High-resolution Thomson scattering system on the COMPASS tokamak: Evaluation of plasma parameters and error analysis

Journal Article · Mon Oct 15 00:00:00 EDT 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4743956· OSTI ID:22093946

Aftanas, M. ^[1]; Bohm, P.; Bilkova, P.; Weinzettl, V.; Zajac, J.; Zacek, F.; Stockel, J.; Hron, M.; Panek, R. ^[1]; Scannell, R. ^[2]; Walsh, M. J. ^[3]

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1. Institute of Plasma Physics AS CR, v.v.i., Za Slovankou 3, 182 00 Prague 8 (Czech Republic)
2. Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, Oxfordshire OX14 3DB (United Kingdom)
3. ITER Organization, CS 90 046, St Paul lez Durance Cedex 13067 (France)

The electron density and temperature profiles measured by the Thomson scattering diagnostic on the COMPASS tokamak are used for estimation of electron kinetic energy, energy confinement time, and effective charge number Z{sub eff}. Data are compared with the line-integrated electron density measured by a microwave interferometer in an ohmically heated plasma with a circular cross section. An error analysis of both electron temperature and density are performed by two methods-a constant chi-square boundaries method and a Monte Carlo simulation, determining asymmetrical error bars for the electron temperature.

• OSTI ID: 22093946
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 10; Other Information: (c) 2012 Euratom; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COMPASS-D TOKAMAK
COMPUTERIZED SIMULATION
CONFINEMENT TIME
CROSS SECTIONS
EFFECTIVE CHARGE
ELECTRON DENSITY
ELECTRON TEMPERATURE
INTERFEROMETERS
ION TEMPERATURE
MICROWAVE RADIATION
MONTE CARLO METHOD
PLASMA
PLASMA CONFINEMENT
PLASMA DENSITY
PLASMA DIAGNOSTICS
RESOLUTION
THOMSON SCATTERING