JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Militsyn, B.L. AU - Angal-Kalinin, D. AU - Bainbridge, A.R. AU - Cash, R.J. AU - Cowie, L.S. AU - Fell, B.D. AU - Gilfellon, A.J. AU - Jackson, F. AU - Jones, T.J. AU - Joshi, N.Y. AU - Middleman, K.J. AU - Morrow, K.T. AU - Noakes, T.C.Q. AU - Roper, M.D. AU - Valizadeh, R. AU - Vick, A.J. AU - Walsh, D.A. ED - McIntosh, Peter ED - Burt, Graeme ED - Apsimon, Robert ED - Schaa, Volker R.W. TI - Operation of the CLARA Linear Accelerator with 2.5 Cell 10 Hz Photocathode Gun with Interchangeable Photocathodes J2 - Proc. of LINAC2022, Liverpool, UK, 28 August-02 September 2022 CY - Liverpool, UK T2 - International Linear Accelerator Conference T3 - 31 LA - english AB - During commissioning and operation run in 2021-2022 the photoinjector of the CLARA-VELA facility a 2.5 cell cavity S-band photocathode gun originally developed for the APEX experiment was used. The copper back wall of the cavity also served as the gun photocathode. In order to reduce significant time required for replacement and/or reactivation of the photocathode and improve the flexibility of the injector the gun has been upgraded for operation with DESY/INFN style interchangeable photocathodes. This upgrade included a new design of the cavity back wall to accommodate the photocathode socket and equipping the gun with a load-lock system. Modification of the gun also required replacement of the bucking coil, which zeros field in the photocathode emission plane. After the upgrade, the gun was commissioned and then operated with a hybrid Cu/Mo photocathode during the last two years. During winter-spring 2022 experimental run the gun steadily operated with a cathode field of 60 MV/m, limited by the RF power available and with an off-centre diamond turned photocathode which delivered stable bunches with a charge of 100 pC. PB - JACoW Publishing CP - Geneva, Switzerland SP - 854 EP - 857 KW - cathode KW - gun KW - operation KW - cavity KW - MMI DA - 2022/09 PY - 2022 SN - 2226-0366 SN - 978-3-95450-215-8 DO - doi:10.18429/JACoW-LINAC2022-THPORI15 UR - https://jacow.org/linac2022/papers/thpori15.pdf ER -