Author: Rak, A.O.
Paper Title Page
WEPWO042 Dubna-Minsk SRF Technology Development Status Report 2393
  • N.S. Azaryan, Ju. Boudagov, D.L. Demin, V.V. Glagolev, G. Shirkov, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  • M.A. Baturitsky, N.M. Shumeiko
    NC PHEP BSU, Minsk, Belarus
  • S.E. Demyanov, E.Yu. Kaniukov
    Scientific-Practical Materials Research Centre of the National Academy of Sciences of Belarus, Minsk, Belarus
  • A. Ermakov, W. Singer, X. Singer
    DESY, Hamburg, Germany
  • V.A. Karpovich, N.V. Liubetsky
    BSU, Minsk, Belarus
  • S.V. Kolosov, A.A. Kurayev, A.O. Rak, A.K. Sinitsyn
    Belarus State University of Informatics and Radioelectronics (BSUIR), Minsk, Belarus
  • S.I. Maximov, V.N. Rodionova
    Belarussian State University, Scientific Research Institute of Nuclear Problems, Minsk, Belarus
  • A. Parshuto, V.S. Petrakovsky, I.L. Pobol, A.I. Pokrovsky, S.V. Yurevich, A.Yu. Zhuravsky
    Physical-Technical Institute of the National Academy of Sciences of Belarus, Minsk, Belarus
  In 2011 Dubna-Minsk collaboration started an activity on the development and manufacture the series of 1.3 GHz superconducting Nb cavities in the enterprises in Belarus. The current status of this work is presented in this report. Main EM characteristics of the cavity were calculated and the shop drawings for cavity fabrication were developed. Two test-benches were assembled for RF-tests of the cavities at room temperature and at liquid helium temperature. The measured SWR was about 1.01 due to special matching device developed for that. This measurement technique was applied to the single-cell cavity from FNAL at power level nearby 10 mW. Measured resonant frequency was about 1.27 GHz, while the measured Q-factor was 2.8·104 at room temperature and more than 108 at liquid helium temperature. To evaluate mechanical properties of sheet Nb and of model materials (Cu and Al), a number of tests were made. Series of half-cells were fabricated of Al to test the technique of hydraulic deep-drawing that will be used in production of Nb cavities. The modes for electron-beam welding of sheet Nb were explored and the first welding seams were tested. The method of chemical treatment of cavities was also elaborated.  
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