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Title: Characteristics of Energy Transport of Li-conditioned and non-Li-conditioned Plasmas in the National Spherical Torus Experiment (NSTX)

Abstract

The transport properties of NSTX plasmas obtained during the 2008 experimental cam- paign have been studied and are reported here. Transport trends and dependences have been isolated, and it is found that both electron and ion energy transport coefficients have strong dependences on local values of nΔT, which in turn is strongly dependent on local current density profile. Without identifying this dependence, it is difficult to identify others, such as the dependence of transport coefficients on Bp (or q), Ip and Pheat. In addition, a comparison between discharges with and without Lithium wall conditioning has been made. While the trends in the two sets of data are similar, the thermal transport loss, especially in the electron channel, is found to strongly depend on the amount of Lithium deposited, decreasing by up to 50% of its no-Lithium value.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
968006
Report Number(s):
PPPL-4468
TRN: US1000342
DOE Contract Number:  
DE-ACO2-09CH11466
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CURRENT DENSITY; ELECTRONS; LITHIUM; TRANSPORT; Confinement, Transport Coeffic ients, Spherical Torus

Citation Formats

Ding, S., Kaye, S. M., Bell, R. E., Kaita, R., Kugel, H., LeBlanc, B. P., Paul, S., and Wan, B. Characteristics of Energy Transport of Li-conditioned and non-Li-conditioned Plasmas in the National Spherical Torus Experiment (NSTX). United States: N. p., 2009. Web. doi:10.2172/968006.
Ding, S., Kaye, S. M., Bell, R. E., Kaita, R., Kugel, H., LeBlanc, B. P., Paul, S., & Wan, B. Characteristics of Energy Transport of Li-conditioned and non-Li-conditioned Plasmas in the National Spherical Torus Experiment (NSTX). United States. https://doi.org/10.2172/968006
Ding, S., Kaye, S. M., Bell, R. E., Kaita, R., Kugel, H., LeBlanc, B. P., Paul, S., and Wan, B. 2009. "Characteristics of Energy Transport of Li-conditioned and non-Li-conditioned Plasmas in the National Spherical Torus Experiment (NSTX)". United States. https://doi.org/10.2172/968006. https://www.osti.gov/servlets/purl/968006.
@article{osti_968006,
title = {Characteristics of Energy Transport of Li-conditioned and non-Li-conditioned Plasmas in the National Spherical Torus Experiment (NSTX)},
author = {Ding, S. and Kaye, S. M. and Bell, R. E. and Kaita, R. and Kugel, H. and LeBlanc, B. P. and Paul, S. and Wan, B.},
abstractNote = {The transport properties of NSTX plasmas obtained during the 2008 experimental cam- paign have been studied and are reported here. Transport trends and dependences have been isolated, and it is found that both electron and ion energy transport coefficients have strong dependences on local values of nΔT, which in turn is strongly dependent on local current density profile. Without identifying this dependence, it is difficult to identify others, such as the dependence of transport coefficients on Bp (or q), Ip and Pheat. In addition, a comparison between discharges with and without Lithium wall conditioning has been made. While the trends in the two sets of data are similar, the thermal transport loss, especially in the electron channel, is found to strongly depend on the amount of Lithium deposited, decreasing by up to 50% of its no-Lithium value.},
doi = {10.2172/968006},
url = {https://www.osti.gov/biblio/968006}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Oct 21 00:00:00 EDT 2009},
month = {Wed Oct 21 00:00:00 EDT 2009}
}