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TY - CONF AU - Cowie, L.S. AU - Apsimon, R. AU - Brynes, A.D. AU - Burt, G. AU - Jones, J.K. AU - Mete, Ö. AU - Millar, W.L. AU - Moss, A.J. AU - Wheelhouse, A.E. AU - Williams, P.H. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - An X-Band Lineariser for the CLARA FEL J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - The CLARA FEL at Daresbury Laboratory will employ four S-band linacs to accelerate electron bunches to 250 MeV/c. In order to compress the bunch sufficiently to achieve peak currents suitable for FEL lasing, one must compensate for curvature imprinted on the longitudinal phase space of the bunch. For CLARA a harmonic RF linearization system has been designed to achieve this requirement. The linearization will be achieved by an X-band travelling wave cavity of the PSI/CERN design, which incorporates wake-field monitoring of the bunch position. A five-axis mover will align the cavity to the beam axis. Pulse compression of a 6 MW klystron pulse will provide the required power to achieve a 30 MV/m operational gradient. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3848 EP - 3851 KW - cavity KW - FEL KW - simulation KW - wakefield KW - klystron DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPAL084 UR - http://jacow.org/ipac2018/papers/thpal084.pdf ER -