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Harmonic analysis and field quality improvement of an HTS quadrupole magnet for a heavy ion accelerator
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 Title & Authors
Harmonic analysis and field quality improvement of an HTS quadrupole magnet for a heavy ion accelerator
Zhang, Zhan; Wei, Shaoqing; Lee, Sangjin; Jo, Hyun Chul; Kim, Do Gyun; Kim, Jongwon;
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 Abstract
In recent years, the iron-dominated high-temperature superconductor (HTS) quadrupole magnets are being developed for heavy ion accelerators. Field analyses for iron-dominated quadrupole magnets were based on the normal-conducting (NC) quadrupole magnet early in the development for accelerators. Some conclusions are still in use today. However, the magnetic field of iron-dominated HTS quadrupole magnets cannot fully follow these conclusions. This study established an HTS quadrupole magnet model and an NC quadrupole magnet model, respectively. The harmonic characteristics of two magnets were analyzed and compared. According to the comparison, the conventional iron-dominated quadrupole magnets can be designed for maximum field gradient; the HTS quadrupole magnet, however, should be considered with varying field gradient. Finally, the HTS quadrupole magnet was designed for the changing field gradient. The field quality of the design was improved comparing with the result of the previous study. The new design for the HTS quadrupole magnet has been suggested.
 Keywords
Heavy ion accelerator;HTS quadrupole magnets;Harmonic analysis;iron-dominated quadrupole magnets;
 Language
English
 Cited by
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 References
1.
Jack Tanabe, "Iron Dominated Electromagnets-Design, Fabrication, Assembly and Measurements," SLAC-R-754, June 2005.

2.
J. P. Cozzolino et al., "Engineering Design of HTS Quadrupole for FRIB," Accelerator Technology, Proceedings of Particle Accelerator Conference, New York, USA, 2011.

3.
H. Takeda et al., "Extraction of 3D field maps of magnetic multipoles from 2D surface measurements with applications to the optics calculations of the large-acceptance superconducting fragment separator BigRIPS," Nuclear Instruments and Methods in Physics, Research B317, pp. 798-809, 2013.

4.
Zhan Zhang, Sangjin Lee et al., "A Study on the Optimization of an HTS Quadrupole Magnet System for a Heavy Ion Accelerator Through Evolution Strategy," IEEE Trans. Appl. Supercond., vol. 26 , pp. 1-4, 2016.

5.
A. Kalimov and P. Nalimov, "Optimization of the Pole Shape of Quadrupole Magnets by MULTIMAG," IEEE Trans. App. Supercond., vol.16, pp. 1282, 2006. crossref(new window)

6.
J. P. Cozzolino et al., "Engineering Design of HTS Quadrupole For FRIB," Accelerator Technology, TUP162, Proceedings of Particle Accelerator Conference, New York, USA, 2011.

7.
Z. Zhang, S. Lee and H. Jo et al., "Magnetic Field characteristics from HTS Quadruple Magnet of In-Flight Separator for a Heavy Ion Accelerator," Superconductivity and Cryogenics, vol. 17, no. 3, pp. 23-27, 2015. crossref(new window)

8.
N. Hansen, The CMA Evolution Strategy: A Tutorial, ArXiv e-prints, arXiv:1604.00772, 2016.

9.
S. Russenschuck, Field Computation for Accelerator Magnets. Weinheim, Germany: Wiley-VCH, 2010.

10.
J .J. Muray, "Effective Length Measurement for Quadrupole Magnets," SLAC-TN-63-010, 1963.

11.
D. Einfeld, "Specifications, quality control, manufacturing, and testing of accelerator magnets," CELLS-ALBA, Barcelona, Spain. Available: http://arxiv.org/ftp/arxiv/papers/1103/1103.1815.pdf.