Speaker
Brian DeGraff
(ORNL)
Description
The Spallation Neutron Source (SNS) at Oak Ridge National Lab (ORNL) has built and commissioned an independent Cryogenic Test Facility (CTF) in part to support 4.5 K operation of a Horizontal Test Apparatus (HTA) vessel in the Radiofrequency Test Facility (RFTF) test cave. The HTA provides the functionality for testing a single dressed SNS medium or high beta Superconducting Radiofrequency (SCRF) cavity. The vessel’s capability to provide for in-situ plasma processing of the cavity’s inner niobium surface will be discussed. The design and commissioning of the HTA at 4.5 K will be presented as well as results from operating the HTA including cool-down, warm-up and steady state operations. Result from plasma processing a warm SCRF cavity in-between cold HTA tests will also be addressed.
Author
Brian DeGraff
(ORNL)
Co-authors
Mr
Brian Hannah
(ORNL)
Mr
Jeffery Saunders
(ORNL)
Mr
Marc Doleans
(ORNL)
Mr
Matt Howell
(ORNL)
Sang-ho Kim
(SNS/ORNL)
Mr
Thomas Neustadt
(ORNL)
