Magnet-Sorting Algorithm for an Elliptically Polarized Undulator at TPS

An effective initial sorting of permanent magnets can decrease the adverse effects of magnetic inhomogeneities and the imperfect geometry of blocks on the performance of an undulator. A sorting algorithm, based on simulated annealing, for the TPS EPU is implemented. The algorithm takes into account...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2014-06, Vol.24 (3), p.1-5
Hauptverfasser:	Chung, Ting-Yi, Chen, Sei-Da, Hwang, Ching-Shiang, Chang, Cheng-Hsing, Lin, Fu-Yuan, Huang, Jui-Che, Jan, Jyh-Chyuan, Chang, Cheng-Hsiang
Format:	Artikel
Sprache:	eng
Schlagworte:	Amorphous magnetic materials Condensed matter: electronic structure, electrical, magnetic, and optical properties Cost function Domain effects, magnetization curves, and hysteresis Exact sciences and technology Inhomogeneity magnet sorting Magnetic properties and materials Magnetization Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects non unit effect Permanent magnets Physics Sorting Studies of specific magnetic materials Superconducting magnets undulator Undulators
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Beschreibung
Zusammenfassung:	An effective initial sorting of permanent magnets can decrease the adverse effects of magnetic inhomogeneities and the imperfect geometry of blocks on the performance of an undulator. A sorting algorithm, based on simulated annealing, for the TPS EPU is implemented. The algorithm takes into account the magnetization of the blocks and the interactions between magnets. The field quality, including multipole, phase error, and particle trajectory, was optimized to within the specified tolerance. In this paper, we describe the sorting procedure and demonstrate the optimization results.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2013.2292941