First Results of ELM Triggering With a Multichamber Lithium Granule Injector Into EAST Discharges

Journal Article · Tue Dec 12 00:00:00 EST 2017 · IEEE Transactions on Plasma Science

DOI:https://doi.org/10.1109/TPS.2017.2773095· OSTI ID:1415985

Sun, Z.  ^[1]; Lunsford, R. ^[2]; Maingi, R. ^[2]; Hu, J. S. ^[3]; Mansfield, D. K. ^[2]; Diallo, A. ^[2]; Tritz, K. ^[4]; Canik, J.  ^[5]; Wang, Z. ^[6]; Andruczyk, D.  ^[7]; Wang, Y. M. ^[1]; Zuo, G. Z. ^[1]; Huang, M. ^[1]; Xu, W. ^[1]; Meng, X. C. ^[1]

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1. Chinese Academy of Sciences, Hefei (China)
2. Princeton Univ., Princeton, NJ (United States). Princeton Plasma Physics Lab.
3. Chinese Academy of Sciences, Hefei (China); CAS key Lab. of Photovoltaic and Energy Conservation Materials, Hefei (China)
4. Johns Hopkins Univ., Baltimore, MD (United States)
5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
6. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
7. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)

A critical challenge facing the basic long-pulse H-mode for ITER is to control edge-localized modes (ELMs). A new method using a multichamber lithium (Li) granule injector (LGI) for ELM triggering experiments has been developed in Experimental Advanced Superconducting Tokamak (EAST). First experimental results of the control of ELMs are obtained in EAST with a tungsten divertor. It is found that the injector has good capacities, i.e., allowing good flexibilities in granule size selection, injection rate, and injection velocity. In conclusion, LGI has successfully triggered ELMs during the H-mode. These results indicate the LGI would be a promising method to control ELMs in long-pulse steady-state tokamaks.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE
• Grant/Contract Number: 2017YFA0402500; 11625524; 11605246; 11775261; AC02-09CH11466
• OSTI ID: 1415985
• Journal Information: IEEE Transactions on Plasma Science, Vol. 46, Issue 5; ISSN 0093-3813
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Edge localized modes (ELM)
Experimental Advanced Superconducting Tokamak (EAST)
lithium (Li) granule injection (LGI)