Work

First achievement of 100 million degree electron temperatures in a spherical torus: the EXL-50U

Year: 2026

Type: preprint

Abstract: Here,we report an ST plasma in which Thomson scattering measures a central electron temperature exceeding 8.6 keV (100 million degrees kelvin) on the EXL-50U spherical torus device.The high-temperature phase is obtained at low density by sequential operation of two 50 GHz ECRH systems: ordinary-mode (O-mode) ECRH3 followed by extraordinary-mode (X-mode) ECRH4. In contrast to neutral-beam-heated high-ion-temperature ST scenarios, the discharge is sustained by ECRH only.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.14684

Authors: Yang, Guang, Song, Shaodong, Li, Songjian, Xie, Xiaobing, Wang, Zhaokun, Gu, Xiang, Li, Jia, Huang, Xianli, Jiang, Xinchen, Guan, Yupeng, Ma, Huicong, Lin, Junquan, Guo, Dong, Dong, Jiaqi, Liang, Yunfeng, Shi, Yuejiang, Team, the EXL-50U

Institution: Southwestern Institute of Physics

Language: English

Topic: Magnetic confinement fusion research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W7221835507

Cites: 8

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Related to: 10