Chinese Physics C > 1984, Vol. 8 > Issue(1): 59-68

MAGNETIC FIELD ANALYSIS OF PERMANENT MAGNET UNDULATOR

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Abstract：
2 Dimensional magnetic field expression of permanent magnet undulator with gradually varied magnetization is derived. Conditions for minimizing high order harmonics are given. Three different types of permanent magnet undulator —— the "gradually varied" type, mixed type and simple type ——are compared. Upon these comparisions we conclude that "gradually varied" type is superior to mixed type except for Δh/ λ0.1.

References

[1]	J. E. Spencer "Wigglers-The Newest profession", SLAC-PUB-2677, PEP-NOTE 341 (1981)[2] K. Halbach et al., "A Permaneut Magnet Undulator for SPEAR”,TIEEE, NS-28, No. 3(1981).[3] 刘茂三等,高能物理与核物理,6(1982), 764.[4]И. С. Градщтейн, И. М. Рыжик 《Таблицы Интегралов, Сумм, Рядов и Лроизведений》(1971), Москова

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LIU Mao-San, SHI Cai-Tu and CHEN Ren-Huai. MAGNETIC FIELD ANALYSIS OF PERMANENT MAGNET UNDULATOR[J]. Chinese Physics C, 1984, 8(1): 59-68.

LIU Mao-San, SHI Cai-Tu and CHEN Ren-Huai. MAGNETIC FIELD ANALYSIS OF PERMANENT MAGNET UNDULATOR[J]. Chinese Physics C, 1984, 8(1): 59-68. 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

MAGNETIC FIELD ANALYSIS OF PERMANENT MAGNET UNDULATOR

Corresponding author:LIU Mao-San,

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1984-02-05

Abstract:2 Dimensional magnetic field expression of permanent magnet undulator with gradually varied magnetization is derived. Conditions for minimizing high order harmonics are given. Three different types of permanent magnet undulator —— the "gradually varied" type, mixed type and simple type ——are compared. Upon these comparisions we conclude that "gradually varied" type is superior to mixed type except forΔh/λ0.1.