Comparison of the scrape-off layer two-point model for deuterium and helium plasmas in JET ITER-like wall low-confinement plasma conditions

The hydrogenic two-point model (H-2PM), an analytical model for the scrape-off layer that predicts a common electron and ion temperature and density along a flux tube from a target temperature and density, is adapted to a single-species helium (He) model, preserving the 2PM assumptions and analytical nature. Across a range of densities and heating powers, the predicted (Formula presented.) is within (Formula presented.) of upstream measurements by high-resolution Thomson scattering (HRTS) for low-confinement He plasmas performed in JET ITER-like wall (JET-ILW). For high-recycling conditions, He-2PM predictions of (Formula presented.) were within 10% of the Li-beam diagnostic measurements, excluding the near-SOL, when assuming (Formula presented.), suggesting the divertor SOL was not fully ionised in the JET-ILW He plasmas.

Description

Keywords

2PM, He-2PM, helium, JET, SOL

DOI

10.1002/ctpp.202300108

Citation

Rees, D, Sissonen, J, Groth, M, Rikala, V P, Kumpulainen, H, Thomas, B & Brix, M 2024, ' Comparison of the scrape-off layer two-point model for deuterium and helium plasmas in JET ITER-like wall low-confinement plasma conditions ', Contributions to Plasma Physics, vol. 64, no. 7-8, e202300108 . https://doi.org/10.1002/ctpp.202300108

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202410096663

Collections

[article-cris] Perustieteiden korkeakoulu / SCI

Show all metadata

Comparison of the scrape-off layer two-point model for deuterium and helium plasmas in JET ITER-like wall low-confinement plasma conditions

Access rights

URL

Journal Title

Journal ISSN

Volume Title

Authors

Date

Department

Major/Subject

Mcode

Degree programme

Language

Pages

Series

Abstract

Description

Keywords

Other note

DOI

Citation

Permanent link to this item

Collections