Speaker
Dmitry Bazyl
(Deutsches Elektronen-Synchrotron DESY)
Description
The thermal regime of a copper photocathode integrated into a superconducting radio-frequency gun is investigated under conditions of high-power laser excitation. Numerical estimates are presented for optical heat loads up to 10 W, required for the 1 MHz, 100 µA continuous-wave operation of the European XFEL in regimes of mid-range quantum efficiency of copper. It is shown that the thermodynamic limit of the system is governed by the heat transfer dynamics at the copper-superfluid helium interface.
Funding Agency
Work performed in the framework of R&D for future accelerator operation modes at the European XFEL and financed by the European XFEL GmbH
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Author
Dmitry Bazyl
(Deutsches Elektronen-Synchrotron DESY)