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Title	RF Performance of a Next-Generation L-Band RF Gun at PITZ
Authors	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
Abstract	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.
Paper	download THPOJO03.PDF [0.987 MB / 4 pages]
Poster	download THPOJO03_POSTER.PDF [2.241 MB]
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Conference	LINAC2022
Series	International Linear Accelerator Conference (31st)
Location	Liverpool, UK
Date	28 August-02 September 2022
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Peter McIntosh (STFC DL, Daresbury, UK); Graeme Burt (Lancaster Univ., Lancaster, UK); Robert Apsimon (Lancaster Univ., Lancaster, UK); Volker R.W. Schaa (GSI, Darmstadt, Germany)
Online ISBN	978-3-95450-215-8
Online ISSN	2226-0366
Received	26 August 2022
Revised	31 August 2022
Accepted	03 September 2022
Issue Date	15 September 2022
DOI	doi:10.18429/JACoW-LINAC2022-THPOJO03
Pages	699-702
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.