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@inproceedings{churn:ipac2022-thpopt044, author = {H.M. Churn and C. Benjamin and L.B. Jones and T.C.Q. Noakes}, title = {{The Alkali-Metal Photocathode Preparation Facility at Daresbury Laboratory: First Caesium Telluride Deposition Results}}, booktitle = {Proc. IPAC'22}, % booktitle = {Proc. 13th International Particle Accelerator Conference (IPAC'22)}, pages = {2693--2696}, eid = {THPOPT044}, language = {english}, keywords = {cathode, electron, MMI, emittance, FEL}, venue = {Bangkok, Thailand}, series = {International Particle Accelerator Conference}, number = {13}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {07}, year = {2022}, issn = {2673-5490}, isbn = {978-3-95450-227-1}, doi = {10.18429/JACoW-IPAC2022-THPOPT044}, url = {https://jacow.org/ipac2022/papers/thpopt044.pdf}, 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***.}}, }