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Schmidt, J.S.

Paper Title Page
MOP033 The New EBIS RFQ for BNL 139
 
  • M. Vossberg, B. Hofmann, A. Schempp, J.S. Schmidt, C. Zhang
    IAP, Frankfurt am Main
  • J.G. Alessi, D. Raparia, L. Snydstrup
    BNL, Upton, Long Island, New York
 
 

A new RFQ is being built as a part of the new EBIS-linac at BNL. The RFQ accepts highly charged ions from the EBIS ion source with energy of 17 keV/u and ion currents of up to 10 mA. The operation frequency will be 100.625 MHz . The design had been optimized to get a rather short structure with LRFQ=3.1 m with moderate electrode voltages of UQ = 70 kV. The resonant insert has a cooled base plate and solid stems and vane-electrodes. The mechanical design is very stiff, with a precise base-structure. The top lid along the RFQ allows installation, alignment, inspection and maintenance. After the mechanical alignment of the electrodes the longitudinal electrode voltage distribution will be adjusted with tuning plates between the stems. The properties of the RFQ, the results of the tuning and the status of the project will be discussed.