Author: Afzalan, V.
Paper Title Page
TUPPT023 Design and Simulation of Cavity for 10 MeV Compact Cyclotron 200
 
  • V. Afzalan, H. Afarideh, R. Azizi
    AUT, Tehran, Iran
  • J.-S. Chai, M. Ghergherehchi
    SKKU, Suwon, Republic of Korea
 
  RF system is known as one of the most vital parts to produce the efficient accelerator system. In this paper, the RF system and cavity of 10 MeV AVF ( Azimuthally Varying Field ) Cyclotron for radioisotope production are designed. The Cyclotron works on 4th harmonic with Dee's voltage of 50 KV. In order to supply the expected accelerating voltages RF power coupling and RF tuner has been considered. The RF system is simulated using commercially available simulator, CST Microwave Studio code. In contrast the geometry of cavity is optimized to achieve suitable Q value in desired frequency. Since the factors are non-ideal during the fabrication process, the actual Q value of cavities is estimated.  
 
WEPPT018 Behavior of Space Charge Dominated Beam Envelope in Central Region of High Current Cyclotron 359
 
  • R. Azizi, H. Afarideh, V. Afzalan
    AUT, Tehran, Iran
  • J.-S. Chai, M. Ghergherehchi
    SKKU, Suwon, Republic of Korea
 
  In this paper the space charge effect in the two first turn after injection has been investigated. In order to determine beam envelopes, two corresponding equations were chosen. In addition, all steps of calculation were done by MATLAB program. It should be mentioned limiting current and also magnetic, electrical field and edge effect has been considered. As far as, the high current cyclotron with 0.8π mm mrad emittance has been studied and current alters till 10 mA.*
*M. Reiser, Theory and Design of Charged Particle Beams (Wiley, New York, 1994), Chapters.3 and 4.