| Paper | Title | Page |
|---|---|---|
THPP106 |
High charge heavy ion production for DPIS | |
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| We have studied intense heavy ion acceleration using direct plasma injection scheme (DPIS). The DPIS consists of a laser ion source and RFQ linac. The produced laser ablation plasma is transported to an RFQ directly and the high brightness heavy ion flux can be efficiently captured by the RF focusing force. In the scheme, one of the most important key issues is how to control the ablation plasma properties. Recently we have tried to use a sub nano second laser system and found that the depth of plasma surface layer, where the laser energy is absorbed, is too thin to heat the plasma. To overcome this issue, the laser beam is split into two beams and those reached at the same spot on the target surface with a few nano second time interval. We will report the experimental results of the new irradiation technique. | ||