Počet záznamů: 1
Mineral insulated cable assessment for inductive magnetic diagnostic sensors of a hot-wall tokamak
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SYSNO ASEP 0521626 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Mineral insulated cable assessment for inductive magnetic diagnostic sensors of a hot-wall tokamak Tvůrce(i) Torres, Andre (UFP-V)
Kovařík, Karel (UFP-V) RID, ORCID
Markovič, Tomáš (UFP-V) RID
Adámek, Jiří (UFP-V) RID, ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Carvalho, B.B. (PT)
Fernandes, H. (PT)
Hron, Martin (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RIDCelkový počet autorů 9 Číslo článku C09043 Zdroj.dok. Journal of Instrumentation. - : Institute of Physics Publishing - ISSN 1748-0221
Roč. 14, č. 9 (2019)Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Detector design and construction technologies and materials ; Plasma diagnostics-probes ; Special cables Obor OECD Fluids and plasma physics (including surface physics) Způsob publikování Omezený přístup Institucionální podpora UFP-V - RVO:61389021 UT WOS 000519117900006 EID SCOPUS 85074385842 DOI 10.1088/1748-0221/14/09/C09043 Anotace The COMPASS-U tokamak, designed to be a 5 T magnetic field device with a full-metal first wall and operating at plasma-facing component temperatures up to 500°C, will start its operation in 2022 at IPP Prague. This device will address ITER and DEMO relevant plasma exhaust physics, including operation with liquid metal divertor. Inductive magnetic diagnostics based on conductive loops of different geometry and orientation are crucial for magnetic confinement fusion devices. Due to the high temperatures of the vacuum vessel upon which they will be operated, a suitable cable insulation needs to be chosen carefully. Mineral-insulated cables (MIC) have proven to be compatible with high baking temperatures. However, the steel sheath of MIC attenuates the response of the sensor at higher frequencies which could affect real-time plasma control feedback and magnetic equilibrium reconstruction. In this work, characterization and testing of multiple MgO MIC of different diameters was conducted. A variety of electrical property measurements, such as frequency attenuation, resistance and capacitance, for each cable is presented, both at low and high temperatures up to 300°C. Cutoff frequencies from 65 kHz to 335 kHz were identified and attributed to the shielding in a flux loop configuration. Using an external RLC circuit, the frequency response of MIC coils is compared to an electrical model for shielded coils, yielding an useful calibrated model for future probe prototypes with different geometries in the frequency range of interest. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2020 Elektronická adresa https://iopscience.iop.org/article/10.1088/1748-0221/14/09/C09043
Počet záznamů: 1