Flexible control of femtosecond pulse duration and separation using an emittance-spoiling foil in x-ray free-electron lasers

Journal Article · Mon Jun 22 00:00:00 EDT 2015 · Physical Review Letters

OSTI ID:1187771

Ding, Y. ^[1]; Behrens, C. ^[2]; Coffee, R. ^[1]; Decker, F. -J. ^[1]; Emma, P. ^[1]; Field, C. ^[1]; Helml, W. ^[3]; Huang, Z. ^[1]; Krejcik, P. ^[1]; Krzywinski, J. ^[1]; Loos, H. ^[1]; Lutman, A. ^[1]; Marinelli, A. ^[1]; Maxwell, T. J. ^[1]; Turner, J. ^[1]

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1. SLAC National Accelerator Lab., Menlo Park, CA (United States)
2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
3. Technische Univ. Munchen, Garching (Germany)

We report experimental studies of generating and controlling femtosecond x-ray pulses in free-electron lasers (FELs) using an emittance spoiling foil. By selectivity spoiling the transverse emittance of the electron beam, the output pulse duration or double-pulse separation is adjusted with a variable size single or double slotted foil. Measurements were performed with an X-band transverse deflector located downstream of the FEL undulator, from which both the FEL lasing and emittance spoiling effects are observed directly.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1187771
• Report Number(s): SLAC-PUB-16312
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters
• Country of Publication: United States
• Language: English

Related Subjects

ACCPHY
XFEL