Measurement of helium leak rates with temperature and pressure in RHIC

Authors
Davis, R De La Parra, C Hseuh, HC Mickaliger, P Pate, DJ
Citation
R. Davis et al., Measurement of helium leak rates with temperature and pressure in RHIC, VACUUM, 60(1-2), 2001, pp. 131-135
Citations number
9
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
VACUUM
ISSN journal
0042207X → ACNP
Volume
60
Issue
1-2
Year of publication
2001
Pages
131 - 135
Database
ISI
SICI code
0042-207X(200101/02)60:1-2<131:MOHLRW>2.0.ZU;2-D
Abstract
The changes in helium leak rates with pressure and temperature from helium- cooled magnet vessels into insulating vacuum were measured. The leak rates increased by three orders of magnitude when the vessels were cooled from am bient temperature to 4.5 K. The changes in leak rates were found to be smal ler than those of a Viscous flow through a capillary tube. (C) 2001 Elsevie r Science Ltd. All rights reserved.