Abstract
Induction synchrotron is a new type of synchrotron using induction acceleration, not RF acceleration. This can achieve three possibilities: super bunch (very long beam) acceleration, wide-band acceleration and beam handling. Recently, we have established the wide-band acceleration technique at KEK digital accelerator which is a small scale prototype of fast cycling induction synchrotron [1]. It can accelerate any ion species directly to higher energy without a large pre-accelerator, due to its intrinsic nature that there is no frequency band-width limitation below 1 MHz. It has been confirmed that heavy ion beams of mass to charge ratio A/Q = 4 are stably accelerated from 200 keV to a few tens of MeV, where the revolution frequency changes from 82 kHz to 1 MHz in this accelerator ring. In this paper, the wide-band induction acceleration is presented with experimental results.
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