CERN Accelerating science

EuCARD Conference Paper
Report number	EuCARD-CON-2011-046
Date(s), location
Imprint	2011
Title	Pulsed Mode Operation and Longitudinal Parameter Measurement of the Rossendorf SRF Gun
Author(s)	Teichert, J (Helmholtz-Zentrum, Dresden-Rossendorf) ; Arnold, A (Helmholtz-Zentrum, Dresden-Rossendorf) ; Buettig, H (Helmholtz-Zentrum, Dresden-Rossendorf) ; Justus, M (Helmholtz-Zentrum, Dresden-Rossendorf) ; Lehnert, U (Helmholtz-Zentrum, Dresden-Rossendorf) ; Michel, P (Helmholtz-Zentrum, Dresden-Rossendorf) ; Schamlott, A (Helmholtz-Zentrum, Dresden-Rossendorf) ; Schneider, Ch (Helmholtz-Zentrum, Dresden-Rossendorf) ; Schurig, R (Helmholtz-Zentrum, Dresden-Rossendorf) ; Xiang, R (Helmholtz-Zentrum, Dresden-Rossendorf) ; Klemz, G (Max Born Inst., Berlin) ; Kamps, T (Helmholtz-Zentrum, Berlin) ; Rudolph, J (Helmholtz-Zentrum, Berlin) ; Schenk, M (Helmholtz-Zentrum, Berlin) ; Will, I (Max Born Inst., Berlin)
WP	10: SC RF technology for higher intensity proton accelerators and higher energy electron linacs
Task	10.7: SCRF Gun at ELBE
Abstract	The Rossendorf SRF gun with a 3½ cell cavity has been operated since 2007. It has produced CW beam with the electron energy of 3 MeV and the average current up to 16 μA. The electron beam of the gun has been successfully injected into the ELBE superconducting linac since 2010. The Nb cavity has shown constant quality during the operation and for the Cs2Te photocathode life time of months could be obtained. Recently the gun started to run in the pulsed mode with higher gradient. The longitudinal Parameters have been measured in this mode. The dark current arose from the high gradient is studied. The main field emission source has been found to be the half cell. In this paper the new status of the SRF gun will be presented, and the latest results of the beam experiments will be discussed.
Presented at	2nd International Particle Accelerator Conference, San Sebastian, Spain, 4 - 9 Sep 2011, pp.MOPC081

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