WEOYA —  Room Temperature and Superconducting Linacs   (24-Oct-18   14:50—15:50)
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WEOYA01 Mechanical Design of Single Spoke Resonator Type-2 (SSR2) Superconducting Cavity for RISP 125
  • M.O. Hyun, Y.W. Jo, H.C. Jung, Y. Kim
    IBS, Daejeon, Republic of Korea
  Funding: This paper was supported by the Rare Isotope Science Project (RISP), which is funded by the Ministry of Science and ICT (MSIT) and National Research Foundation (NRF) of the Republic of Korea.
Superconducting linear accelerator and many beam experimental devices for the future of basic science research in Korea are making and preparing installation in Sindong linac tunnel north side of Daejeon, Korea. The key component of superconducting linac is the superconducting cavity and RISP linac has four types of superconducting cavities - quarter-wave, half-wave, and single spoke resonator type-1 and 2. In this paper, we introduce about the initial RF/EM design of single spoke resonator type-2 (SSR2) superconducting (SC) cavity, and explain about mechanical design. After explanation, we analyze mechanical design parameters of SSR2 SC cavity using ANSYS 18.0 structural solver and RRR 300 pure-niobium and stainless steel material properties.
slides icon Slides WEOYA01 [3.532 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOYA01  
About • paper received ※ 21 October 2018       paper accepted ※ 11 December 2018       issue date ※ 05 November 2019  
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WEOYA02 First heavy ion beam acceleration with a superconducting multi gap CH-cavity 129
  • M. Basten, M. Busch, H. Podlech, M. Schwarz
    IAP, Frankfurt am Main, Germany
  • K. Aulenbacher, F.D. Dziuba, V. Gettmann, T. Kürzeder, M. Miski-Oglu
    HIM, Mainz, Germany
  • W.A. Barth, M. Heilmann, A. Rubin, A. Schnase, S. Yaramyshev
    GSI, Darmstadt, Germany
  In the future a new superconducting (sc) continuous wave (cw) high intensity heavy ion Linac should provide ion beams with a max. beam energy above the coulomb barrier for the Super Heavy Element (SHE) program at GSI Helmholtzzentrum für Schwerionenforschung. As a first step a newly developed superconducting 15-gap Crossbar H-cavity (CH-cavity) operated at 217 MHz has been successfully tested with heavy ion beam up to the design beam energy of 1.85 MeV/u for the first time. The design energy gain of 3.5 MV within a length of less than 70 cm has been validated with heavy ion beams of up to 1.5 particle mueA. The measured beam parameters showed excellent beam quality, while a dedicated beam dynamics layout provides beam energy variation between 1.2 and 2.2 MeV/u. The beam commissioning is a milestone of the R&D work of Helmholtz Institute Mainz (HIM) and GSI in collaboration with Goethe University Frankfurt (GUF) and the first step towards a sc heavy ion cw-Linac with variable beam energy. The next two CH-cavities have already tested under cryogenic conditions. The results of the first successful heavy ion beam acceleration with a superconducting CH-cavity will be presented.  
slides icon Slides WEOYA02 [8.468 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOYA02  
About • paper received ※ 18 October 2018       paper accepted ※ 25 October 2018       issue date ※ 05 November 2019  
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WEOYA03 Design and Beam Commissioning of the LEAF-RFQ 135
  • L. Lu, Y. He, H. Jia, W. Ma, L.B. Shi, L.T. Sun, L.P. Sun, Y. Yang, Y.H. Zhai, H.W. Zhao
    IMP/CAS, Lanzhou, People’s Republic of China
  An 81.25 MHz continuous wave (CW) radio frequency quadrupole (RFQ) accelerator has been developed and fabricated for the Low Energy Accelerator Facility (LEAF) by the Institute of Modern Physics (IMP) of the Chinese Academy of Science (CAS). The operation frequency is 81.25 MHz and the inter-vane voltage is a constant of 70 kV. It took about 44 hours continuous conditioning to reach RF power of 75 kW which is 1.1 time of the maximum designed operation power, and the CW operation of He+ beam and N2+ beam had successfully accelerated to the designed energy of 0.5 MeV/u. Both the results of the high power test and the beam test will be presented in this paper.  
slides icon Slides WEOYA03 [10.750 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-HIAT2018-WEOYA03  
About • paper received ※ 20 October 2018       paper accepted ※ 23 October 2018       issue date ※ 05 November 2019  
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