Title :
Measurements of compression and emittance growth after the first LCLS bunch compressor chicane
Author :
Bane, K. ; Ding, Y. ; Emma, P. ; Frisch, J. ; Huang, Z. ; Loos, H. ; Sannibale, F. ; Sonnad, K. ; Stupakov, G. ; Wu, J. ; Zolotorev, M. ; Prat, E.
Author_Institution :
SLAC, Stanford
Abstract :
The Linac Coherent Light Source (LCLS) is a SASE X-ray free-electron laser project presently under construction at SLAC [1]. The injector section from RF photocathode gun through first bunch compressor chicane was installed during the fall of 2006. The first bunch compressor is located at 250 MeV and nominally compresses a 1-nC electron bunch from an rms length of about 1 mm to 0.2 mm. Transverse phase space and bunch length diagnostics are located immediately after the chicane. We present preliminary measurements and simulations of the longitudinal and transverse phase space after the chicane in various beam conditions, including extreme compression with micron-scale current spikes.
Keywords :
beam handling equipment; electron accelerators; linear accelerators; particle beam bunching; particle beam diagnostics; particle beam injection; photocathodes; LCLS bunch compressor chicane; Linac Coherent Light Source; RF photocathode gun; SASE X-ray free-electron laser project; SLAC; bunch length diagnostics; electron bunch; emittance growth; injector section; longitudinal phase space; micron-scale current spikes; transverse phase space diagnostics; Acceleration; Chirp; Current measurement; Electrons; Laser modes; Linear particle accelerator; Phase measurement; Radio frequency; Space charge; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440746
