On the possibility to enhance accelerating efficiency in electron-ring accelerators

The method of decreasing the electron ring dimensions and increasing the stored ion charge with the aim of electron-ring accelerator efficiency improvement is suggested. At the finite radii of compression, the magnetic field index decrease close to one is created. The velocity of the radius decreasing and small ring dimensions at the expense of incoherent synchrotron radiation is significantly enhancing. This fact allows one to decrease the ring radius twice as for a few milliseconds and to store simultaneously multi-charged ions in the ring. The calculation of additional subcompression from the point of view of grand application to prototype electron-ring accelerator of the JINR has been carried out. For 6 μs the ring radius has been decreased up to 2 cm and the ratio of charge to mass ion number of heavy elements attains 0.3 -0.35. This will allow to enhance the acceleration rate of the electron-ion rings in prototype of electron-ring accelerator by a factor of 5