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Persistent URL http://purl.org/net/epubs/work/53562032
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Record Id 53562032
Title Report on the Performance Characterisation of Caesium Telluride and Caesium Potassium Antimonide Photocathodes Manufactured at CERN
Abstract An analysis of four alkali and bi–alkali photocathodes grown at CERN was carried out at the STFC Daresbury Laboratory. The analysis involved measurements of surface composition via X–ray Photoelectron Spectroscopy (XPS), surface roughness via in–vacuum Scanning Tunnelling Microscopy (STM) and the Mean Transverse Energy (MTE) for each photocathode. Transverse Energy Distribution Curves (TEDC) were measured for each Cs–Te alkali metal photocathode at room and cryogenic temperatures and at room temperature for the Cs–K–Sb bi–alkali photocathode, and MTE extracted from this data. A further experiment was carried out to investigate photoemission from Cs–Te photocathodes at visible wavelengths which involved the ceasiation of an additional polycrystalline copper photocathode puck from the same batch as those used as substrates for the original photocathode growth at CERN.
Organisation ASTeC , ASTeC-AP , CI , STFC
Keywords CsTe, CsKSb, photocathode, TESS, energy spread, TEDC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Report DL Technical Reports ASTEC-AP-2020-001. 2020. CERN 2020 ASTeC Report.pdf 2020