Results of the SLAC LCLS Gun High-Power RF Tests

Conference · Fri Nov 02 04:00:00 EDT 2007 · Conf.Proc.C070625:1296,2007

DOI:https://doi.org/10.1109/PAC.2007.4441061· OSTI ID:918951

Dowell, D H; Jongewaard, E; Limborg-Deprey, C; Schmerge, J F; Li, Z; Xiao, L; Wang, J; Lewandowski, J; Vlieks, A

The beam quality and operational requirements for the Linac Coherent Light Source (LCLS) currently being constructed at SLAC are exceptional, requiring the design of a new RF photocathode gun for the electron source. Based on operational experience at SLAC's GTF and SDL and ATF at BNL as well as other laboratories, the 1.6cell s-band (2856MHz) gun was chosen to be the best electron source for the LCLS, however a significant redesign was necessary to achieve the challenging parameters. Detailed 3-D analysis and design was used to produce near-perfect rotationally symmetric rf fields to achieve the emittance requirement. In addition, the thermo-mechanical design allows the gun to operate at 120Hz and a 140MV/m cathode field, or to an average power dissipation of 4kW. Both average and pulsed heating issues are addressed in the LCLS gun design. The first LCLS gun is now fabricated and has been operated with high-power RF. The results of these high-power tests are presented and discussed.

• Research Organization: Stanford Linear Accelerator Center (SLAC)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 918951
• Report Number(s): SLAC-PUB-12946
• Conference Information: Journal Name: Conf.Proc.C070625:1296,2007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
Accelerators
ACCPHY
BNL
CATHODES
DESIGN
ELECTRON SOURCES
HEATING
LIGHT SOURCES
LINEAR ACCELERATORS
PHOTOCATHODES
STANFORD LINEAR ACCELERATOR CENTER