A Simple, Low Cost Longitudinal Phase Space Diagnostic

Conference · Fri May 15 00:00:00 EDT 2009

OSTI ID:952982

Bertsche, Kirk; Emma, Paul; Shevchenko, Oleg

For proper operation of the LCLS [1] x-ray free-electron laser (FEL), and other similar machines, measurement and control of the electron bunch longitudinal phase space is critical. The LCLS accelerator includes two bunch compressor chicanes to magnify the peak current. These magnetic chicanes can generate significant coherent synchrotron radiation (CSR), which can distort the phase space distribution. We propose a diagnostic scheme by exciting a weak skew quadrupole at an energy-chirped, high dispersion point in the first LCLS bunch compressor (BC1) to reconstruct longitudinal phase space on an OTR screen after BC1, allowing a time-resolved characterization of CSR effects.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 952982
• Report Number(s): SLAC-PUB-13614; TRN: US0902634
• Resource Relation: Conference: Presented at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
COMPRESSORS
DISTRIBUTION
ELECTRONS
FREE ELECTRON LASERS
PHASE SPACE
QUADRUPOLES
SCREENS
SYNCHROTRON RADIATION
Accelerators
Instrumentation
ACCPHY
INST
XFEL