Paper |
Title |
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TPPE027 |
Properties of Laser-Produced Highly Charged Heavy Ions for Direct Injection Scheme
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1976 |
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- K. Sakakibara, T. Hattori, N. Hayashizaki, T. Ito
RLNR, Tokyo
- H. Kashiwagi
JAERI/ARTC, Gunma-ken
- M. Okamura
RIKEN, Saitama
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To accelerate highly charged intense ion beam, we have developed the Direct Plasma Injection Scheme (DPIS) with laser ion source. In this scheme an ion beam from a laser ion source is injected directly to a RFQ linac without a low energy beam transport (LEBT) and the beam loss in the LEBT can be avoided. We achieved high current acceleration of carbon ions (60mA) by DPIS with the high current optimized RFQ. As the next setp we will use heavier elements like Ag, Pb, Al and Cu as target in LIS (using CO2, Nd-YAG or other laser) for DPIS and will examine properties of laser-produced plasma (the relationship of between charge state and laser power density, the current dependence of the distance from the target, etc).
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TPPE031 |
60 mA Carbon Beam Acceleration with DPIS
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2206 |
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- M. Okamura, R.A. Jameson, K. Sakakibara, J. Takano
RIKEN, Saitama
- T. Fujimoto, S. Shibuya, T. Takeuchi
AEC, Chiba
- Y. Iwata, K. Yamamoto
NIRS, Chiba-shi
- H. Kashiwagi
JAERI/ARTC, Gunma-ken
- A. Schempp
IAP, Frankfurt-am-Main
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We have studied "direct plasma injection scheme (DPIS)" since 2000. This new scheme is for producing very intense heavy ions using a combination of an RFQ and a laser ion source. An induced laser plasma goes directly into the RFQ without an extraction electrode nor any focusing devices. Obtained maximum peak current of Carbon 4+ beam reached 60 mA with this extremely simple configuration. The details of the experimental result will be presented.
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