Speaker
David Juarez-Lopez
(Deutsches Elektronen-Synchrotron)
Description
The photoinjectors of FLASH at DESY (Hamburg, Germany) and the European XFEL are operated by laser driven RF-guns. In both facilities cesium telluride (Cs$_2$Te) photocathodes are successfully used since several years. We present recent data on the lifetime and quantum efficiency (QE) of the current photocathode at FLASH #105.2, operated before and after a long shutdown. In addition, data for the cathodes that recently have been exchanged at the European XFEL will be presented.
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Primary author
David Juarez-Lopez
(Deutsches Elektronen-Synchrotron)
Co-authors
Daniele Sertore
(Istituto Nazionale di Fisica Nucleare)
Frank Brinker
(Deutsches Elektronen-Synchrotron)
Laura Monaco
(Istituto Nazionale di Fisica Nucleare)
Dr
Siegfried Schreiber
(Deutsches Elektronen-Synchrotron)
Sven Lederer
(Deutsches Elektronen-Synchrotron)
