Author: Zyuzin, D.
Paper Title Page
TUPPC070 Alternating Spin Aberration Electrostatic Lattice for EDM Ring 1332
 
  • Y. Senichev, R. Maier, D. Zyuzin
    FZJ, Jülich, Germany
  • M. Berz
    MSU, East Lansing, Michigan, USA
 
  The idea of the electric dipole moment search using the storage ring (SrEDM) with polarized beam is realized under condition of the long-time spin coherency of all particles, the time during which the RMS spread of the spin orientation of all particles in the bunch reaches one radian. Following the requirements of the planned EDM experiment, the SCT should be more than 1000 seconds. During this time each particle performs about 109 turns in the storage ring moving on different trajectories through the optics elements. At such conditions the spin-rotation aberrations associated with various types of space and time dependent nonlinearities start to play a crucial role. In this paper we consider a new method based on the alternating spin drift, causing it to rotate alternately, thereby limiting the growth of aberrations at one order of magnitude lower. As a result, using this method we can achieve the SCT of the order of 5000-6000 seconds. The difficulties of these studies are still in the fact that the aberrations growth observed in the scale of a 109 turns. For the study we use an analytical method in composition with a numerical simulation by COSY Infinity.  
 
TUPPC071 Comparison of Different Numerical Modelling Methods for Beam Dynamics in Electrostatic Rings 1335
 
  • D. Zyuzin, R. Maier, Y. Senichev
    FZJ, Jülich, Germany
  • S.N. Andrianov, A.N. Ivanov
    St. Petersburg State University, St. Petersburg, Russia
  • M. Berz
    MSU, East Lansing, Michigan, USA
 
  To search the electric dipole moment was proposed to use polarized protons at the so-called "magic" momentum of 0.7 GeV/c in an electric storage ring. For studying beam dynamics in electrostatic rings different computational methods can be used. We used differential algebra methods realized in COSY Infinity and integrating program with symplectic Runge-Kutta methods. These methods were observed and compared for orbital and spin motion.  
 
TUPPC072 Modeling of Matching Channel for Accelerator Complexes 1338
 
  • E.A. Podzyvalov, S.N. Andrianov
    St. Petersburg State University, St. Petersburg, Russia
  • D. Zyuzin
    FZJ, Jülich, Germany
 
  Practically modern accelerator facility can be considered as a composite machines. Therefore it is necessary to consider special matching channels to joint all accelerator components together. For such channels advance various requirements, which can be formulated in the form of criteria sets. In this paper considered a global optimization concept allows to find appropriate solutions sets. This approach is demonstrated on the problem of modeling the matching channels for NICA accelerator complex.