RF Conditioning and Testing of Fundamental Power Couplers for SNS Superconducting Cavity Production

Conference · Mon May 16 04:00:00 EDT 2005

OSTI ID:861044

Stirbet, M; Davis, G K; Drury, M A; Grenoble, C; Henry, J; Myneni, G; Powers, T; Wilson, K; Wiseman, M; Campisi, I E; Kang, Y W; Stout, D

The Spallation Neutron Source (SNS) makes use of 33 medium beta (0.61) and 48 high beta (0.81) superconducting cavities. Each cavity is equipped with a fundamental power coupler, which should withstand the full klystron power of 550 kW in full reflection for the duration of an RF pulse of 1.3 msec at 60 Hz repetition rate. Before assembly to a superconducting cavity, the vacuum components of the coupler are submitted to acceptance procedures consisting of preliminary quality assessments, cleaning and clean room assembly, vacuum leak checks and baking under vacuum, followed by conditioning and RF high power testing. Similar acceptance procedures (except clean room assembly and baking) were applied for the airside components of the coupler. All 81 fundamental power couplers for SNS superconducting cavity production have been RF power tested at JLAB Newport News and, beginning in April 2004 at SNS Oak Ridge. This paper gives details of coupler processing and RF high power-assessed performances.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA
• Sponsoring Organization: USDOE - Office of Energy Research (ER)
• OSTI ID: 861044
• Report Number(s): JLAB-ACC-05-420; DOE/ER/40150-3654
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BAKING
CLEANING
NEUTRON SOURCES
PERFORMANCE TESTING
SPALLATION
SUPERCONDUCTING CAVITY RESONATORS