Cryogenic aspects of a demountable toroidal field magnet system for tokamak type fusion reactors [electronic resource]
A new concept for superconducting Toroidal Field (TF) magnet construction is presented. It is termed the ''Demountable Externally Anchored Low Stress'' (DEALS) magnet system. In contrast to continuous wound conventional superconducting coils, each magnet coil is made from several...
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Online Access |
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| Main Authors: | , , |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Upton, N.Y. : Oak Ridge, Tenn. :
Brookhaven National Laboratory ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
1977.
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| Subjects: |
MARC
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| 245 | 0 | 0 | |a Cryogenic aspects of a demountable toroidal field magnet system for tokamak type fusion reactors |h [electronic resource] |
| 260 | |a Upton, N.Y. : |b Brookhaven National Laboratory ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Department of Energy, |c 1977. | ||
| 300 | |a Pages: 24 : |b digital, PDF file. | ||
| 336 | |a text |b txt |2 rdacontent. | ||
| 337 | |a computer |b c |2 rdamedia. | ||
| 338 | |a online resource |b cr |2 rdacarrier. | ||
| 500 | |a Published through SciTech Connect. | ||
| 500 | |a 01/01/1977. | ||
| 500 | |a "bnl-22497" | ||
| 500 | |a " conf-770801-3" | ||
| 500 | |a Cryogenic engineering conference, Boulder, CO, USA, 2 Aug 1977. | ||
| 500 | |a Powell, J.; Lehner, J.; Hsieh, S.Y. | ||
| 520 | 3 | |a A new concept for superconducting Toroidal Field (TF) magnet construction is presented. It is termed the ''Demountable Externally Anchored Low Stress'' (DEALS) magnet system. In contrast to continuous wound conventional superconducting coils, each magnet coil is made from several straight coil segments to form a polygon which can be joined and disjoined to improve reactor maintenance accessibility or to replace failed coil segments if necessary. A design example is presented of a DEALS magnet system for a UWMAK II size reactor. The overall magnet system is described, followed by a detailed analysis of the major heat loads in order to assess the refrigeration requirements for the concept. Despite the increased heat loads caused by high current power leads (200,000 amps) and the coil warm reinforcement support system, the analysis shows that at most, only about one percent (approximately 20 Mw) of the plant electrical output (approximately 2,000 Mw) is needed to operate the magnet cryogenic system. The advantages and the drawbacks of the DEALS magnet system are also discussed. The advantages include: capability to replace failed coils, increased accessibility to the blanket shield assembly, reduced reliability requirements for the magnet, much lower stress in conductor, easier application of improved high field brittle superconductors like Nb/sub 3/Sn, improved magnet safety features, etc. The drawbacks are the increased refrigeration requirements and the necessity of a movable coil support system. A comparison with a conventional magnet system is made. It is concluded that the benefits of the DEALS approach far outweigh its penalties, and that the DEALS concept is the most practical, economical way to construct TF magnet systems for Tokamak reactors. | |
| 536 | |b EY-76-C-02-0016. | ||
| 650 | 7 | |a Superconducting Magnets. |2 local. | |
| 650 | 7 | |a Cryogenics. |2 local. | |
| 650 | 7 | |a Design. |2 local. | |
| 650 | 7 | |a Tokamak Type Reactors. |2 local. | |
| 650 | 7 | |a Comparative Evaluations. |2 local. | |
| 650 | 7 | |a Stresses. |2 local. | |
| 650 | 7 | |a Electrical Equipment. |2 local. | |
| 650 | 7 | |a Electromagnets. |2 local. | |
| 650 | 7 | |a Equipment. |2 local. | |
| 650 | 7 | |a Magnets. |2 local. | |
| 650 | 7 | |a Superconducting Devices. |2 local. | |
| 650 | 7 | |a Thermonuclear Reactors. |2 local. | |
| 650 | 7 | |a Plasma Physics And Fusion Technology. |2 edbsc. | |
| 650 | 7 | |a Classical And Quantum Mechanics, General Physics. |2 edbsc. | |
| 700 | 1 | |a Powell, J. |q (James), |d 1932- |4 aut. | |
| 700 | 1 | |a Lehner, J. |4 aut. | |
| 700 | 1 | |a Hsieh, S.Y. |4 aut. | |
| 710 | 2 | |a Brookhaven National Laboratory. |4 res. | |
| 710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
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