Author: Kazarinov, N.Yu.
Paper Title Page
WEPPT007 Getting Uniform Ion Density on Target in High-Energy Beam Line of Cyclotron U-400M with Two 335
  • I.A. Ivanenko, I.V. Kalagin, V.I. Kazacha, N.Yu. Kazarinov
    JINR, Dubna, Moscow Region, Russia
  Formation by means of octupole magnets of a uniform ions distribution in the existing beam line of U400M cyclotron has been studied. The simulation was performed for Ar17+ ions with energy of 41.3 MeV/amu. The required level of beam non-uniformity on the target with diameter of 60 mm is ±7.5%. Two octupoles with static magnetic fields have been used to achieve the desired uniformity of the beam density in both coordinates simultaneously. The results of calculations are presented. This method of improving the uniformity of the beam will be implemented soon in Flerov laboratory of JINR.  
WEPPT008 Correction of Vertical Shifting of Extracted Beam at the Test Operation of DC-110 Cyclotron 338
  • I.A. Ivanenko, B. Gikal, I.V. Kalagin, N.Yu. Kazarinov, V.I. Mironov, E. Samsonov
    JINR, Dubna, Moscow Region, Russia
  The specialized heavy ion cyclotron DC-110 has been designed and created by the Flerov Laboratory of Nuclear Reactions of Joint Institute for Nuclear Research for scientifically industrial complex “BETA” placed in Dubna (Russia). DC-110 cyclotron is intended for accelerating the intense Ar, Kr, Xe ion beams with fixed energy of 2.5 MeV/nucleon. The commissioning of DC-110 cyclotron has been carried out at the end of 2012. The project parameters of the ion beams have been achieved. During commissioning of cyclotron the vertical displacement of the beam at the last orbits and at the extraction channel was revealed. The calculations and experiments have shown that the reason of this displacement is the radial component of magnetic field at the median plane of the cyclotron, which appears because of asymmetry of the magnetic yoke. Correction of the vertical displacement of the beam has been achieved by creating an asymmetry of current distribution in the main coils of the electromagnet.