標題: Magnetic field features of various magnetic circuits on the sextupole magnet
作者: Hwang, CS
Chang, CH
Fan, TC
Uen, TM
Tseng, PK
電子物理學系
Department of Electrophysics
公開日期: 1-十月-1996
摘要: In this study, two adjacent sextants were partially cut from one side of a sextupole magnet in order to accommodate the electron beam bending chamber associated with a three x-ray beam dine chamber. The yoke cutting of these two sextants creates a different magnetic circuit which induces several forbidden fields. Meanwhile, the fundamental strength of this magnetic circuit is less than that of the normal on cut sextupole magnets in the storage ring. An induced forbidden field and the lessened sextupole strength originated from the saturation effect occurring at the magnet's yoke cutting side. Therefore, an extra closed-loop magnetic circuit is added across the two adjacent sextants to compensate for the yoke's smaller core area. This extra magnetic circuit can eliminate the saturation effect which induces asymmetric field behavior. It can also compensate for the lessened sextupole strength. In this work, the field distribution for various excitation currents related to the three magnetic circuits were measured. The field measurement results with various excitation currents tell us that the field saturation phenomena create the asymmetry field, forbidden field, and the lessened sextupole strength of the yoke cut magnetic circuit.
URI: http://hdl.handle.net/11536/994
ISSN: 0577-9073
期刊: CHINESE JOURNAL OF PHYSICS
Volume: 34
Issue: 5
起始頁: 1227
結束頁: 1236
顯示於類別:期刊論文


文件中的檔案:

  1. A1996VM57500006.pdf