Work

Edge radial electric field in positive and negative triangularity plasmas in the TCV tokamak

Year: 2025

Type: article

Abstract: We present the first edge E r measurements in negative triangularity (NT) plasmas in the Tokamak à Configuration Variable (TCV). The Doppler backscattering measurements of v ⊥ ≈ E r / B reveal a significant impact of triangularity on the E r well: in Ohmic, neutral beam injection, and electron cyclotron resonance heated discharges, the E r well and associated E r × B shear are stronger in NT-shaped plasmas compared to their positive triangularity (PT) counterpart. This suggests a connection to the concomitant NT performance gain relative to PT L-mode.

Source: Nuclear Fusion

DOI: 10.1088/1741-4326/ae19fd

Authors: S. Rienäcker, P. Hennequin, L. Vermare, C. Honoré, R. Bouffet-Klein, S. Coda, B. Labit, B. Vincent, K.E. Thome, O. Krutkin, A. Balestri, Y. Nakeva, the TCV Team

Institutions: Laboratoire de Physique des Plasmas, École Normale Supérieure Paris-Saclay, General Atomics (United States), Università degli Studi della Tuscia

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,595

Funders: U.S. Department of Energy, EUROfusion, Agence Nationale de la Recherche, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Awards: G3562821882, Plasma Science and Training, THE DIII-D NATIONAL FUSION PROGRAM AND ADVANCED FUSION TECHNOLOGY RESEARCH AND DEVELOPMENT

OpenAlex ID: W4415753922

FWCI: 1.894

Cites: 52

Cited by: 4

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