Diverted negative triangularity plasmas on DIII-D: the benefit of high confinement without the liability of an edge pedestal

• Published in: Nuclear fusion Vol. 61; no. 11
• Main Authors: Marinoni, Alessandro, Austin, Max E., Hyatt, A. W., Saarelma, Samuli, Scotti, Filippo, Yan, Zheng, Chrystal, Colin, Coda, Stefano, Glass, F., Hanson, Jeremy M., McLean, Adam G., Pace, David C., Paz-Soldan, Carlos, Petty, Craig C., Porkolab, Miklos, Schmitz, Lothar, Sciortino, Francesco, Smith, Sterling P., Thome, Kathreen E., Turco, Francesca
• Format: Journal Article
• Language: English
• Published: United States IOP Science 23.09.2021
• Subjects: 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Ballooning; ELM; Negative triangularity; Reactor; TEM

Diverted discharges at negative triangularity on the DIII-D tokamak sustain normalized confinement and pressure levels typical of standard H-mode scenarios (H98y,2≅1, βN≅3) without developing an edge pressure pedestal, despite the auxiliary power far exceeding the L → H power threshold expected from...