Experimental and simulational result multipactors in 112 MHz QWR injector

Conference · Sun May 03 00:00:00 EDT 2015

OSTI ID:1188239

Xin, T. ^[1]; Ben-Zvi, I. ^[2]; Belomestnykh, S. ^[3]; Brutus, J. C. ^[1]; Skaritka, J. ^[1]; Wu, Q. ^[1]; Xiao, B. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)
2. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)
3. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)

The first RF commissioning of 112 MHz QWR superconducting electron gun was done in late 2014. The coaxial Fundamental Power Coupler (FPC) and Cathode Stalk (stalk) were installed and tested for the first time. During this experiment, we observed several multipacting barriers at different gun voltage levels. The simulation work was done within the same range. The comparison between the experimental observation and the simulation results are presented in this paper. The observations during the test are consisted with the simulation predictions. We were able to overcome most of the multipacting barriers and reach 1.8 MV gun voltage under pulsed mode after several round of conditioning processes.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: SC00112704
• OSTI ID: 1188239
• Report Number(s): BNL-107130-2015-CP; R&D Project: KBCH139; KB0202011; TRN: US1500246
• Resource Relation: Conference: 6th International Particle Accelerator Conference (IPAC’15), Richmond, VA (United States), 3-8 May 2015
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
MHZ RANGE 100-1000
SIMULATION
ELECTRIC POTENTIAL
CATHODES
ELECTRON GUNS
COMMISSIONING
PULSES
BEAM INJECTION
BROOKHAVEN RHIC
SUPERCONDUCTING DEVICES
TESTING
VALIDATION
SECONDARY EMISSION