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Persistent URL http://purl.org/net/epubs/work/53462098
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Record Id 53462098
Title The Alkali-Metal Photocathode Preparation Facility at Daresbury Laboratory: First Caesium Telluride Deposition Results
Abstract Fourth generation light sources require high brightness electron beams. To achieve this a photocathode with a high quantum efficiency and low intrinsic emittance is required, which is also robust with a long operational lifetime and low dark current. Alkali-metal photocathodes have the potential to fulfil these requirements, so are an important research area for the accelerator physics community. STFC Daresbury Laboratory are currently commissioning the Alkali-metal Photocathode Preparation Facility (APPF) which will be used to grow alkali photocathodes. Photocathodes produced by the APPF will be analysed using Daresbury Laboratory’s existing Multiprobe system and the Transverse Energy Spread Spectrometer (TESS). Multiprobe can perform a variety of surface analysis techniques while the TESS can measure the Mean Transverse Energy of a photocathode from its Transverse Energy Distribution Curve over a large range of illumination wavelengths. We present an overview on our current progress in the commissioning and testing of the APPF, the results from the first Cs-Te deposition and detail the work planned to facilitate the manufacture of Cs2Te photocathodes for the CLARA accelerator.
Organisation ASTeC , ASTeC-AP , CI , STFC
Funding Information STFC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Conference Proceedings 13th International Particle Accelerator Conference (IPAC2022), Bangkok, Thailand, 12-17 Jun 2022. JACOW, 2022 https://accelconf…papers/thpopt044.pdf 2022