Magnetic System of the New DC140 Isochronous Cyclotron Based on the DC72 Electromagnet

Abstract

The creation of a new multipurpose isochronous cyclotron DC140 is being carried out at the Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research. The DC140 cyclotron is intended for microchip testing on radiation resistance, the production of track pore membranes, and applied physics. The cyclotron will accelerate heavy ions with mass-to-charge ratio A/Z ranging from 5 to 8 up to fixed energies of 2.1 and 4.8 MeV per nucleon. The new cyclotron DC140 will be created as a deep reconstruction of the DC72 cyclotron. In particular, it is supposed to adapt the DC72 electromagnet for obtaining new acceleration regimes. In this paper, the main parameters of the DC72 and DC140 magnetic systems, the results of calculations and measurements of the magnetic field, and estimations of the possibility of formation of new acceleration regimes with minimal changes in the DC72 magnetic system are presented.