Key technology of the development of the CSNS/RCS AC dipole magnet

Li Qing; Kang Wen; Sun Xianjing; Deng Changdong; Chen Wan

doi:10.11884/HPLPB201729.160498

Volume 29 Issue 08

Aug. 2017

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Li Haibo, Shen Li, Zhai Jun, et al. Nanosecond grade edge chopper power supply system of high current proton accelerator[J]. High Power Laser and Particle Beams, 2017, 29: 085001. doi: 10.11884/HPLPB201729.170086

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Li Qing, Kang Wen, Sun Xianjing, et al. Key technology of the development of the CSNS/RCS AC dipole magnet[J]. High Power Laser and Particle Beams, 2017, 29: 085105. doi: 10.11884/HPLPB201729.160498

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Key technology of the development of the CSNS/RCS AC dipole magnet

doi: 10.11884/HPLPB201729.160498

Li Qing^1,2,3,
Kang Wen^1,2,3,
Sun Xianjing¹,
Deng Changdong^1,2,3,
Chen Wan¹

1.
Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;
2.
Dongguan Neutron Science center,Dongguan 523803,China;
3.
Dongguan Key Laboratory of High Precision Magnetic Field Measurement,Dongguan 523803,China

Received Date: 2016-10-25
Rev Recd Date: 2017-03-30
Publish Date: 2017-08-15

Abstract

Abstract

According to magnetic field properties and the eddy currents in AC dipole magnet, magnet design and the thermal simulation are performed by the electromagnetic field analysis software and the schemes of key technology are determined. The Rogowski curve and the harmonic chamfering method are applied to improve the magnetic field quality. Slit arrangement on the end plates of the dipole can cut down the eddy currents effectively and lessen the temperature rise. Coils of dipole magnet are made of Al-stranded conductors for the reduction of AC eddy losses. The measurement results and the temperature test of the prototype magnet are described and discussed. The magnetic fields of the prototype meet the requirements and the temperature rise is in the safety range.
- CSNS/RCS,
- DC biased AC magnet,
- Rogowski curve,
- end chamfering,
- slits,
- thermal analysis

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