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Persistent URL http://purl.org/net/epubs/work/50543484
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Record Id 50543484
Title Performance characterisation of a Cu(100) single-crystal photocathode
Abstract The search for high performance photocathode electron sources is a priority in the accelerator science community. The surface characteristics of a photocathode define important factors of the photoemission including the intrinsic emittance, the quantum efficiency and the work function of the photocathode. These factors in turn define the electron beam performance which are measurable as emittance, brightness and energy spread. ASTeC’s Multiprobe (SAPI) system has been used to characterise and analyse photocathode performance using multiple techniques including XPS, STM, and LEED imaging, and their Transverse Energy Spread Spectrometer (TESS) to measure mean transverse energy (MTE). Characterisation measurements will be presented for a Cu (100) single–crystal photocathode sample, with data from SAPI confirming the crystallographic face and showing surface composition and roughness, supported by data from TESS showing the photocathode electron beam energy spread.
Organisation ASTeC , ASTeC-AP , STFC
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Language English (EN)
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Paper In Conference Proceedings In 12th International Particle Accelerator Conference (IPAC21), Campinas, Brazil, 24-28 May 2021, (2021). https://accelconf…/wepab112_poster.pdf 2021