Development of the novel method of the direct plasma potential measurements in magnetic confinement fusion devices.
Project ID:KJB100430601
Provider:Grant Agency of the Academy of Sciences
Period:Jan 01, 2006 - Dec 31, 2008
Principal Investigator:Mgr. Jiří Adámek
Co-investigatorsJ. Brotánková, R. Pánek, J. Stöckel

Aims of the project: The main request for the investigation of the electrostatic fluctuations and ExB drifts in edge plasma in magnetic confinement fusion devices is the time and space resolutions of the plasma potential(pp). Up to now, the heavy ion beam probe is used for the direct measurements of the pp, but this is complex and expensive diagnostic, suitable for the core plasma. The emissive probe, which operates only in the edge plasma, is relativly fragile and the interpretation of the measured data is still not clear. The main goal of the grant project is to develop the novel method suitable for the routine measurements of the pp in the edge plasma and test it on different devices (CASTOR,RFX,TORE-SUPRA). The method should satisfy the request for the time and space resolutions, long life time and simple construction. Project includes also the numerical simulations in the XOOPIC code, which will be used for the interpretation of the measured data.

Progress/Results: The measurements with Ball-pen probe on ASDEX Upgrade during the ELMy H-mode have proved the similar behavior of the probe as on CASTOR and RFX device. The modeling in XOOPIC code has been finished and a few of them were performed in SPICE2 code.

Results:

Adámek J., Stöckel J., Brotánková J., Horáček J., Rohde V., Müller H. W., Herrmann A., Schrittwieser R., Mehlmann F., Ionita C.: Direct measurements of the plasma potential in ELMy H-mode plasma with ball-pen probes on ASDEX Upgrade tokamak. Journal of Nuclear Materials 390-391 [-] (2009) 1114-1117. [ Abstract ] [ Link ]
[International Conference on Plasma-Surface Interactions in Controlled Fusion Device/18th./. Toledo, 26.05.2008-30.05.2008]

Adámek J., Stöckel J., Brotánková J., Pánek R., Kocan M., Gunn J. P., Martines E., Schrittwieser R., Ionita C., Popa G., Costin C., Van Oost G.: Simultaneous Measurements of Ion Temperature by Katsumata and Segmented Tunnel Probe. Contributions to Plasma Physics 48 [5-7] (2008) 395-399. [ Abstract ] [ Link ]
[International Workshop on Electrical Probes in Magnetized Plasmas/7th./. Praha, 22.07.2007-25.07.2007]

Brotánková J., Martines E., Adámek J., Popa G., Costin C., Schrittwieser R., Ionita C., Stöckel J., Van Oost G., van de Peppel L.: A NEW PROBE-BASED METHOD FOR MEASURING THE DIFFUSION COEFFICIENT IN THE TOKAMAK EDGE REGION. Proceedings of the 33rd EPS Conference on Plasma Physics. Frascati : European Physical Society, 2006 - (De Marco, F.; Vlad, G.) P-2.195-P-2.195. ISBN 2-914771-40-1. - (Europhysics Conference Abstracts. 301). [ Abstract ]
[EPS Conference on Plasma Physics /33rd./. Řím (IT), 19.06.2006-23.06.2006]

Brotánková J., Martines E., Adámek J., Popa G., Costin C., Schrittwieser R., Ionita C., Stöckel J., Van Oost G., van de Peppel L.: A PROBE-BASED METHOD FOR MEASURING THE TRANSPORT COEFFICIENT IN THE TOKAMAK EDGE REGION. Czechoslovak Journal of Physics 56 [12] (2006) 1321-1327. [ Abstract ]
[Workshop on the Electric Field, Structures, and Relaxation in Edge Plasma/9th./. Řím, 26.6.2006-27.6.2006]

Bolshakova I., Coccorese V., Ďuran I., Gerasimov S., Holyaka R., Moreau P., Stöckel J., JET EFDA Contributors.: Present-day experience in the use of galvanomagnetic radiation hard transducers in fusion devices. Proceedings, contributed papers. Kiev : -, 2006 - (Zagorodny, A.; Kocherga, O.) S. 1-4. [ Abstract ]
[International Congress on Plasma Physics/13th./. Kiev (UA), 22.05.2006-26.05.2006]

Schrittwieser R., Ionita C., Adámek J., Stöckel J., Brotánková J., Martines E., Popa G., Costin C., van de Peppel L., Van Oost G.: Direct measurements of the plasma potential by katsumata-type probes. Czechoslovak Journal of Physics 56 [8 suppl.B] (2006) 145-150. [ Abstract ]
[Symposium on Plasma Physics and Technology /22nd./. Praha, 26.6.2006-29.6.2006]

Schrittwieser R., Adámek J., Stöckel J., Brotánková J., Martines E., Popa G., Costin C., van de Peppel L., Van Oost G.: Direct measurements of the plasma potential by Katsumata-type probes. Europhysics Conference Abstracts ECA. Frascati : European Physical Society, 2006 - (De Marco, F.; Vlad, G.) P-4.080-P-4.080. ISBN 2-914771-40-1. - (Europhysics Conference Abstracts. ECA Vol.30I (2006). 301). [ Abstract ] [ Link ]
[EPS Conference on Plasma Physics/33rd./. Řím (IT), 19.06.2006-23.06.2006]