WECN2

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URL	https://doi.org/10.18429/JACoW-IPAC2025-WECN2
Title	First beam commissioning of the HZB SRF photoelectron gun
Authors	T. Kamps, A. Frahm, A. Ushakov, A. Neumann, B. Alberdi-Esuain, D. Eichel, E. Brookes, E. Ergenlik, F. Pflocksch, F. Hoffmann, G. Rehm, G. Klemz, H. Stein, H. Plötz, J. Ullrich, J. Voelker, J. Kuehn, N. Ohm, O. Schappeit, P. Echevarria, R. Fleischhauer, S. Mistry, S. Rotterdam, S. Lederer, T. Birke Helmholtz-Zentrum Berlin für Materialien und Energie A. Galdi University of Salerno A. Jankowiak, J. Dube Humboldt-Universität zu Berlin H. Huck Deutsches Elektronen-Synchrotron DESY I. Will Research Centre Dresden Rossendorf J. Knobloch University of Siegen
Abstract	The versatile 1.3 GHz superconducting radio-frequency (SRF) gun at HZB succesfully generated first photoemission beam from a high quantum efficiency (QE) multi-alkali photocathode. This demonstrates worldwide first beam operation of a SRF gun at high repetition rate and with a robust multi-alkali Na-based photoemissionn source. The setup of the test and all sub-systems is described. The latest results of SRF commissioning, cavity performance, photocathode QE measurements and beam parameter exploration campaigns is presented in the paper.
Paper	download: WECN2.pdf
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Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	27 May 2025
Revised	30 May 2025
Accepted	01 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-WECN2
Pages	1718-1721
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.