Structural design and analysis of a cryogen-free open superconducting magnet for interventional MRI applications

1995 ◽  
Vol 5 (2) ◽  
pp. 173-176 ◽  
Author(s):  
C. Minas ◽  
E.T. Laskaris
Keyword(s):  
Structural Design ◽  
Superconducting Magnet ◽  
Interventional Mri

A cryogen-free open superconducting magnet for interventional MRI applications

1995 ◽  
Vol 5 (2) ◽  
pp. 163-168 ◽  
Author(s):  
E.T. Laskaris ◽  
R. Ackermann ◽  
B. Dorri ◽  
D. Gross ◽  
K. Herd ◽  
...  
Keyword(s):  
Superconducting Magnet ◽  
Interventional Mri

Current Fusion Standards and Other Related Activities in Japan

2010 ◽  
Author(s):  
Yuji Nakasone ◽  
Kazuyoshi Sato ◽  
Yukio Takahashi
Keyword(s):  
Structural Design ◽  
English Translation ◽  
Fusion Energy ◽  
Superconducting Magnet ◽  
Japan Society ◽  
General Requirement ◽  
Roles And Responsibilities ◽  
Leak Testing ◽  
Main Target ◽  
Non Destructive

The Japan Society of Mechanical Engineers (JSME) published the construction standard for superconducting magnet structures for nuclear fusion facilities in December, 2008. The main target of the standard is tokamak-type fusion energy facilities, especially ITER, or the International Thermonuclear Experimental Reactor. The standard consists of seven articles and twelve mandatory and non-mandatory appendices to the articles; i.e., (1) Scope, roles and responsibilities, (2) Materials, (3) Structural design, (4) Fabrication and installation, (5) Non-destructive examination, (6) Pressure and leak testing, and (7) Terms used in general requirement. Following the publication of the standard, the procurement of toroidal coil coils has started since March, 2009 and it is revealed that the revision of the standard is necessary in many respects: e.g., (1) English translation of the standard is necessary for international procurement activities, (2) more wires other than prescribed in the standard are needed, etc. The present paper describes current fusion standards activities in JSME and other related fusion activities in Japan.

JSME Construction Standard for Superconducting Magnet of Fusion Facility “Procedure for Structural Design”

2009 ◽  
Author(s):  
Yukio Takahashi ◽  
Shigeru Tado ◽  
Kazunori Kitamura ◽  
Masataka Nakahira ◽  
Junji Ohmori ◽  
...  
Keyword(s):  
Stainless Steels ◽  
Structural Design ◽  
Structural Integrity ◽  
Superconducting Magnets ◽  
Austenitic Stainless Steels ◽  
Superconducting Magnet ◽  
Fatigue Curve ◽  
Stress System ◽  
Allowable Stress ◽  
Fatigue Assessment

Superconducting magnets are structures which have an important role in Tokamak-type fusion reactor plants. They are huge and complicated structures exposed to very low temperature, 4K and the methods for keeping their integrity need to be newly developed. To maintain their structural integrity during the plant operation, a procedure for structural design was developed as a part of JSME Construction Standard for Superconducting Magnet. General structures and requirements of this procedure basically follow those of class 1 and class 2 components in light water reactor plants as specified in Section III, Division 1 of the ASME Boiler and Pressure Vessel Code, and include the evaluation of primary stress, secondary stress and fatigue damage. However, various new aspects have been incorporated considering the features of superconducting magnet structures. They can be summarized as follows: (i) A new procedure to determine allowable stress intensity value was employed to take advantage of the excellent property of newly developed austenitic stainless steels. (ii) Allowable stress system was simplified considering that only austenitic stainless steels and a nickel-based alloy are planned to be used. (iii) A design fatigue curve at 4K was developed for austenitic stainless steels. (iv) In addition to the conventional fatigue assessment based on design fatigue curves, guidelines for fatigue assessment based on crack growth prediction were added as a non-mandatory appendix to provide a tool of assurance for welded joints which are difficult to evaluate nondestructively during the service.

JSME Construction Standard for Superconducting Magnet of Fusion Facility: “General View of the Code”

2009 ◽  
Author(s):  
Yuji Nakasone ◽  
Yukio Takahashi ◽  
Arata Nishimura ◽  
Tetsuya Suzuki ◽  
Hirosada Irie ◽  
...  
Keyword(s):  
Structural Design ◽  
Radiation Effects ◽  
Structural Integrity ◽  
Superconducting Magnets ◽  
Fusion Energy ◽  
Superconducting Magnet ◽  
General View ◽  
Deformation Control ◽  
Roles And Responsibilities ◽  
Set Up

The Japan Society of Mechanical Engineers (JSME) has set up and published the construction standard for superconducting magnet structures to be used in nuclear fusion facilities. The present target of the standard is tokamak-type fusion energy facilities, especially the International Thermonuclear Experimental Reactor called ITER for short. The standard contains rules for structural materials including cryogenic materials, structural design considering magnetic forces, manufacture including welding and installation, nondestructive testing, pressure proof tests and leak tests of toroidal field magnet structures. The standard covers requirements for structural integrity, deformation control, and leak tightness of all the components of the superconducting magnets and their supports except for superconducting strands and electrical insulators. The standard does not cover deterioration which may occur in service as a result of corrosion, radiation effects, or instability of material. The standard consists of seven articles and twelve mandatory and non-mandatory appendices to the articles; i.e., (1) Scope, roles and responsibilities, (2) Materials, (3) Structural design, (4) Fabrication and installation, (5) Non-destructive examination, (6), Pressure and leak testing, and (7) Terms used in general requirement. The present paper describes the general view of the standard. The detailed descriptions of the standard are described by the other papers in this session CS-21, being divided into four categories; i.e., (1) quality assurance, (2) materials, (3) structural design and replacement, and (4) welding, bonding and examination.

Structural Design of a 9.4 T Whole-Body MRI Superconducting Magnet

2012 ◽  
Vol 22 (3) ◽  
pp. 4900404-4900404 ◽  
Author(s):  
Yinming Dai ◽  
Qiuliang Wang ◽  
Chunzhong Wang ◽  
Lankai Li ◽  
Housheng Wang ◽  
...  
Keyword(s):  
Structural Design ◽  
Superconducting Magnet ◽  
Whole Body ◽  
Whole Body Mri

DESIGN CURRENT DENSITY IMPACT ON COST AND RELIABILITY OF SUPERCONDUCTING MAGNET SYSTEMS FOR EARLY COMMERCIAL MHD POWER PLANTS

1984 ◽  
Vol 45 (C1) ◽  
pp. C1-867-C1-870
Author(s):  
A. M. Hatch ◽  
P. G. Marston ◽  
R. J. Thome ◽  
A. M. Dawson ◽  
W. G. Langton ◽  
...  
Keyword(s):  
Current Density ◽  
Power Plants ◽  
Superconducting Magnet
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