Correlation between non-ambipolar currents and divertor heat loads in the COMPASS tokamak
Abstract Electric current flowing onto the divertor of the COMPASS tokamak influences its heat loading. The current measured when a Langmuir probe is grounded to the divertor gives a local measurement of this heat loading, which, according to the classical theory of the Debye sheath, should be enhanced with respect to the case of locally ambipolar currents. The comparison of the calculated heat flux by probes with infrared thermography, when the influence of non-ambipolar currents is not considered, is grossly wrong; when the theoretical effect of non-ambipolar currents is included, however, the agreement is very good.
Authors
- R. Dejarnac (ORCID: https://orcid.org/0000-0003-1379-5474)
- M. Dimitrova (ORCID: https://orcid.org/0000-0001-6122-5172)
- R. Pánek (ORCID: https://orcid.org/0000-0002-6106-3422)
- D. Tskhakaya
- V. Weinzettl (ORCID: https://orcid.org/0000-0001-8936-7578)
- M. Hron (ORCID: https://orcid.org/0000-0003-3987-8040)
- J. Cavalier (ORCID: https://orcid.org/0000-0002-8501-9039)
- J.P. Gunn
- P. Vondráček (ORCID: https://orcid.org/0000-0003-0125-9252)
- P. K. Ivanova (ORCID: https://orcid.org/0000-0003-3320-917X)
- E Vasileva
- Embie Hasan
Institutions
- Bulgarian Academy of Sciences (BG)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- CEA Cadarache (FR)
- Czech Academy of Sciences, Institute of Plasma Physics (CZ)
- Institute of Electronics (BG)
Publication Details
- Journal
- Plasma Physics and Controlled Fusion
- Published
- 2024-09-27
- DOI
- https://doi.org/10.1088/1361-6587/ad80c8
- Citations
- 1
- Primary Topic
- Magnetic confinement fusion research
- Type
- article
- Field-Weighted Citation Impact
- 0.66
Funders
- Bulgarian National Science Fund