Particle Orbits and Radial Loss in the GAMMA10 Tandem Mirror

Ion orbits trapped in the transition mirror cells with non-axisymmetric magnetic field in GAMMA10 are calculated. It is found that those orbits are deviated from the magnetic flux tube. The results indicate the existence of “radial loss cone” in view of the limiter. The radial drift due to the radial loss cone is examined numerically and analytically.