Superconductive magnet construction
Abstract
Abstract IN SUPERCONDUCTIVE MAGNETS, THE MAGNETIC FIELD WITHIN THE BODY OF THE MAGNET VARIES FROM POINT TO POINT. BOTH THE CURRENT CONDUCTIVITY AND THE HEAT CONDUCTIVITY OF A NORMAL METAL DECREASES AS THE FIELD TO WHICH IT IS SUBJECTED INCREASES, WHEREBY THE NORMAL COATING ON THE RIBBON, HAVING A SUPERCONDUCTIVE CORE, WITH WHICH THE MAGNET IS WOUND PROVIDES LESS SHUNTING ACTION FOR THE SUPERCONDUCTIVE CORE OF THE RIBBON IN THE HIGH FIELD PORTIONS OF THE MAGNET. ALSO, AND FOR THE SAME REASON, THE NORMAL METAL PORTION OF THE INTERLAYER SHEETS WHICH ARE PLACED BETWEEN WINDING LAYERS OF THE MAGNET PROVIDE LESS FLUX MOTION PROTECTION IN THE HIGH FLUX FIELD PORTIONS OF THE MAGNET THAN IN THE LOW FIELD PORTIONS OF THE MAGNET. TO CAUSE THE STABILITY OF THE MAGNET TO BE UNIFORM THROUGHOUT ITS BULK, THE NORMAL METAL COATING ON THE RIBBON AND THE NORMAL METAL SHEET PORTION OF THE INTERLAYER SHEETS ARE MADE THICKER FOR THE HIGHER FIELD PORTIONS OF THE MAGNET THAN FOR THE LOWER FIELD PORTIONS THEREOF.
Inventors
- 👤 Henry C Schindler
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |