Title :
Topology optimization in the passive shim for the permanent magnet NMR
Author :
Yang, Liu ; Yang, Minghao ; Dong, Lanlan
Author_Institution :
Coll. of Eng., China Agric. Univ., Beijing, China
Abstract :
An improved method for allowing a NMR magnet to meet its field homogeneity requirements has been developed. Using the adjoint variable method, topology design sensitivity is derived analytically. Coupled with continuum topology sensitivity analysis, steep descent method is employed to find an optimized distribution of the shimming block of iron for the permanent magnets NMR. Different free induction decay signal data shows the effectiveness of the proposed optimal design method.
Keywords :
NMR spectroscopy; optimisation; permanent magnets; sensitivity analysis; shims; topology; NMR magnet; adjoint variable method; optimal design method; permanent magnet; shimming block; steep descent method; topology design sensitivity; topology optimization; NMR; Permanent magnet; Sensitivity analysis; Topology optimization;
Conference_Titel :
World Automation Congress (WAC), 2010
Conference_Location :
Kobe
Print_ISBN :
978-1-4244-9673-0
Electronic_ISBN :
2154-4824
