ANALYSIS OF THE PERFORMANCE OF A NEW TYPE OF LINEAR PERIODIC MAGNETS

XU Jian-Ming; XU Qing

Chinese Physics C> 1988, Vol. 12> Issue(4) : 513-520

ANALYSIS OF THE PERFORMANCE OF A NEW TYPE OF LINEAR PERIODIC MAGNETS

XU Jian-Ming ^, ,
XU Qing

Institute of High Energy Physics,Academia Sinica,Beijing

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Abstract：
In this paper the performance of a new type (modulating widths type)of linear periodic magnets is analysed.In ideal 2-dimensional case the field produced by this type of magnet is pure sinusoidal.Soft iron shield can be used to strengthen the magnetic field and in some cases the strengthening factor is larger than two.
The expressions of the field distributions in ideal case and in real case and the expression of strengthening factor are given.Methods for reducing undesirable harmonics in the magnetic field are also discussed in this paper.

References

[1]	K. Halbach et al., IEEE Tronr. Nucl. Sci. NS-28( 1981), 3136[2] 刘茂三等，高能物理与核物理，6(1982),764,[3] 徐建铭等，中国专利局专利申请号85106663,[4] 徐清等，原子能科学技术，20(1986)，一6期.[5] Xu Qing, Nucl. lnstr, and Meth., A253(1987), 173.[6] Xu Qing et al., Nucl. lnstr, and Meth:, A251(1986), 172.

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XU Jian-Ming and XU Qing. ANALYSIS OF THE PERFORMANCE OF A NEW TYPE OF LINEAR PERIODIC MAGNETS[J]. Chinese Physics C, 1988, 12(4): 513-520.

XU Jian-Ming and XU Qing. ANALYSIS OF THE PERFORMANCE OF A NEW TYPE OF LINEAR PERIODIC MAGNETS[J]. Chinese Physics C, 1988, 12(4): 513-520. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

ANALYSIS OF THE PERFORMANCE OF A NEW TYPE OF LINEAR PERIODIC MAGNETS

XU Jian-Ming ^,
XU Qing

Corresponding author: XU Jian-Ming,

Institute of High Energy Physics,Academia Sinica,Beijing

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1988-08-05

Abstract: In this paper the performance of a new type (modulating widths type)of linear periodic magnets is analysed.In ideal 2-dimensional case the field produced by this type of magnet is pure sinusoidal.Soft iron shield can be used to strengthen the magnetic field and in some cases the strengthening factor is larger than two.
The expressions of the field distributions in ideal case and in real case and the expression of strengthening factor are given.Methods for reducing undesirable harmonics in the magnetic field are also discussed in this paper.