proton beam lines from catastrophic vacuum failure and to provide sector isolation for maintenance requirements. The valve to be selected must function at less than 1 x 10/sup -11/ Torr pressure and be bakeable to 300/sup 0/C in its open or closed position. In the open position, the valve must have an RF shield to make the beam line walls appear continuous. Several proposed designs were built and evaluated. The evaluation consisted mainly of leak testing, life tests, thermal cycling, mass spectrometer analysis, and 10/sup -12/ Torr operation. Problems with initial design and fabrication were resolved. Special requirements for design and construction were developed. This paper describes the tests on two final prototypes which appear to be the best candidates for ISABELLE operation.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5066246
- Report Number(s):
- BNL-28266; CONF-801037-4; TRN: 80-016982
- Resource Relation:
- Conference: American Vacuum Society conference, Detroit, MI, USA, 13 Oct 1980
- Country of Publication:
- United States
- Language:
- English
Similar Records
Evaluation of ISABELLE full cell ultra high vacuum system
REQUIREMENTS AND GUIDELINES FOR NSLS EXPERIMENTAL BEAM LINE VACUUM SYSTEMS-REVISION B.