Abstract
Towards the operation of Cs-K-Sb photocathodes in superconducting rf photoinjectors
Highlights
Photocathodes need to be developed as electron sources in photoinjectors for high current and continuous wave (CW) operation of energy recovery linac (ERL) and free electron laser (FEL) light sources [1]
One of the key challenges is to setup the prototype of the superconducting radio frequency (SRF) photoinjector, which defines the achievable brightness of the electron beam of the ERL
A two-step growth procedure of Cs-K-Sb photocathodes was developed with respect to our preparation system and systematically studied by x-ray photoelectron spectroscopy (XPS)
Summary
Photocathodes need to be developed as electron sources in photoinjectors for high current and continuous wave (CW) operation of energy recovery linac (ERL) and free electron laser (FEL) light sources [1]. Photocathodes for these applications require low intrinsic emittance to achieve the necessary beam brightness. Photocathodes grown by alkali metal codeposition on the antimony layer was carried out and is discussed in Sec. III B. This is a critical area of research as there continues to be lively discussion within the accelerator physics photocathode community [17,18] on the topic of operation under cryogenic temperatures.
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