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WEPPC011 Modernisation of an Initial Part the MILAC Heavy Ion Linear Accelerator ion, acceleration, rfq, heavy-ion 466
 
  • V.A. Bomko, A.P. Kobets, V.V. Panov, K.V. Pavlij, G.V. Sotnikov, B.V. Zajtsev
    NSC/KIPT, Kharkov, Ukraine
 
  New pre-stripping section (PSS-20) the MILAC heavy ion linear accelerator with the relation of their mass to charge A/q=20 is developed. That will allow to extend considerably a range accelerating ions and to increase intensity of beams. On an initial part of acceleration of ions from 6 keV/u up to 150 keV/u high capture in process of acceleration of the injected ions is provided interdigital (IH) accelerating structure with Radio-Frequency Quadrupole (RFQ) focusing. On the second part of acceleration of ions from 150 keV/u up to 1 MeV/u the highest rate of acceleration is created interdigital (IH) accelerating structure with drift tubes. Mathematical modeling geometrical and dynamic characteristics of accelerating structures pre-stripping section PSS-20 is executed. Dynamics of heavy ions in the course of acceleration is optimised.  
 
WEPPC038 RF Power and Control Systems for Phased Dipoles Array System for Hyperthermia dipole, controls, electromagnetic-fields, focusing 524
 
  • A.M. Fadeev, V.N. Belyaev, A.A. Blinnikov, S.M. Polozov
    MEPhI, Moscow, Russia
  • E.A. Perelstein
    JINR, Dubna, Moscow Region, Russia
 
  Cylindrical array of independently phased dipoles is suggested for hyperthermia of deep-situated tumors as a kind of treatment of cancer coupled with other methods such as radiation therapy and chemotherapy. It was proposed to focus the maximum of electromagnetic field at the site of tumor to produce high efficiency heating of tumor and to prevent overheating of surrounding healthy tissues. That's why we use system of independently fed dipole antennas. The operating frequency is 150 MHz. The independent feeding permits us to focus electromagnetic field producing by phased array in desirable area by means of changing of amplitudes and phases of each dipole. The RF power system schematic layout for 8 independently phased dipole antennas is presented. The control system of RF power system elements is considered. The software developing to provide choosing amplitude's and phase's values of dipoles are discussed.