Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2019, Vol. 30 ›› Issue (6): 95 doi: 10.1007/s41365-019-0616-0


Simultaneous acceleration of two kinds of ion beams in the RISP

Siwon Jang, Eun-San Kim   

  1. Department of Accelerator Science, Korea University Sejong Campus, Sejong 30019, South Korea
  • Received:2018-07-09 Revised:2018-12-27 Accepted:2019-01-18
  • Contact: Siwon Jang
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Siwon Jang, Eun-San Kim. Simultaneous acceleration of two kinds of ion beams in the RISP.Nuclear Science and Techniques, 2019, 30(6): 95     doi: 10.1007/s41365-019-0616-0

Abstract: The Rare Isotope Science Project (RISP) is a research complex consisting of a heavy-ion accelerator, which contains a front-end system, a super-conducting linear accelerator, an isotope separator online (ISOL) system, and an in-flight system. The original purpose of the post-linear-accelerator (post-linac) section was to accelerate either a stable driver beam derived from an electron cyclotron resonance ion source, or an unstable rare-isotope beam from an ISOL system. The post-linac lattice has now been redesigned using a novel and improved acceleration concept that allows the simultaneous acceleration of both a stable driver beam and a radioisotope beam. To achieve this, the post-linac lattice is set for a mass-to-charge ratio (A/q) that is the average of the two beams. The performance of this simultaneous two-beam acceleration is here assessed using two ion beams: 58Ni8+ and 132Sn20+ . A beam dynamics simulation was performed using the TRACK and TraceWin codes. The resultant beam dynamics for the new RISP post-linac lattice design are examined. We also estimate the effects of machine errors and their correction on the post-linac lattice.

Key words: Linear accelerator, Simultaneous two-beam acceleration, Heavy-ion accelerator, Beam dynamics