Results 1 to 10 of about 7,651 (149)

Plasma heating and improvement of lower hybrid current drive efficiency by electron cyclotron waves on EAST [PDF]

EPJ Web of Conferences, 2023
The electron cyclotron (EC) system on EAST consists of four gyrotrons with a frequency of 140 GHz (second harmonic of the extraordinary mode), each of which is expected to deliver a maximum power of 1.0 MW and be operated at 100-1000 s pulse length ...
Li Miaohui, Xu Handong, Wang Xiaojie, Wang Mao, Ding Bojiang, Xu Weiye, Wu Dajun, Tang Yunying, Zhang Liyuan, Wu Zege, Wang Jian, Zhang Tao, Wang Hanlin, Zang Qing, Zhao Hailin, Liu Haiqing, Qian Jinping, Gong Xianzu, Liu Fukun, Zou Xiaolan   +19 more
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Radial localization of electron temperature pedestal and ELM-like events using ECE measurements at Wendelstein 7-X [PDF]

EPJ Web of Conferences, 2023
A magnetic configuration scan was performed at Wendelstein 7-X stellarator by varying the rotational transform to analyze the plasma confinement for magnetic configurations with different edge magnetic island locations and sizes.
Chaudhary N., Hirsch M., Andreeva T., Geiger J., Hoefel U., Rahbarnia K., Wurden G. A., Wolf R. C.   +7 more
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Investigation of the Water Draining Process Pushed by Gas for U-Type and Z-Type Manifolds

Science and Technology of Nuclear Installations, 2022
In the experimental advanced superconducting tokamak (EAST), the cooling channels of plasma-facing components (PFCs) are familiarly connected in parallel through manifolds. According to the drainage performance of the PFCs, the amount of water trapped in
Weibao Li, Lei Yang, Junling Chen, Jiansheng Hu, Bin Guo, Lili Zhu   +5 more
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Current status of ECE system on EAST tokamak [PDF]

EPJ Web of Conferences, 2023
The electron cyclotron emission (ECE) diagnostic on the experimental advanced superconducting tokamak (EAST) has had a major upgrade since 2020, when EAST heating system also went through a significant upgrade, including one NBI system changed from ...
Zhao Hailin, Ti Ang, Zhou Tianfu, Zhu Zeying, Liu Yong, Ling Bili, Zang Qing, Huang Juan, Gong Xianzu   +8 more
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All superconducting tokamak: EAST

AAPPS Bulletin, 2023
Experimental Advanced Superconducting Tokamak (EAST) was built to demonstrate high-power, long-pulse operations under fusion-relevant conditions, with major radius R = 1.9 m, minor radius a = 0.5 m, and design pulse length up to 1000s.
Jiansheng Hu, Weibin Xi, Jian Zhang, Liansheng Huang, Damao Yao, Qing Zang, Yanlan Hu, Guizhong Zuo, Qiping Yuan, Jinping Qian, Zhiwei Zhou, Xinjun Zhang, Mao Wang, Handong Xu, Yahong Xie, Zhengchu Wang, Haiqing Liu, Youwen Sun, Liang Wang, Guoqiang Li, Hongxing Yin, Yao Yang, Xianzu Gong, Kun Lu, Guosheng Xu, Junling Chen, Fukun Liu, Jiangang Li, Yuntao Song, the EAST team   +29 more
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Recent progress of the development of a long pulse 140GHz ECRH system on EAST [PDF]

EPJ Web of Conferences, 2019
A long pulse ECRH system with a goal of 140GHz 4MW 100~1000s has been developed to meet the requirement of steady-state operation on EAST. Gycom gyrotrons are employed in the No.1 and No.3 systems, CPI gyrotrons are used in the No.2 and No.4 systems. The
Xu Handong, Wang Xiaojie, Zhang Jian, Liu Fukun, Huang Yiyun, Shan Jiafang, Xu Weiye, Li Miaohui, Lohr J., Gorelov Y.A., Anderson J.P., Zhang Yang, Wu Dajun, Hu Huaichuan, Yang Yong, Feng Jianqiang, Tang Yunying, Li Bo, Ma Wendong, Wu Zege, Wang Jian, Zhang Liyuan, Guo Fei, Sun Haozhang, Yan Xinsheng   +24 more
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Effects of density turbulence on helicon wave propagation in the core plasmas [PDF]

EPJ Web of Conferences
Radio frequency wave propagation can be significantly affected by density irregularities, such as filaments in the scrape-off layer or instabilities in the core plasma.
Kim Eun-Hwa, Shiraiwa Syun’ichi, Ku Seung-Hoe, Bortolon Alessandro, Van Compernolle Bart, Ono Masayuki, Bertelli Nicola, Pinsker Robert   +7 more
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Full-wave modeling of RF waves in fusion plasmas with finite element method: Progress in past decades and its future role [PDF]

EPJ Web of Conferences
This paper reviews the progress in computing radio frequency (RF) wave fields in fusion plasmas, specifically focusing on simulations utilizing the finite element method (FEM) over the past few decades. Computing RF wave fields in fusion plasmas presents
Shiraiwa Syun’ichi, Bertelli Nicola, Kim Eun-Hwa, Wright John, Verstraeten Maja, Lamalle Philippe   +5 more
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Appearance and analysis of a reflecting coating damage [PDF]

EPJ Web of Conferences
Eight reflecting gratings are installed into the plasma facing wall of ASDEX Upgrade (AUG) in order to provide a controlled second pass through the plasma centre in 140 GHz heating scenarios with reduced single pass absorption. Four of these gratings are
Schubert Martin, Elgeti Stefan, Hunger Katja, Grigore Eduard, Ruset Cristian, Neu Rudolf, Stober Jörg, Vorbrugg Stefan, Zammuto Irene   +8 more
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Intense intermittent radiation at the plasma frequency on EAST [PDF]

EPJ Web of Conferences, 2019
Intense intermittent radiation has been observed regularly in EAST by using a Michelson interfer-ometer and a Q-band radiometer system. The radiation bursts are related to a fast process with characterization time of a few microseconds.
Liu Yong, Zhou Tianfu, Hu Yemin, Zhao Hailin, Zhu Zeying, Liu Xiang, Ling Bili, Zhou Ruijie, Zhang Tao   +8 more
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