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Vacuum predictions and measurements for an internal Pellet Target at a storage ring
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Nuclear and Particle Physics.
Uppsala University, The Svedberg Laboratory.
Uppsala University, The Svedberg Laboratory.
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2008 (English)In: Vacuum, ISSN 0042-207X, E-ISSN 1879-2715, Vol. 82, no 6, 645-650 p.Article in journal (Refereed) Published
Abstract [en]

Measurements with low Z targets at internal experiments typically imply a gas load which deteriorates the vacuum of a storage ring. Future experiments need reliable estimates for the expected vacuum conditions in order to design 4π detectors closely surrounding the interaction area.

We present a method for the calculation of the resulting vacuum of such a complex system using a Pellet Target. In order to test the method, a vacuum system with diagnostic tools has been set-up and a Pellet Target was operated under realistic conditions. The results for the absolute vacuum agree within factors of two with the expected pressures.

Place, publisher, year, edition, pages
2008. Vol. 82, no 6, 645-650 p.
Keyword [en]
internal target, pellet target, outgassing, vacuum measurement, vacuum model calculation, storage ring
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-16894DOI: 10.1016/j.vacuum.2007.10.005ISI: 000253821000014OAI: oai:DiVA.org:uu-16894DiVA: diva2:44665
Available from: 2008-06-09 Created: 2008-06-09 Last updated: 2017-12-08Bibliographically approved

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Johansson, TordWiedner, Ulrich

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