Thomson scattering on COMPASS – commissioning and first data

0376781 - ÚFP 2013 RIV GB eng J - Journal Article
Aftanas, Milan - Böhm, Petr - Scannell, R. - Tripsky, M. - Weinzettl, Vladimír - Hron, Martin - Pánek, Radomír - Stöckel, Jan - Walsh, M. - Bílková, Petra
Thomson scattering on COMPASS – commissioning and first data.
Journal of Instrumentation. Roč. 7, č. 1 (2012), C01074-C01074. ISSN 1748-0221. E-ISSN 1748-0221.
[INTERNATIONAL CONFERENCE ON LASER AIDED PLASMA DIAGNOSTICS/15./. Jeju, 13.10.2011-19.10.2011]
R&D Projects: GA ČR GA202/09/1467
Institutional research plan: CEZ:AV0Z20430508
Keywords : Thomson scattering * electron temperature * laser diagnostic * Plasma diagnostics - charged-particle spectroscopy * Plasma diagnostics - interferometry * spectroscopy and imaging * tokamak
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 1.656, year: 2012
http://iopscience.iop.org/1748-0221/7/01/C01074/pdf/1748-0221_7_01_C01074.pdf

High-resolution edge and core Thomson scattering systems have been designed with the main aim to investigate electron density and temperature profiles on the COMPASS tokamak (R = 0.56 m, a = 0.18 m, BTmax = 2.1 T). The spatial resolution is optimized namely for the pedestal studies (radial spatial resolution ~ a/100). Currently, the core Thomson scattering system is commissioned, calibrated and tested in tokamak discharges. This contribution describes particular steps of optical alignment and calibrations. Moreover, we show control tools developed for electronic settings, calibrating procedures and laser beam position measurement. Both the calibration data, i.e. Raman scattering obtained in the N2 at pressures up to 200 mbar, and the first Thomson scattering data measured by the system in the H discharges are presented.
Permanent Link: http://hdl.handle.net/11104/0209097