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Kashiwagi, H.

Paper Title Page
TUPLS095 Recent Progress about DPIS 0
 
  • M. Okamura, R.A. Jameson
    RIKEN, Saitama
  • T. Kanesue
    Kyushu University, Hakozaki
  • H. Kashiwagi
    JAEA/ARTC, Gunma-ken
  • A. Kondrashev
    ITEP, Moscow
  • K. Sakakibara
    RLNR, Tokyo
  • A. Schempp
    IAP, Frankfurt-am-Main
  • J. Tamura
    TIT, Yokohama
 
  We have focused on high brightness of induced plasma in Laser Ion Source (LIS) to provide intense highly charged ions efficiently. To take the advantage of the intrinsic density of the laser plasma, Direct Plasma Injection Scheme (DPIS) has been developed. The induced laser plasma has initial expanding velocity and can be delivered directly to the RFQ. Extraction electrodes and focusing devices in LEBT are not needed. Since 2004, a newly designed RFQ has been used to verify the capability of the new ion production scheme. We succeeded to accelerate 60 m A of Carbon beam and 60 mA of Aluminium beam. We have also tried to understand plasma properties of various species by measuring charge states distributions and time structures, and are now ready to accelerate heavier species. Currently Silver 15+ beam is planned to be accelerated. In the conference, design strategies and detailed techniques for the DPIS will be described based on the measured plasma properties of various elements and new findings obtained from recent acceleration experiments. The durability and the reproducibility will be also explained.