Aachen PK 2003 – scientific programme
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P: Plasmaphysik
P 7: Plasma Diagnostics
P 7.1: Talk
Tuesday, March 18, 2003, 15:30–15:50, FO1
10 kHz Repetitive high spatial resolution TV Thomson scattering on the TEXTOR tokamak — •Hennie van der Meiden1, Rolie Barth1, Theo Oyevaar1, Sanjeev Varshney1, Tony Donné1, Niek Lopes Cardozo1, Chris Schuller1, Michael Kantor2, Denis Kouprienko2, Wolfgang Biel3, and Albrecht Pospieszczyk3 — 1FOM-Instituut voor Plasmafysica ’Rijnhuizen’, PO Box 1207, 3430 BE Nieuwegein, The Netherlands — 2Ioffe Institute, St. Petersburg, 194021 Russia — 3Institut fur Plasmaphysik, FZ Julich, D-52425 Julich, Germany
In the summer of 2003 the high repetition rate and high spatial resolution TVTS system will become operational on the TEXTOR tokamak. The aim is, to study the dynamic behaviour of meso scale plasma phenomena, like MHD modes, transport barriers and edge phenomena. To reach this, a 1-20 kHz intracavity laser system is combined with 2 fast Phantom V7.0 CMOS cameras. During one discharge of TEXTOR three bursts of about 50 pulses can be extracted from the laser system with a time separation of more than 1 s between the bursts. This new equipment will be implemented on the beam line and spectrometer of the present double pulse TVTS system of TEXTOR. The new TVTS system will be capable of producing three times 50 electron temperature- and density profiles along a laser chord of 900 mm with a spatial resolution of 7.5 mm for the full plasma diameter and 2 mm for the edge region, respectively. An observational error of 8% on Te and 4% on ne is expected for ne = 2.5 1019 m−3, using a laser pulse energy of typical 15 J. A description and the expected system performance will be presented here.