Design optimization of RF lines in vacuum environment for the MITICA experiment

Journal Article · Mon Feb 15 00:00:00 EST 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4933017· OSTI ID:22482978

Pavei, Mauro; Rossetto, Federico; Marcuzzi, Diego ^[1]; Miorin, Enrico; Deambrosis, Silvia M. ^[2]

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1. Consorzio RFX, Corso Stati Uniti, 4, I-35127 Padova (Italy)
2. IENI-CNR, Corso Stati Uniti, 4, I-35127 Padova (Italy)

This contribution regards the Radio Frequency (RF) transmission line of the Megavolt ITER Injector and Concept Advancement (MITICA) experiment. The original design considered copper coaxial lines of 1″ 5/8, but thermal simulations under operating conditions showed maximum temperatures of the lines at regime not compatible with the prescription of the component manufacturer. Hence, an optimization of the design was necessary. Enhancing thermal radiation and increasing the conductor size were considered for design optimization: thermal analyses were carried out to calculate the temperature of MITICA RF lines during operation, as a function of the emissivity value and of other geometrical parameters. Five coating products to increase the conductor surface emissivity were tested, measuring the outgassing behavior of the selected products and the obtained emissivity values.

• OSTI ID: 22482978
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 2; Other Information: (c) 2015 EURATOM; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
EMISSIVITY
ITER TOKAMAK
MANUFACTURERS
OPERATION
OPTIMIZATION
POWER TRANSMISSION LINES
RADIOWAVE RADIATION
SIMULATION
THERMAL ANALYSIS
THERMAL RADIATION