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A Simple, Low Cost Longitudinal Phase Space Diagnostic

Conference ·
OSTI ID:952982
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:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515;
OSTI ID:
952982
Report Number(s):
SLAC-PUB-13614
Conference Information:
Presented at Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009
Country of Publication:
United States
Language:
English