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Progress in pedestal and edge physics: Chapter 3 of the special issue: on the path to tokamak burning plasma operation
Lawrence Livermore National Laboratory, PO Box 808, Livermore, CA 94550, United States of America.
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics. KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Electromagnetic Engineering and Fusion Science.ORCID iD: 0000-0002-9546-4494
Institute of Plasma Physics, CAS, PO Box 1126, Hefei 230031, China.
Number of Authors: 432025 (English)In: Nuclear Fusion, ISSN 0029-5515, E-ISSN 1741-4326, Vol. 65, no 5, article id 053001Article, review/survey (Refereed) Published
Abstract [en]

This paper describes the extensive progress that has been made in the understanding of tokamak pedestal physics since the 2007 publication of ‘Progress in the ITER Physics Basis’ (Ikeda 2007 Nucl. Fusion 47 E01-S500). It serves as Chapter 3 of the 2025 Nuclear Fusion Special Issue titled ‘On the Path to Tokamak Burning Plasma Operation’ (Campbell et al 2025 Nucl. Fusion). This review was compiled by the pedestal and edge physics (PEP) community affiliated with the International Tokamak Physics Activity organization. It attempts to collect in one place citations to the majority of published literature on the pedestal physics topics that will be most important for the operation of a future power producing burning plasma tokamak. These include citations to publications describing the physics of the pedestal plasmas in many operating tokamaks worldwide and the pedestal physics projections for several near-term future devices including ITER. Descriptions of experimental results, interpretive modeling and predictive extrapolations are integrated together and comprehensive references are provided. This review is organized around four primary technical sections, viz.: pedestal structure, edge localized mode (ELM) characteristics, ELM control and regimes without large ELMs. Key results from many of the references are described briefly and set into the tokamak burning plasma power plant context. In addition, different perspectives on pedestal physics topics that are currently under debate within the community are also described, to provide guidance on needs for future research. Finally, attempts are made to describe conclusions from all of this progress consistent with discussions by the pedestal physics community at this time. The goal of this review is to provide a useful reference document for pedestal physics researchers going forward toward operation of a burning tokamak fusion plasma.

Place, publisher, year, edition, pages
IOP Publishing , 2025. Vol. 65, no 5, article id 053001
Keywords [en]
burning plasma, edge pedestal structure, ELM characteristics, ELM control, regimes without large ELMs, tokamak
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-363475DOI: 10.1088/1741-4326/adb1f3ISI: 001479150400001Scopus ID: 2-s2.0-105004195968OAI: oai:DiVA.org:kth-363475DiVA, id: diva2:1958546
Note

QC 20250619

Available from: 2025-05-15 Created: 2025-05-15 Last updated: 2025-06-19Bibliographically approved

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Frassinetti, Lorenzo

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