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Superconducting Niobium Deflectors

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5 Author(s)
Aggus, J.R. ; Brookhaven National Laboratory Upton, New York 11973 ; Bauer, W. ; Giordano, S. ; Hahn, H.
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The study of S-Band superconducting niobium cavities is being carried out for application to long-pulse rf beam separators in the momentum range of the AGS, whereas, X-Band frequencies are being considered for the NAL accelerator. Results for a 5-cell S-band prototype are: a peak field of 410 G, corresponding to an equivalent deflecting field of over 2 MV/m, and a loss improvement factor of 2 × 105. The fabrication and post-fabrication treatments are described. Perturbation measurements to determine deflector parameters are summarized. A new type of mode stabilizer is suggested. A 7-cell X-Band deflector is under construction.

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Nuclear Science, IEEE Transactions on  (Volume:20 ,  Issue: 3 )