Design and fabrication of a new compound probe for plasma flux measurement in IR-T1 tokamak

A new compound probe is designed, built, and installed on an IR-T1 tokamak to flow measurements in the plasma edge region. The first results of using this probe on the IR-T1 tokamak are presented. The plasma parameters such as plasma current, loop voltage, floating potential, ion and electron satura...

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Bibliographic Details
Published in:Review of scientific instruments 2017-09, Vol.88 (9), p.093516-093516
Main Authors: Alipour, R., Ghoranneviss, M., Salar Elahi, A.
Format: Article
Language:English
Subjects:
Electron energy
Flow velocity
Mach number
Parallel flow
Plasma
Plasma currents
Plasma flux measurement
Scientific apparatus & instruments
Tokamak devices
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Description
Summary:A new compound probe is designed, built, and installed on an IR-T1 tokamak to flow measurements in the plasma edge region. The first results of using this probe on the IR-T1 tokamak are presented. The plasma parameters such as plasma current, loop voltage, floating potential, ion and electron saturation currents, electron temperature, plasma potential, and plasma flow velocities are measured in this work. The results show that the electron temperature and the plasma potential in the edge area are 14 eV and 44 V, respectively. The results indicate that the mean value of a parallel Mach number is 0.5 while the mean value of a perpendicular Mach number is almost zero. The large parallel flow velocity (about 17 km/s) and the negligible perpendicular flow velocity are also seen in this work. The most important advantage of using this compound probe is that it can not only save space and vacuum ports but also measure more physical quantities at the same time, contributing to further physical analysis.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4994037