Author: Ostreinov, Y.M.
Paper Title Page
TUPSB52 Measurement of the Argon Ion Current Accompanying at the Accelerating Source of Epithermal Neutrons 334
 
  • Ia.A. Kolesnikov, Y.M. Ostreinov, I.M. Shchudlo, S.Yu. Taskaev
    BINP SB RAS, Novosibirsk, Russia
  • P.D. Ponomarev, S. Savinov
    BINP, Novosibirsk, Russia
  
  Funding: The reported study was funded by the Russian Foundation for Basic Research, project no. 19-32-90118.
For the development of a promising method for the treatment of malignant tumors - boron neutron capture therapy - the accelerator-based epithermal neutron source has been proposed and created in the Budker Institute of Nuclear Physics. Argon ions formed during stripping of a beam of negative hydrogen ions to protons are accelerated and, in parallel with the proton beam, are transported along the high-energy beam line of the facility. Depending on the relative number of argon ions, their effect can vary from negligible to significant, requiring their suppression. In this work, the current of argon ions reaching the beam receiver in the horizontal high-energy beam line of the accelerator was measured. It was determined that the argon beam current accompanying the proton beam is 2000 times less than the proton beam current. This makes it possible not to apply the proposed methods of its suppression. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-TUPSB52  
About • Received ※ 19 September 2021 — Revised ※ 27 September 2021 — Accepted ※ 29 September 2021 — Issued ※ 01 October 2021
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WEPSC32 Proton Beam Size Diagnostics Used in the Vacuum Insulated Tandem Accelerator 404
 
  • Ia.A. Kolesnikov, M.I. Bikchurina, D.A. Kasatov, A.M. Koshkarev, A.N. Makarov, Y.M. Ostreinov, I.M. Shchudlo, E.O. Sokolova, I.N. Sorokin, S.Yu. Taskaev
    BINP SB RAS, Novosibirsk, Russia
  • T.A. Bykov
    Budker INP & NSU, Novosibirsk, Russia
  • S. Savinov
    BINP, Novosibirsk, Russia
  
  Funding: The research was supported by Russian Science Foundation, grant No. 19-72-30005.
For the development of a promising method for the treatment of malignant tumors - boron neutron capture therapy - the accelerator-based epithermal neutron source has been proposed and created in the Budker Institute of Nuclear Physics. After the acceleration phase, a proton beam with an energy of up to 2.3 MeV and a current of up to 10 mA is transported in a high-energy beam line. With a beam size of 1 cm2, its power density can reach tens of kW/cm2. Diagnostics of the size of such a powerful beam is a nontrivial task aimed at increasing the reliability of the accelerator. The paper presents such diagnostics as: 1) the use of the blister formation boundary during the implantation of protons into the metal; 2) the use of thermocouples inserted into the lithium target; 3) the use of the melting boundary of the lithium layer when it is irradiated with a beam; 4) the use of the activation of the lithium target by protons; 5) the use of video cameras; 6) the use of an infrared camera; 7) the use of the luminescence effect of lithium when it is irradiated with protons; 8) the use of collimators with a small diameter of 1-2 mm; 9) the use of the method of two-dimensional tomography*.
* M. Bikchurina, et al 2D tomography of the proton beam in the vacuum-insulated tandem accelerator. These proceedings. 		 
DOI • reference for this paper ※ doi:10.18429/JACoW-RuPAC2021-WEPSC32  
About • Received ※ 22 September 2021 — Revised ※ 29 September 2021 — Accepted ※ 09 October 2021 — Issued ※ 19 October 2021
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