Radiofrequency and mechanical tests of silver coated CuCrZr contacts for the ITER ion cyclotron antenna

Autor: Jérôme Marc Delaplanche, Nicolas Charabot, Raphaël Laloo, Gilles Lombard, Jean Claude Hatchressian, B. Beaumont, Francois Calarco, Yuntao Song, Patrick Mollard, Qingquan Xi Yang, Jean-Michel Bernard, R. Volpe, Vincent Bruno, Julien Hillairet, Zhaoxi Chen, P. U. Lamalle, Viviane Turq, Karl Vulliez, F. Kazarian
Přispěvatelé: Institut de Recherche sur la Fusion par confinement Magnétique ( IRFM ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Centre interuniversitaire de recherche et d'ingenierie des matériaux ( CIRIMAT ), Institut National Polytechnique [Toulouse] ( INP ) -Université Paul Sabatier - Toulouse 3 ( UPS ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Etanchéité ( LE ), Institute of Plasma Physics, Chinese Academy of Sciences ( ASIPP ), ITER [St. Paul-lez-Durance], ITER, Institut de Recherche sur la Fusion par confinement Magnétique (IRFM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Laboratoire d'Etanchéité (LE), Institute of Plasma Physics, Chinese Academy of Sciences (ASIPP), ITER organization (ITER), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE), Centre National de la Recherche Scientifique - CNRS (FRANCE), Chinese Academy of Sciences (CHINA), Institut National Polytechnique de Toulouse - INPT (FRANCE), ITER Organisation, Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Rok vydání: 2018
Předmět:
Ion cyclotron resonance heating
Materials science
Matériaux
[ SPI.MAT ] Engineering Sciences [physics]/Materials
Cyclotron
FOS: Physical sciences
01 natural sciences
[SPI.MAT]Engineering Sciences [physics]/Materials
010305 fluids & plasmas
law.invention
Resonator
[PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
law
Transmission line
ITER
0103 physical sciences
General Materials Science
Electrical conductor
Civil and Structural Engineering
010302 applied physics
business.industry
Mechanical Engineering
Electrical contacts
[SPI.PLASMA]Engineering Sciences [physics]/Plasmas
RF power amplifier
[ PHYS.PHYS.PHYS-PLASM-PH ] Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph]
Physics - Plasma Physics
Plasma Physics (physics.plasm-ph)
[SPI.ELEC]Engineering Sciences [physics]/Electromagnetism
Radio-frequency
Nuclear Energy and Engineering
[ SPI.ELEC ] Engineering Sciences [physics]/Electromagnetism
Optoelectronics
Radio frequency
[ SPI.PLASMA ] Engineering Sciences [physics]/Plasmas
Coaxial
business
Zdroj: Fusion Engineering and Design
Fusion Engineering and Design, Elsevier, 2018, 129, 〈https://www.sciencedirect.com/science/article/pii/S0920379618301480〉. 〈10.1016/j.fusengdes.2018.02.047〉
Fusion Engineering and Design, Elsevier, 2018, 129, ⟨10.1016/j.fusengdes.2018.02.047⟩
Fusion Engineering and Design, 2018, 129, ⟨10.1016/j.fusengdes.2018.02.047⟩
ISSN: 0920-3796
DOI: 10.1016/j.fusengdes.2018.02.047
Popis: The ITER Ion Cyclotron Resonance Heating (ICRH) system is designed to couple to the plasma 20 MW of RF power from two antennas in the 40-55 MHz frequency range during long pulses of up to 3600 s and under various plasma conditions with Edge Localized Modes. Radio-Frequency (RF) contacts are integrated within the ITER ICRH launcher in order to ensure the RF current continuity and ease the mechanical assembly by allowing the free thermal expansion of the Removable Vacuum Transmission Line coaxial conductors during RF operations or during 250{\textdegree}C baking phases. A material study has been carried out to determine which materials and associated coatings are relevant for RF contacts application in ITER. In parallel, RF tests have been performed with a new prototype of Multi-Contact (r) LA-CUT/0,25/0 contacts made of silver-coated CuCrZr louvers. During these tests on a RF vacuum resonator, currents between 1.2 kA and 1.3 kA peak have been reached a few tens of times in steady-state conditions without any visible damage on the louvers. A final 62MHz pulse ending in a 300s flat top at 1.9kA resulted in severe damage to the contact. In addition, a test bed which performs sliding test cycles has been built in order to reproduce the wear of the contact prototype after 30 000 sliding cycles on a 3 mm stroke at 175{\textdegree}C under vacuum. The silver coating of the louvers is removed after approximately a hundred cycles whilst, to the contrary, damage to the CuCrZr louvers is relatively low.
Fusion Engineering and Design, Elsevier, A Para{\^i}tre
Databáze: OpenAIRE
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