Author: Lilje, L.
Paper Title Page
THPOJO03 RF Performance of a Next-Generation L-Band RF Gun at PITZ 699
 
  • M. Krasilnikov, Z. Aboulbanine, G.D. Adhikari, N. Aftab, P. Boonpornprasert, M.E. Castro Carballo, G.Z. Georgiev, J. Good, M. Groß, A. Hoffmann, C. Koschitzki, X.-K. Li, A. Lueangaramwong, D. Melkumyan, R. Niemczyk, A. Oppelt, B. Petrosyan, S. Philipp, M. Pohl, H.J. Qian, C.J. Richard, J. Schultze, F. Stephan, G. Vashchenko, T. Weilbach
    DESY Zeuthen, Zeuthen, Germany
  • M. Bousonville, F. Brinker, M. Hoffmann, K. Knebel, D. Kostin, S. Lederer, L. Lilje, S. Pfeiffer, R. Ritter, S. Schreiber, H. Weise, J. Ziegler
    DESY, Hamburg, Germany
  • G. Shu
    IHEP, Beijing, People’s Republic of China
  • M. Wenskat
    University of Hamburg, Institut für Experimentalphysik, Hamburg, Germany
 
  A new gen­er­a­tion of nor­mal con­duct­ing 1.3GHz RF gun was de­vel­oped to pro­vide a high-qual­ity elec­tron source for su­per­con­duct­ing linac dri­ven free-elec­tron lasers like FLASH and Eu­ro­pean XFEL. Com­pared to the Gun4 se­ries, Gun5 aims for a 50% in­crease of the du­ra­tion of the RF pulse (up to 1 ms at 10 Hz rep­e­ti­tion rate) com­bined with high gra­di­ents (up to ~60 MV/m at the cath­ode). In ad­di­tion to the im­proved im­ped­ance, the new cav­ity is equipped with an RF probe to mea­sure and con­trol the am­pli­tude and phase of the RF field in­side the gun. The first pro­to­type of the new RF gun was man­u­fac­tured at DESY and in­stalled at the Photo In­jec­tor Test fa­cil­ity at DESY in Zeuthen (PITZ) in Oc­to­ber 2021. In mid-Oc­to­ber 2021 the RF con­di­tion­ing began, aim­ing for achiev­ing the afore­men­tioned RF pa­ra­me­ters. The con­di­tion­ing pro­ce­dure in­volves a slow grad­ual in­crease in rep­e­ti­tion rate, RF pulse du­ra­tion and peak power while care­fully mon­i­tor­ing vac­uum con­di­tions and sig­nals from in­ter­lock sen­sors. The re­sults of RF con­di­tion­ing will be re­ported.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOJO03  
About • Received ※ 26 August 2022 — Revised ※ 31 August 2022 — Accepted ※ 03 September 2022 — Issue date ※ 15 September 2022
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