Irradiation effects on magnetic probes made of mineral insulated cable

Nishitani, T.; Shikama, Tatsuo; Fukao, M.; Matsuo, Hideo; Snider, R. T.; Broesch, James D.; Sagawa, Naoki; Kawamura, Hiroshi; Kasai, S.

doi:10.1016/s0920-3796(00)00309-4

Cited by 9 publications

(4 citation statements)

References 2 publications

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“…Evaluation of the electrical resistivity in several kinds of alumina in the HFIR (Oak Ridge National Laboratory, USA) showed that aluminas could sustain the electrical resistivity induced by RIC higher than 10 M in the course of irradiation, whose accumulated dose exceeded that expected in the ITER [3][4][5]. Magnetic measurements could be carried out up to a few MHz under ITER-relevant irradiation conditions in the JMTR and the coil survived neutron fluence comparable to that expected in the whole life of the ITER [9].…”

Section: Magnetic Coil and Bolometermentioning

confidence: 99%

“…Several radiation effects, such as RIC and RIEMF will introduce serious disturbances [11,15]. In situ studies of the performance of the magnetic coils revealed that the RIC is not a problem when a coil is made of a mineral insulating cable (MI-cable) [9]. The analysis revealed that the internal resistance between a central lead and a sheath in the MI-cable could be down to a few tens of k , assuming an appropriate equivalent electrical circuit.…”

Section: Magnetic Coil and Bolometermentioning

confidence: 99%

“…Also, its structure is suitable for in situ measurements, namely real-time studies of performance of materials and components under a reactor operation. Examples of international collaboration executed in the JMTR are a Japan/USA Project on Irradiation Tests Utilizing Reactors, Temperature Regulated In Situ Test of Electrical Resistivity (JUPITER-TRIST-ER) project in Japan/USA collaboration for the study of radiation effects in electrical ceramic insulators [3][4][5], international round-robin tests of radiation-resistant optical fibres [6][7][8], and irradiation tests of magnetic coils under Japan-USA collaboration [9][10][11][12] and of bolometers under Japan-EU collaboration [9,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Irradiation test of diagnostic components for ITER application in the Japan Materials Testing Reactor

et al. 2003

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Radiation effects in components and materials will be one of the most serious technological issues in nuclear fusion systems realizing burning-plasmas. Especially, diagnostic components, which should play a crucial role in controlling plasmas and understanding the physics of burning-plasmas, will be exposed to high-flux neutrons and gamma rays. Dynamic radiation effects will affect the performance of components substantially from the beginning of exposure to radiation environments, and accumulated radiation effects will gradually degrade their functioning abilities in the course of their service. High-power-density fission reactors will be the only realistic tools to simulate the radiation environments expected to occur in burning-plasma fusion machines such as the International Thermonuclear Experimental Reactor (ITER), at present. Some key diagnostic components, namely magnetic coils, bolometers, and optical fibres, were irradiation-tested in a fission reactor, to evaluate their performances in heavy radiation environments. Results indicate that ITER-relevant radiation-resistant diagnostic components could be developed in time, although there are still some technological problems to be overcome.

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Section: Magnetic Coil and Bolometermentioning

confidence: 99%

Section: Magnetic Coil and Bolometermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Irradiation test of diagnostic components for ITER application in the Japan Materials Testing Reactor

et al. 2003

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“…At an early stage RIEMF (radiation induced electromotive force) in MI (mineral insulated) cables was recognized as a potential problem for ITER diagnostics [1][2][3][4][5][6][7][8]. Known for many years, RIEMF between the central conductor and outer sheath can generate potentials of the order of volts and microamps of current, producing additional noise in the cables.…”

Section: Introductionmentioning

confidence: 99%