Author: Kobets, V.V.
Paper Title Page
WECAMH02 Light Ion Linear Accelerator up to 7 AMeV for NICA 68
 
  • H. Höltermann, M. Basten, B. Koubek, H. Podlech, U. Ratzinger, A. Schempp, R. Tiede
    BEVATECH, Frankfurt, Germany
  • A.M. Bazanov, A.V. Butenko, D.E. Donets, B.V. Golovenskiy, A. Govorov, V.V. Kobets, A.D. Kovalenko, K.A. Levterov, D.A. Lyuosev, A.A. Martynov, D.O. Ponkin, K.V. Shevchenko, I.V. Shirikov, A.O. Sidorin, A.V. Smirnov, E. Syresin, G.V. Trubnikov
    JINR, Dubna, Moscow Region, Russia
  • C. K. Kampmeyer, H. Schlarb
    DESY, Hamburg, Germany
 
  In the frame of the NICA ion collider upgrade a new light ion frontend linac (LILac) for protons and ions with a mass to charge ration of up to 3 will be built. LILac will consist out of 3 parts: 1. a normal conducting Linac up to 7 AMeV, 2. a normal conducting proton energy upgrade up to 13 AMeV, 3. a superconducting section. The normal conducting Linac up to 7 AMeV will be built in collaboration between JINR and Bevatech GmbH. The technical design of LILac up to 7 AMeV is discussed in this paper.  
slides icon Slides WECAMH02 [23.545 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-WECAMH02  
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TUPSA58 A Method for Measuring the Positron Lifetime in Solid Matter with a Continuous Positron Beam 267
 
  • A.A. Sidorin, E.V. Ahmanova, A.G. Kobets, V.V. Kobets, I.N. Meshkov, O. Orlov
    JINR, Dubna, Moscow Region, Russia
  • M.K. Eseev
    NArFU, Arhangelsk, Russia
  • V.I. Hilinov, P. Horodek, I.N. Meshkov, K. Siemek
    JINR/DLNP, Dubna, Moscow region, Russia
  • P. Horodek, K. Siemek
    IFJ-PAN, Kraków, Poland
  • A.G. Kobets
    IERT, Kharkov, Ukraine
  • I.N. Meshkov
    Saint Petersburg State University, Saint Petersburg, Russia
 
  The report proposes the scheme and design of the setup for formation a continuous monochromatic positron flux with controlled time of arrival at the target, independent of the injection time in a limited time interval. The setup is designed to perform experiments to measure the positron lifetime with the positron annihilation spectroscopy method (Positron Annihilation Lifetime Spectroscopy - PALS). PALS method allows to distinguish defect types in the materials. It is possible to vary the positron energy in the present version of the setup that allows us to analyze the distribution of defects along the depth of the sample. The scheme of periodic RF voltage generation of a given form and measurement of the positron lifetime, is discussed.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-TUPSA58  
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THPSC37 Photo-Activation Method for Electron Energy Determination of Linear Accelerator 483
 
  • S.V. Mitrofanov, V.V. Kobets, V. Shabratov, Yu.G. Teterev
    JINR, Dubna, Moscow Region, Russia
  • A.E. Brukva
    JINR/DLNP, Dubna, Moscow region, Russia
  • M. Krmar
    University of Novi Sad, Faculty of Sciences, Novi Sad, Serbia
  • T.V. Tetereva
    MSU SINP, Moscow, Russia
 
  Unknown energy of electron beam of linear accelerator was estimated by photo activation of only one activation detector - foil of natural indium. Three different photonuclear reactions were considered: 115In(gamma, gamma')115mIn, 115In(gamma, n)114mIn and 115In(gamma, 2n)113mIn. Ratio of saturation activities R(113mIn)/R(115mIn) and R(114mIn)/R(115mIn) were determined by standard gamma spectroscopy in electron energy region of interest (10 MeV - 23 MeV) using indium foils exposed in the FLNR microton MT25 bremsstrahlung beam. The choice of cyclic accelerator MT25, as a reference machine, was made due to the fact, that the energy of its electrons is known with accuracy not worse than 1%. Same ratios of saturation activities were determined after exposition of In activation detectors in photon beam of linear accelerator. The fact that both irradiations, by microton MT25 and accelerator, were performed in identical geometry using same target (3 mm of Tungsten) allowed us to estimate electron energy of accelerator by comparison of ratios of saturation activities obtained by both machines. Small variation in accelerator electron current was taken in consideration.  
poster icon Poster THPSC37 [0.975 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-RUPAC2018-THPSC37  
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