Performance of production SRF cavities for CEBAF

Conference · Tue Jun 01 04:00:00 EDT 1993

OSTI ID:6228369

Reece, C; Benesch, J; Kneisel, P; Kushnick, P; Mammosser, J; Powers, T

Construction of the Continuous Electron Beam Accelerator Facility recirculating linac represents the largest scale application of superconducting rf (SRF) technology to date. Over 250 of the eventual 338 SRF 1497 MHz cavities have been assembled into hermetic pairs and completed rf testing at 2.0 K. Although the rf performance characteristics well exceed the CEBAF baseline requirements of Q[sub 0] = 2.4[times]10[sup 9] at 5 MV/m, the usual limiting phenomena are encountered field emission, quenching, Q-switching, will occasional multipacting. An analysis of the occurrence conditions and severity of these phenomena during production cavity testing is presented. The frequency with which performance is limited by quenching suggests that additional material advances may be required for applications which require the reliable achievement of accelerating gradients of more than 15 MV/m. The distributions of frequency and Q for a higher-order mode are also presented.

• Research Organization: Southeastern Universities Research Association, Inc., Newport News, VA (United States). Continuous Electron Beam Accelerator Facility
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 6228369
• Report Number(s): DOE/ER/40150-212; CEBAF-PR--93-018; CONF-930511--268; ON: DE93017367
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
BEAMS
CAVITY RESONATORS
CEBAF ACCELERATOR
ELECTRON BEAMS
ELECTRONIC EQUIPMENT
EQUIPMENT
FREQUENCY DEPENDENCE
LEPTON BEAMS
LINEAR ACCELERATORS
PARTICLE BEAMS
PERFORMANCE TESTING
QUENCHING
RESONATORS
RF SYSTEMS
SUPERCONDUCTING CAVITY RESONATORS
SUPERCONDUCTING DEVICES
TESTING