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A high-average power (kW) infrared (IR) free-electron laser (FEL) is currently being commissioned for the Jefferson Laboratory FEL User Facility. The IR FEL is driven by a unique superconducting rf linac which is recirculated to recover electron beam power that is not radiated in the FEL. The design and installation of the vacuum system for the FEL involved particular attention to minimizing particulate contamination which could cause problems with the superconducting acceleration cavities and the high power FEL optics. Particulate contamination levels of all vacuum components were monitored during the cleaning process using laser scattering. Cleaning, transport, and installation procedures were developed to minimize the contamination of the complete system. We will summarize a data base we compiled of particulate contamination levels of the various components installed in the FEL vacuum system. © 1999 American Vacuum Society.
Published in:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films
(Volume:17
,
Issue:
4
)
Date of Publication: Jul 1999
- Page(s):
- 2113 - 2118
- ISSN :
- 0734-2101
- Digital Object Identifier :
- 10.1116/1.581735
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jul 1999
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