NDLI: Technical developments on reduced-/spl beta/ superconducting cavities at CERN

Content Provider	IEEE Xplore Digital Library
Author	Aberle, O. Boussard, D. Calatroni, S. Chiaveri, E. Haebel, E. Hanni, R. Losito, R. Marque, S. Tuckmantel, J.
Copyright Year	1999
Description	Author affiliation: CERN, Geneva, Switzerland (Aberle, O.)
Abstract	Several authors proposed the construction of superconducting proton linacs using the LEP2 cavities once LEP will be decommissioned. However only a fraction (about half) of these cavities can be used as they are for the high-energy part (/spl beta//spl sim/1) of such a linac, the low energy part requiring the development of accelerating structures optimized for lower values of the particle velocity. At CERN an R&D programme on reduced-/spl beta/ single-cell cavities started in 1996 in order to study and explore the limits of the technology successfully used for the production of LEP2 cavities (copper cavities niobium-plated using the magnetron sputtering technique). Four different geometries were extensively investigated, each representing part of a multicell structure optimized for particles having /spl beta/=0.48, /spl beta/=0.625, /spl beta/=0.66 and /spl beta/=0.8 respectively. The results were encouraging for the last two types and therefore a new phase of R&D aimed at the production of multicell cavities for /spl beta/=0.66 and /spl beta/=0.8 was started. The goal is to demonstrate simultaneously the feasibility of such cavities and the possibility of producing them by low-cost modification of LEP cavities. In the paper, after a brief review of the results obtained on the single-cell cavities, we present in more detail the procedure for the transformation of the LEP cavities, which should allow a realistic estimate of the costs of such operation.
Starting Page	949
Ending Page	951
File Size	440078
Page Count	3
File Format	PDF
ISBN	0780355733
DOI	10.1109/PAC.1999.795410
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-03-27
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Linear accelerators Radio frequency Research and development Protons Acceleration Production Copper Superconducting magnets Sputtering Costs
Content Type	Text
Resource Type	Article

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