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

Shikama, Tatsuo; Nishitani, T.; Kakuta, T.; Yamamoto, Satoshi; Kasai, S.; Narui, Minoru; Hodgson, E.R.; Reichle, R.; Brichard, B.; Krassilinikov, A.; Snider, R. T.; Vayakis, G.; Costley, A. E.; Nagata, Shinji; Tsuchiya, B.; Toh, K.

doi:10.1088/0029-5515/43/7/301

Cited by 37 publications

(29 citation statements)

References 14 publications

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“…RIEMF is one source of such voltages, but early results [4] showed improbably high RIEMF. In-situ reactor tests of Mineral Insulated Cable (MIC) coils in JMTR [5] revealed the importance of coupled effects due to radiation and thermal gradients (TIEMF/ RITES).…”

Section: In-vessel Magnetic Sensorsmentioning

confidence: 99%

Nuclear technology aspects of ITER vessel-mounted diagnostics

Vayakis

Bertalot

Encheva

et al. 2011

Journal of Nuclear Materials

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ITER has diagnostics with machine protection, basic and advanced control, and physics roles. Several are distributed on the inner and outer periphery of the vacuum vessel. They have reduced maintainability compared to diagnostics in ports. They also endure some of the highest nuclear and EM loads of any diagnostic for the longest time. They include:Inductive sensors for time-integrated and raw inductive measurements; Steady-state magnetic sensors to correct drifts of the inductive sensors;Bolometer cameras to provide electromagnetic radiation tomography; Microfission chambers and neutron activation stations to provide fusion power and fluence; MM-wave reflectometry to measure the plasma density profile and the plasma-wall distance and;Wiring to service magnetics, bolometry, and in-vessel instrumentation. This paper summarises the key technological issues these diagnostics arising from the nuclear environment, recent progress and outstanding R&D for each system.

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Section: In-vessel Magnetic Sensorsmentioning

confidence: 99%

Nuclear technology aspects of ITER vessel-mounted diagnostics

Vayakis

Bertalot

Encheva

et al. 2011

Journal of Nuclear Materials

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“…However, they can suffer from serious radiation-induced optical absorption and radioluminescence. Special fabrication and glass hardening techniques must be developed before suitable radiationresistance dielectric waveguides can be used in ITER [11,12].…”

Section: Transmission Line and Corner Retroreflectorsmentioning

confidence: 99%

Design of the 48, 57 μm Poloidal Polarimeter for ITER

Pavlichenko

Kawahata

Donne

2007

Plasma and Fusion Research

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Polarimetry diagnostic for International Thermonuclear Experimental Reactor (ITER) considered among the tools to measure and, thus, to provide ability to control the thermonuclear plasma in the next generation fusion device. The shortage of the reliable sources in the short wavelength far infrared (FIR) region suggests to use common CH 3 OH oscillation line. Recently new laser sources became available at 50 µm FIR region. Proposed system unveil the alternative possibilities apart from 118.8 µm poloidal polarimeter for ITER. This system, which introduces 47.6 and 57.2 oscillation lines of CO 2 -laser pumped CH 3 OD laser inherits all well documented features from it 118.8 µm predecessor will shows the clear advantages to utilize shorter wavelength radiation for plasma probing.

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“…AlN is an insulator but has a very high heat conduction of 180 W / Km, which is half the value of copper. The heat conduction capabilities, however, degrade with neutron fluence [175]. The edges of the heat sinks and graphite tiles are aligned to the Mirnov-coil axis for avoiding phase changes in the transfer function.…”

Section: Sensor Designmentioning

confidence: 99%

Diagnostics for steady state plasmas

Hartfuß¹,

König²,

Werner³

2006

Plasma Phys. Control. Fusion

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Problems related to the development of diagnostics for steady state fusion plasma experiments are being discussed. The paper concentrates on those necessities already appearing in nowadays non-burning plasma fusion experiments when extending pulse lengths beyond 10 s, i.e. thermal load, erosion, deposition, and long-time signal integration in magnetic diagnostics. Problems arising from high power ECRH under conditions of incomplete absorption are outlined. Individual standard diagnostic systems are discussed to identify their specific problems as well as the opportunities connected with long pulse operation. Burning plasma experiments characterized by intense n-and g-radiation are briefly reviewed for reasons of completeness, dealing with radiation induced processes in windows, fibres, cables, and mirrors. Methods of data handling, real time monitoring, and plasma control are outlined. Index

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

Cited by 37 publications

References 14 publications

Nuclear technology aspects of ITER vessel-mounted diagnostics

Nuclear technology aspects of ITER vessel-mounted diagnostics

Design of the 48, 57 μm Poloidal Polarimeter for ITER

Diagnostics for steady state plasmas

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