Abstract
To fulfill the requirements for ITER in-vessel magnetic diagnostics, several coil prototypes have beendeveloped, aiming at minimizing the disturbing effects of temperature gradients and radiation inducedphenomena. As a first step in the radiation resistance testing of these prototypes, an in-situ high doserate gamma radiation test on a selection of prototypes was performed. The aim of this test was to get afirst experimental feedback regarding the behavior of the pick-up coil prototypes under radiation. Fiveprototypes (a coil wound with glass-insulated copper wire, two LTCC coils and two HTCC coils) wereirradiated at a dose rate of 46 kGy/h up to a total dose of 72 MGy and at a temperature of 50◦C. Duringthe irradiation, the continuity resistances and the insulation resistances were continuously measured.Before and after irradiation reference data were recorded as a function of temperature (from 30◦C to130◦C). This paper includes the results of the temperature and irradiation tests and a discussion of thebehavior of the prototype coils in terms of electrical and mechanical properties.
Details
Original language | English |
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Pages (from-to) | 1161-1164 |
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Journal | fusion engineering and design |
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Volume | 88 |
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Issue number | 6-8 |
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DOIs | |
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Publication status | Published - Oct 2013 |
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Event | 27th Symposium on Fusion Technology (SOFT) - SCK•CEN, TEC, Liège, Belgium Duration: 24 Sep 2012 → 28 Sep 2012 |
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