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Persistent URL
http://purl.org/net/epubs/work/53562032
Record Status
Checked
Record Id
53562032
Title
Report on the Performance Characterisation of Caesium Telluride and Caesium Potassium Antimonide Photocathodes Manufactured at CERN
Contributors
LB Jones (STFC Daresbury Lab.)
,
TCQ Noakes (STFC Daresbury Lab.)
,
DP Juarez-Lopez
,
LAJ Soomary (STFC Daresbury Lab., and Liverpool Univ.)
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
Funding Information
Related Research Object(s):
Licence Information:
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
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