Study on QE Evolution of Cs2Te photocathodes in ELBE SRF GUN-II

Autor: Xiang, R., Arnold, A., Ma, S., Michel, P., Murcek, P., Schaber, J., Teichert, J., Ryzhov, A., Zwartek, P.
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: 13th Int. Particle Acc. Conf. (IPAC2022), 12.-17.06.2022, Bangkok, Thailand
Popis: The quality of the photocathodes is critical for the stability and reliability of the photoinjector’s operation. Thanks to the robust magnesium and Cs2Te photocathodes, SRFgun-II at HZDR has been proven to be a successful example in CW mode for high current user operation. In this contribution, we will present our observation of the QE evolution of Cs2Te photocathodes during SRF gun operation. The variables including substrate surface, film thickness, Cs/Te stoichiometric, multipacting, RF loading and charge extract are considered in the analysis.
Databáze: OpenAIRE