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Sharkov, B.Y.

Paper Title Page
MOPCH090 ITEP-TWAC Status Report 243
 
  • N.N. Alexeev, D.G. Koshkarev, B.Y. Sharkov
    ITEP, Moscow
  
  Three years of successful operation the ITEP-TWAC facility delivers proton and ion beams in several modes of acceleration and accumulation of by using the multiple charge exchange injection technique*. Substantial progress is achieved in output ion beam current intensity of the linear injector I3, in intensity of the buster synchrotron UK, in efficiency increasing of ion beam stacking and longitudinal compression in the storage ring U10. The machine status analysis and current results of activities aiming at subsequent improvement of beam parameters for extending beam technology applications are presented.

*N. Alexeev et al. Laser and Particle Beams (2002) V 20, N3, 385-392.

 
TUPLS053 Beam Dynamics of a High Current IH-DTL Structure for the TWAC Injector 1615
 
  • S. Minaev, T. Kulevoy, B.Y. Sharkov
    ITEP, Moscow
  • U. Ratzinger, R. Tiede
    IAP, Frankfurt-am-Main
  
  A powerful ion injector based on a laser ion source is needed for an efficient operation of the Tera Watt Accumulator (TWAC) complex including a heavy ion synchrotron and a storage ring, which is under progress now at ITEP, Moscow. The Interdigital H-type drift tube linac (IH-DTL) structure operating at 162 MHz is proposed for the second stage of the injector linac behind of a 81 MHz RFQ. Consisting of independently driven sections with inter-tank quadrupole triplet focusing, this structure will accelerate highly stripped ions with charge-to-mass ratios above 1/3 in the energy range from 1.57 MeV/u at the RFQ exit to 7 MeV/u. Beam currents up to 100 mA are expected for medium ions like Carbon or Aluminum. Since the rf frequency is duplicated at the entrance of the IH-DTL in order to reduce size as well as power consumption, space charge effects are dominant at full current. Beam dynamics and structure parameters are discussed in detail.  
TUPLS055 First Section of a 352 MHz Prototype Alvarez DTL Tank for the CERN SPL 1621
 
  • S.V. Plotnikov, A.P. Durkin, D. Kashinskiy, V.A. Koshelev, T. Kulevoy, S. Minaev, V. Pershin, B.Y. Sharkov, V. Skachkov
    ITEP, Moscow
  • V.F. Basmanov, V.A. Demanov, I.D. Goncharov, E.S. Mikhailov, N.I. Moskvin, S.T. Nazarenko, V.S. Pavlov, V.V. Porkhaev, V.T. Punin, A.V. Telnov, V.N. Yanovsky, N.V. Zavyalov, S.A. Zhelezov
    VNIIEF, Sarov (Nizhnii Gorod)
  
  In the Linac4/SPL projects at CERN, 352 MHz 30 mA DTL Alvarez accelerating structure will be used to accelerate protons between 3 and 40 MeV. The R&D for the development of a prototype structure for the energy range from 3 to 10 MeV is taking place jointly at ITEP and VNIIEF. The design of this 2.7 m Alvarez tank containing 27 drift tubes is described in this document. Results of calculations of the section parameters are presented. One of the main features of the design is the use of permanent magnets made of SmCo5 alloy as quadrupole focusing lenses (PMQ) inside the drift tubes. Details of the experimental PMQ-equipped drift tube are described.