Testing a prediction model for the H-mode density pedestal against JET-ILW pedestals

0573320 - ÚFP 2024 RIV US eng J - Journal Article
Saarelma, S. - Connor, J. W. - Bílková, Petra - Böhm, Petr - Field, A.R. - Frassinetti, L. - Fridström, R. - Kirk, A.
Testing a prediction model for the H-mode density pedestal against JET-ILW pedestals.
Nuclear Fusion. Roč. 63, č. 5 (2023), č. článku 052002. ISSN 0029-5515. E-ISSN 1741-4326
EU Projects: European Commission(BE) 101052200
Institutional support: RVO:61389021
Keywords : density * jet * pedestal * prediction
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.3, year: 2022
Method of publishing: Open access
https://iopscience.iop.org/article/10.1088/1741-4326/acc084

The neutral ionisation model proposed by Groebner et al (2002 Phys. Plasmas 9 2134) to determine the plasma density profile in the H-mode pedestal, is extended to include charge exchange processes in the pedestal stimulated by the ideas of Mahdavi et al (2003 Phys. Plasmas 10 3984). The model is then tested against JET H-mode pedestal data, both in a ‘standalone’ version using experimental temperature profiles and also by incorporating it in the Europed version of EPED. The model is able to predict the density pedestal over a wide range of conditions with good accuracy. It is also able to predict the experimentally observed isotope effect on the density pedestal that eludes simpler neutral ionization models.
Permanent Link: https://hdl.handle.net/11104/0343783