IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Vacuum Science & Technology Thursday Sessions
       Session VST3-ThP

Paper VST3-ThP1
Pressure Distribution Modeling for Cyclotron's Vacuum Chambers and Ion Beam Guidelines

Thursday, November 1, 2001, 5:30 pm, Room 134/135

Session: Vacuum System Modeling Poster Session
Presenter: A.V. Tikhomirov, Joint Institute for Nuclear Research, Russia
Authors: A.V. Tikhomirov, Joint Institute for Nuclear Research, Russia
M.N. El-Shazly, JINR, FLNR, Russia
G.G. Gulbekian, JINR, FLNR, Russia
Correspondent: Click to Email
The simulation method for determination of the pressure distribution inside the vacuum chamber of any geometrical configuration for a cyclotron's vacuum system is described. The results of the simulation program codes tested on the base of the data obtained at the FLNR heavy ion cyclotrons are presented. The developed simulation method practically allows optimizing any configuration of the vacuum system from the point of view of the pumping speed and pump's location. In conjunction with another program code, developed by the authors for an evaluation of the ion charge changing cross section, this simulation method allows to forecast the ion beam loss due to the charge exchange with the residual gas molecules.