scholarly journals Study on the Magnetic Field Homogeneity of Stacked HTS Bulk Magnets Including the Deteriorated HTS Bulk by Crack for Compact NMR Relaxometry

2016 ◽  
Vol 81 ◽  
pp. 166-169 ◽  
Author(s):  
K. Hojo ◽  
S.B. Kim ◽  
D. Miyazawa ◽  
R. Nomura ◽  
S. Fukada
Keyword(s):  
Magnetic Field ◽  
Hts Bulk ◽  
Nmr Relaxometry ◽  
Magnetic Field Homogeneity ◽  
Field Homogeneity ◽  
The Magnetic Field

scholarly journals Optimization of the Magnetic Field Homogeneity Area for Solenoid Type Magnets

2018 ◽  
Vol 173 ◽  
pp. 03018
Author(s):  
Eugene Perepelkin ◽  
Rima Polyakova ◽  
Aleksandr Tarelkin ◽  
Alexander Kovalenko ◽  
Pavel Sysoev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Homogeneous Field ◽  
Magnetic Field Homogeneity ◽  
Field Homogeneity ◽  
Modern Physics ◽  
Nica Project ◽  
The Magnetic Field

Homogeneous magnetic fields are important requisites in modern physics research. In this paper we discuss the problem of magnetic field homogeneity area maximization for solenoid magnets. We discuss A-model and B-model, which are basic types of solenoid magnets used to provide a homogeneous field, and methods for their optimization. We propose C-model which can be used for the NICA project. We have also carried out a cross-check of the C-model with the parameters stated for the CLEO II detector.

scholarly journals Magnetic field computation and simulation of the coil systems using Comsol software

2018 ◽  
Vol 160 ◽  
pp. 01006 ◽  
Author(s):  
Ivan Zatonov ◽  
Pavel Baranov ◽  
Andrey Kolomeycev
Keyword(s):  
Magnetic Field ◽  
Axial Direction ◽  
Calibration System ◽  
Method Of Calculation ◽  
Helmholtz Coils ◽  
Magnetic Field Homogeneity ◽  
Different Types ◽  
Field Homogeneity ◽  
Magnetic Field Computation ◽  
The Magnetic Field

The article considers the calibration system computation with the inhomogeneity of magnetic field less than 0.1 %. Method of calculation is described. The numerical simulation using finite-element analyze was made for such system as: Helmholtz coils, improved Helmholtz coils, four and six coils system. Authors made the calculation of the magnetic field homogeneity toward axial direction. Based on procure results, authors analyzed magnetic field homogeneity and compared different types of coil systems.

scholarly journals ANALYSIS OF THE MAGNETIC FIELD HOMOGENEITY FOR AN EQUILATERAL TRIANGULAR HELMHOLTZ COIL

2016 ◽  
Vol 50 ◽  
pp. 75-83 ◽  
Author(s):  
Andres Fernando Restrepo Alvarez ◽  
Edinson Franco Mejia ◽  
Hector Cadavid Ramirez ◽  
Carlos Rafael Pinedo Jaramillo
Keyword(s):  
Magnetic Field ◽  
Helmholtz Coil ◽  
Magnetic Field Homogeneity ◽  
Field Homogeneity ◽  
The Magnetic Field

Simulation and Optimization of an Octagonal Halbach Permanent Magnet Array for Small-Size NMR

2014 ◽  
Vol 543-547 ◽  
pp. 509-513 ◽  
Author(s):  
Qiao Yan Chen ◽  
Guang Cai Zhang ◽  
Ya Jie Xu ◽  
Yan Chang ◽  
Hui Wang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Permanent Magnet ◽  
Magnetic Field Strength ◽  
Small Volume ◽  
Simulation And Optimization ◽  
Magnetic Field Homogeneity ◽  
Field Homogeneity ◽  
Design And Manufacture ◽  
The Magnetic Field

Halbach magnet array has advantages of its small size and yokeless, so it has been widely used in various areas. In this paper, two Halbach permanent magnet arrays for small-size NMR with cube and octagonal shape, respectively, were compared in parameters of average magnetic field strength, field homogeneity and volume with the same material consumption. It was found that the octagonal shape magnet has better performance than the cube one. Then the field homogeneity optimization for octagonal magnet was performed. By analysis of magnetic field strength, the best homogeneity in 5mm DSV (Diameter of Spherical Volume) with 133.4ppm was achieved when the height of magnetic blocks is 16.25mm. After optimization, the magnetic field homogeneity has been significantly improved when the shape of magnet has small volume. This result laid a foundation for the design and manufacture of the octagonal Halbach permanent magnet array in small size.

scholarly journals Magnetic field computation and simulation of the coil systems using Comsol software

2018 ◽  
Vol 158 ◽  
pp. 01032
Author(s):  
Ivan Zatonov ◽  
Pavel Baranov ◽  
Andrey Kolomeycev
Keyword(s):  
Magnetic Field ◽  
Axial Direction ◽  
Calibration System ◽  
Method Of Calculation ◽  
Helmholtz Coils ◽  
Magnetic Field Homogeneity ◽  
Different Types ◽  
Field Homogeneity ◽  
Magnetic Field Computation ◽  
The Magnetic Field

The article considers the calibration system computation with the inhomogeneity of magnetic field less than 0.1 %. Method of calculation is described. The numerical simulation using finite-element analyze was made for such system as: Helmholtz coils, improved Helmholtz coils, four and six coils system. Authors made the calculation of the magnetic field homogeneity toward axial direction. Based on procure results, authors analyzed magnetic field homogeneity and compared different types of coil systems.

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