Beam Dynamic Design of IH-DTL with Built-in Permanent Magnet Quadrupole Lens

Bo ZHANG; Yao YANG; Yu TANG; Yuhan ZHAI; Huanyu ZHAO

doi:10.11804/NuclPhysRev.40.2022025

Volume 40 Issue 4

Nov. 2023

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Nuclear Physics Review > 2023 > 40(4): 534-540. > DOI: 10.11804/NuclPhysRev.40.2022025

Bo ZHANG, Yao YANG, Yu TANG, Yuhan ZHAI, Huanyu ZHAO. Beam Dynamic Design of IH-DTL with Built-in Permanent Magnet Quadrupole Lens[J]. Nuclear Physics Review, 2023, 40(4): 534-540. DOI: 10.11804/NuclPhysRev.40.2022025

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Beam Dynamic Design of IH-DTL with Built-in Permanent Magnet Quadrupole Lens

Bo ZHANG^{1, 2,},
Yao YANG^{1, 2},
Yu TANG^{1, 2},
Yuhan ZHAI^{1, 2},
Huanyu ZHAO^{1, 2, ,}

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2.
School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China

Funds: National Natural Science Foundation of China(11722547); Key Program in Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH041)

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Corresponding author:
Huanyu ZHAO, E-mail: zhaohy@impcas.ac.cn
Received Date: February 24, 2023
Revised Date: June 23, 2023

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Abstract

Abstract

Based on KONUS dynamics, the beam dynamic design of a compact IH-DTL with built-in permanent magnet quadrupole lens was completed. The DTL consists 37 acceleration cells and two sets of permanent magnet quadrupole lenses, enabling the acceleration of C⁶⁺ ion beam of 20 emA from 0.5 MeV/u to 4.0 MeV/u. Throughout the design process, significant focus was placed on optimizing the voltage of the acceleration gap, the parameters of the quadrupole magnet, the phase setting of the beam injection, and the energy and phase setting of the 0-degree reference particle to control the transverse and longitudinal emittance growth of the high-current ion beam in the low-energy range. Consequently, transverse normalized RMS acceptance of the IH-DTL reaches 0.37 πmm · mrad, and the transmission efficiency exceeds 95%.
- IH-DTL,
- KONUS,
- permanent magnet quadrupole lens

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