Behavior of Misaligned Beams in a High-Intensity Proton RFQ.

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概要

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• Motion of off-centered beams in an RFQ for basic researches on nuclear transmutation was analyzed by using a beam optics computer code. In this analysis not only higher-order harmonics in the intervane potential but also 3D beam-generated forces including image effects were taken into account. Beam loss property and transmission efficiency were investigated for different input beam currents as well as for different injection angles. Results are compared with predictions by the PARMTEQ code. Enhancement of beam displacement at the exit of the cavity as well as increase in transverse beam loss was observed as effects of the image charge force. In any case beam loss due to the image effects was less than 3% of the injected particles. For beam injection angles larger than 1°, the beam transmission efficiency decreased owing to non-linear terms in the intervane potential. Tolerance for the error in beam injection angle into the RFQ cavity is also discussed.

• 一般社団法人 日本原子力学会の論文

著者

• OGURI Yoshiyuki

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

• HASEGAWA Kazuo

  Accelerator Engineering Laboratory, Japan Atomic Energy Research Institute

• WU Guanglu

  Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology

関連論文

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• Stopping Power Measurement of 225 keV/u Oxygen Ions in Laser-Produced Lithium Hydride Plasma
• Grid-Controlled Extraction of Low-Charged Ions from a Laser Ion Source
• Beam Tracking in an RFQ Linac with Small Vane-Tip Curvature.
• Behavior of Misaligned Beams in a High-Intensity Proton RFQ.

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