Author: Karamysheva, G.A.
Paper Title Page
WEPS085 Deveopment of the IBA-JINR Cyclotron C235-V3 for Dmitrovgrad Hospital Center of the Proton Therapy 2706
 
  • E. Syresin, G.A. Karamysheva, M.Y. Kazarinov, S.A. Kostromin, N.A. Morozov, A.G. Olshevsky, V.M. Romanov, E. Samsonov, N.G. Shakun, G. Shirkov, S.G. Shirkov
    JINR, Dubna, Moscow Region, Russia
  • M. Abs, A. Blondin, P. Cahay, Y. Jongen, W.J.G.M. Kleeven, S. Zaremba
    IBA, Louvain-la-Neuve, Belgium
 
  The approval of the Dmitrovgrad project - the first Russian hospital center of the proton therapy was announced in 2010. The JINR-IBA collaboration have developed and constructed the proton cyclotron C235-V3 for this center. We plan to assemble this cyclotron in JINR in 2011 and perform tests with the extracted proton beam in 2012. This cyclotron is an essentially modified version of IBA C235 cyclotron. Modification of the extraction system is aim of new C235-V3 cyclotron. The new extraction system was constructed and tested. The experimentally measured extraction efficiency was improved from 60% for the old system to 77% for the new one. The new field mapping system was developed for the C235-V3 cyclotron. It system consists of the axial field mapping system and an additional system applied for radial field Br measurements. One of the goals of the cyclotron improvement is the modification of the sector spiral angle for reducing of coherent beam losses at acceleration. The coherent beam displacement from the median plane is defined by the vertical betatron tune Qz. An increase of the vertical betatron tune permits to reduce the coherent losses at proton acceleration.  
 
THPS077 Compact Superconducting Synchrocyclotrons at Magnetic Field Level of up to 10 T for Proton and Carbon Therapy 3610
 
  • A.I. Papash
    MPI-K, Heidelberg, Germany
  • G.A. Karamysheva
    JINR, Dubna, Moscow Region, Russia
  • L.M. Onischenko
    JINR/DLNP, Dubna, Moscow region, Russia
 
  Based on brief analysis of accelerators widely used for proton-ion therapy and patient cure during last 20 years the feasibility and importance of compact superconducting synchrocyclotrons operating at magnetic field level up to 10 T is outlined. The main component of modern commercial facility for proton-ion therapy is an isochronous cyclotron with room temperature or superconducting coils accelerating protons up to 250 MeV as well as synchrotron accelerating carbon ions up to 400 MeV/A. Usually ions are delivered from accelerator into the treatment room by transport lines. Irradiation is done by system of pointed to the patient magnets, collimators, energy degraders which are attached to the rotating Gantry. To greatly reduce price of facility (almost in one order of magnitude) and to simplify operational conditions of hospital personal it is proposed to provide iso-centric rotation of compact superconducting synchrocyclotron around the patient. Main physical and technical parameters are described in the paper.  
 
WEPC009 Design of an Antiproton Injection and Matching Beam Line for the AD Recycler Ring 2019
 
  • O. Karamyshev, G.A. Karamysheva
    MPI-K, Heidelberg, Germany
  • O. Karamyshev, A.I. Papash
    JINR, Dubna, Moscow Region, Russia
  • M.R.F. Siggel-King, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
 
  Funding: Work supported by STFC, the Helmholtz Association and GSI under contract VH-NG.328.
A small antiproton recycler ring (AD-Rec) for use in the MUSASHI beamline at the CERN AD has been designed by the QUASAR Group for operation at energies between 3 and 30 keV. A highly efficient beam line for capturing the beam after extraction from the trap, transporting and injecting it into the AD Rec is very important to minimize losses and full the ring up to its space charge limit. In this contribution, the beam optical and mechanical design of the injector is presented.
 
 
WEPC010 Investigations into Efficient Extraction and Acceleration of Beams from Ion Traps 2022
 
  • O. Karamyshev, G.A. Karamysheva
    MPI-K, Heidelberg, Germany
  • O. Karamyshev, A.I. Papash
    JINR, Dubna, Moscow Region, Russia
  • M.R.F. Siggel-King, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
 
  Funding: Work supported by STFC, the Helmholtz Association and GSI under contract VH-NG.328
A number of exotic ion species, such as for example radioactive isotopes or antiprotons, are highly desirable at very low energies of some tens of keV for fundamental studies. In order to obtain cooled beams with low emittance and low momentum spread, these particles are often first captured in an ion trap, cooled and then extracted and accelerated before being used in experiments. The extraction mechanism and subsequent beam handling impacts critically on the final beam quality. In this contribnution, an optimized scheme for efficient beam extraction and acceleration from ion traps is presented. Field maps from different existing ion trap setups, such as for example the Musashi trap at CERN, are used as a basis for simulation studies into the beam dynamics. Input and final beam emittances are analyzed as a function of the extraction and acceleration field geometries and the performance of different possible scenarios is directly compared.
 
 
WEPC065 Design of a Low Energy Ion Beam Facility* 2169
 
  • M.R.F. Siggel-King, C.P. Welsch
    Cockcroft Institute, Warrington, Cheshire, United Kingdom
  • O. Karamyshev
    JINR/DLNP, Dubna, Moscow region, Russia
  • G.A. Karamysheva
    MPI-K, Heidelberg, Germany
  • A.I. Papash
    JINR, Dubna, Moscow Region, Russia
  • M.R.F. Siggel-King
    The University of Liverpool, Liverpool, United Kingdom
 
  Funding: Work supported by STFC, the EU under GA-PITN-215080, the Helmholtz Association and GSI under VH-NG-328.
A small electrostatic ring, and associated electrostatic injection beamlines, are being designed and developed. The ring will make possible a variety of experiments using a choice of many types of recirculating ions (e.g., from protons, H-, and antiprotons up to and including large charged biomolecules). A reaction microscope will be incorporated into the ring to enable differential ionization experiments between the recirculating ion beam and gas jet targets. Two injection sections have been designed to cover a variety of ion sources. The facility will be portable to enable it to be moved between facilities and beamlines and it will be unique due to its combination of design elements, flexible beam properties, energy (ca 3-30 keV) and type of circulating particles. In this paper, we give an update on this project.