NDLI: Shim Coil Set for NMR Using a Novel Target Field Method Based on Trigonometric Series

Content Provider	IEEE Xplore Digital Library
Author	Geli Hu Zhipeng Ni Qiuliang Wang
Copyright Year	2002
Abstract	Target field (TF) method is very important for design of shim and gradient coils. Many works based on TF have been proposed. To restrict the current distribution on a cylinder with a given finite length, the current density is expanded by trigonometric series and the unknown coefficients are estimated based on the standard least square (LS) with L2 norm regularization (LS-L2). Then the winding pattern of the coils can be obtained by the stream function method. In this paper, the proposed method was employed to design a room temperature (RT) shim coil set for a 400 MHz nuclear magnet resonance spectrometer (NMR). The length of the main magnet used in this system is 400 mm, and the diameter of which is only 54 mm. The simulation results demonstrate that the proposed method is practical, and the magnet field homogeneity after shimming increases significantly.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1
Ending Page	5
Page Count	5
File Size	1347995
File Format	PDF
ISSN	10518223
Volume Number	24
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Coils Magnetic fields Windings Current density Nuclear magnetic resonance Superconducting magnets Physics target field (TF) Nuclear magnet resonance spectrometer (NMR) room temperature shim coil
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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