CERN Accelerating science

Article
Title	Status of the Cryogenic System Commissioning at SNS
Author(s)	Casagrande, Fabio ; Arenius, Dana ; Campisi, Isidoro E ; Creel, Jonathan ; Dixon, Kelly ; Ganni, Venkatarao ; Gurd, Pamela ; Hatfield, Daniel ; Howell, Matthew ; Knudsen, Peter ; Stout, Daniel ; Strong, William
Affiliation	(Jefferson Lab, Newport News, Virginia) ; (ORNL/ASD, Oak Ridge, Tennessee) ; (ORNL/SNS, Oak Ridge, Tennessee)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.970
Subject category	Accelerators and Storage Rings
Abstract	The Spallation Neutron Source (SNS) is under construction at Oak Ridge National Laboratory. The cold section of the Linac consists of 81 superconducting radio frequency cavities cooled to 2.1K by a 2400 Watt cryogenic refrigeration system. The major cryogenic system components include warm helium compressors with associated oil removal and gas management, 4.5K cold box, 7000L liquid helium dewar, 2.1K cold box (consisting of 4 stages of cold compressors), gaseous helium storage, helium purification and gas impurity monitoring system, liquid nitrogen storage and the cryogenic distribution transfer line system. The overall system commissioning strategy and status will be presented.