Direct injection of fully stripped carbon ions into a fast-cycling induction synchrotron and their capture by the barrier bucket

Fully stripped carbon ions generated in a laser-ablation ion source are directly injected into a small-scale induction synchrotron. Carbon-ion beams of C^{6+}, C^{5+}, and C^{4+} are trapped in the barrier bucket. Beam properties, such as the momentum spread and beam lifetime in the low-energy ring, are measured and discussed in relation to the essential characteristics required in a carbon driver for future carbon therapies.