Edge Thomson scattering diagnostic on COMPASS tokamak: Installation, calibration, operation, improvements

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4893995· OSTI ID:22303716

Bilkova, P.; Melich, R.; Sestak, D.; Weinzettl, V.; Stockel, J.; Hron, M.; Panek, R. ^[1]; Aftanas, M.; Stefanikova, E.; Janky, F.; Havlicek, J. ^[1]; Mikulin, O. ^[1]; Scannell, R.; Naylor, G. ^[2]; Frassinetti, L. ^[3]; Fassina, A. ^[4]; Walsh, M. J. ^[5]

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1. Institute of Plasma Physics ASCR, Za Slovankou 1782/3, 18200 Prague (Czech Republic)
2. CCFE, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom)
3. School of Electrical Engineering, Division of Fusion Plasma Physics, KTH Royal Institute of Technology, SE-100 44 Stockholm (Sweden)
4. Consorzio RFX, Corso Stati Uniti, 4-35127 Padua (Italy)
5. ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St Paul lez Durance (France)

The core Thomson scattering diagnostic (TS) on the COMPASS tokamak was put in operation and reported earlier. Implementation of edge TS, with spatial resolution along the laser beam up to ∼1/100 of the tokamak minor radius, is presented now. The procedure for spatial calibration and alignment of both core and edge systems is described. Several further upgrades of the TS system, like a triggering unit and piezo motor driven vacuum window shutter, are introduced as well. The edge TS system, together with the core TS, is now in routine operation and provides electron temperature and density profiles.

• OSTI ID: 22303716
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 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
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CALIBRATION
COMPASS-D TOKAMAK
ELECTRON TEMPERATURE
LASER RADIATION
PHOTON BEAMS
SHUTTERS
SPATIAL RESOLUTION
THOMSON SCATTERING
WINDOWS