Fixed duration pursuit-evasion differential game with integral constraints

We investigate a pursuit-evasion differential game of countably many pursuers and one evader. Integral constraints are imposed on control functions of the players. Duration of the game is fixed and the payoff of the game is infimum of the distances between the evader and pursuers when the game is completed. Purpose of the pursuers is to minimize the payoff and that of the evader is to maximize it. Optimal strategies of the players are constructed, and the value of the game is found. It should be noted that energy resource of any pursuer may be less than that of the evader

SUPERCONDUCTING 7.5 TESLA WIGGLER FOR PLS

The construction of a dedicated SR source - the 2 GeV PLS - is being completed in Korea. The superconducting 3-pole wiggler (the wavelength shifter) with a 7.5 T maximum field at the central pole, which is to be installed at the PLS storage ring, was manufactured by the Budker Institute of Nuclear Physics (Novosibirsk) in cooperation with the PLS Laboratory (POSTECH, Pohang), The magnetic field at the side poles does not exceed 1.7 T in order to suppress the second source in the hard spectral region. The basic parameters of the wiggler and the radiation properties are given. Preliminary results of the wiggler testing in a special immersed cryostat are presented.X1112sciescopu