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Beam heat load and pressure rise in a could vacuum chamber

Casalbuoni, S. 1; Grau, A. 1; Hagelstein, M. 1; Rossmanith, R. 1; Zimmermann, F.; Kostka, B.; Mashkina, E.; Steffens, E.; Bernhard, A. ORCID iD icon 2; Wollmann, D. 2; Baumbach, T. 2
1 Forschungszentrum Karlsruhe (FZKA)
2 Universität Karlsruhe (TH)


The beam heat load and the pressure in the vacuum chamber of the cold bore superconducting undulator installed at ANKA (ANgstrom source KArlsruhe) have been monitored for almost two years. Possible sources of the observed heat load could be synchrotron radiation from upstream magnets, image currents, electron and ion bombardment. In this paper, the various possible contributions to the heat load are discussed and compared with experimental results. The dynamic pressure increases nonlinearly with the average beam current. The current where it assumes a maximum varies both with the bunch intensity and with the initial vacuum pressure. A correlation between the heat load and the dynamic pressure has been observed. This study suggests that electron bombardment could explain the beam heat load and pressure rise observed for a bunch length of 10 mm.

Verlagsausgabe §
DOI: 10.5445/IR/1000017945
Veröffentlicht am 18.04.2018
DOI: 10.1103/PhysRevSTAB.10.093202
Zitationen: 32
Web of Science
Zitationen: 17
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Universität Karlsruhe (TH) – Einrichtungen in Verbindung mit der Universität (Einrichtungen in Verbindung mit der Universität)
Institut für Synchrotronstrahlung (ISS)
Laboratorium für Applikationen der Synchrotronstrahlung (LAS)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2007
Sprache Englisch
Identifikator ISSN: 1098-4402, 2469-9888
KITopen-ID: 1000017945
HGF-Programm 55.51.21 (POF I, LK 02) SpecialFeatures im ANKA-Labor Röntgent.
Erschienen in Physical review accelerators and beams
Verlag American Physical Society (APS)
Band 10
Heft 9
Seiten Art.Nr. 093202
Nachgewiesen in Dimensions
Web of Science
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