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Particle-in-cell Simulations of Flush-Mounted Probes
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SYSNO ASEP 0436704 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Particle-in-cell Simulations of Flush-Mounted Probes Author(s) Podolník, Aleš (UFP-V) ORCID
Komm, Michael (UFP-V) RID, ORCID
Dejarnac, Renaud (UFP-V) RID, ORCID
Pánek, Radomír (UFP-V) RID
Gunn, J. P. (FR)Source Title EPS2014:41st EPS Conference on Plasma Physics, 38F. - Mulhouse : European Physical Society, 2014 / Ratynskaia S. ; Mantica P. ; Benuzzi-Mounaix A. ; Dilecce G. ; Bingham R. ; Hirsch M. ; Kemnitz B. ; Klinger T. - ISBN 2-914771-90-8 Pages p1.041-p1.041 Number of pages 4 s. Publication form Online - E Action EPS Conference on Plasma Physics/41./ Event date 23.06.2014-27.06.2014 VEvent location Berlin Country DE - Germany Event type EUR Language eng - English Country FR - France Keywords Flush probe ; I-V characteristics ; simulation ; Particle-in-cell Subject RIV BL - Plasma and Gas Discharge Physics R&D Projects GAP205/11/2341 GA ČR - Czech Science Foundation (CSF) Institutional support UFP-V - RVO:61389021 Annotation In order to investigate plasma properties in the scrape-off layer, flush-mounted probes are frequently used in divertors or limiters. However, the presence of the magnetic field causes significant effects on the acquired I-V characteristics. This influence can be studied using Particle-in-Cell simulations. In this study, we use a cartesian 2D3V PIC code SPICE2 code to examine the dependencies of I-V characteristics on magnetic field grazing angle and magnitude and to relate them to known plasma parameters. Both flat and rounded probe tip geometry are investigated in the wide range of incident field line angles using the probe geometry based on the dedicated HFS limiter used on COMPASS tokamak. The I-V characteristics are analysed using a standard 3-parameter and 4-parameter procedures and the yielded values of Te and density are compared to input parameters. A semi-empirical rule for the slope of ion current is derived and can be used in analysis of experimental data. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2015
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