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[en] The electron cloud is a possible heat source in the superconducting undulator (SCU) designed for the Advanced Photon Source (APS), a 7-GeV electron synchrotron radiation source at Argonne National Laboratory. In electron cloud generation extensive research has been done, and is continuing, to understand the secondary electron component. However, little work has been done to understand the parameters of photoemission in the accelerator environment. To better understand the primary electron generation in the APS; a beamline at the Australian Light Source synchrotron was used to characterize two samples of the Al APS vacuum chamber. The total photoelectron yield and the photoemission spectra were measured. Four parameters were varied: surface roughness, sample temperature, incident photon energy, and incident photon angle, with their results presented here. (author)
Source
Cimino, R; Rumolo, Giovanni; Zimmermann, Frank (European Organization for Nuclear Research, Geneva (Switzerland)) (eds.); CERN - European Organization for Nuclear Research, Geneva (Switzerland); 286 p; ISBN 978-92-9083-386-4; 
; 2013; p. 95-98; Joint INFN-CERN-EuCARD-AccNet Workshop on Electron-Cloud Effects; La Biodola, Isola d'Elba (Italy); 5-9 Jun 2012; ISSN 0007-8328; ; Available on-line: http://cds.cern.ch/record/1563412/files/arXiv:1307.5133.pdf; Available on-line: http://cds.cern.ch/record/1529710/files/arXiv:1403.3292.pdf; Country of input: International Atomic Energy Agency (IAEA); DOI: 10.5170/CERN-2013-002.95; Copyright (c) 2013 CERN; This is an open access publication distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
; 2013; p. 95-98; Joint INFN-CERN-EuCARD-AccNet Workshop on Electron-Cloud Effects; La Biodola, Isola d'Elba (Italy); 5-9 Jun 2012; ISSN 0007-8328; ; Available on-line: http://cds.cern.ch/record/1563412/files/arXiv:1307.5133.pdf; Available on-line: http://cds.cern.ch/record/1529710/files/arXiv:1403.3292.pdf; Country of input: International Atomic Energy Agency (IAEA); DOI: 10.5170/CERN-2013-002.95; Copyright (c) 2013 CERN; This is an open access publication distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.