Abstract
The Energy Sweep Compact Rapid Cycling Hadron Therapy driver for future cancer therapies based on the induction synchrotron concept is described. This fast cycling synchrotron allows for energy sweep beam scanning. Assuming a 1.5 T bending magnet, the ring can deliver heavy ions of 430 MeV/u at 10 Hz. A beam fraction is dropped from the barrier bucket within a set period, and the increasing negative momentum deviation of this beam fraction becomes large enough for the fraction to fall in the electrostatic septum extraction gap, placed at the large D(s) region. The programmed energy sweeping extraction makes spot scanning beam irradiation on a cancer area in depth possible.
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