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Title: Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner

Abstract

The focus of the field-reversed configuration (FRC) experiment with a liner (FRX-L) is the formation of a target FRC plasma for magnetized target fusion experiments. An FRC plasma with density of 10{sup 23} m{sup -3}, total temperature in the range of 150-300 eV, and a lifetime of {approx_equal}20 {mu}s is desired. Field-reversed {theta}-pinch technology is used with programed cusp fields at {theta}-coil ends to achieve non-tearing field line reconnections during FRC formation. Well-formed FRCs with density between (2-4)x10{sup 22} m{sup -3}, lifetime in the range of 15-20 {mu}s, and total temperature between 300-500 eV are reproducibly created. Key FRC parameters have standard deviation in the mean of 10% during consecutive shots. The FRCs are formed at 50 mTorr deuterium static fill using 2 kG net reversed bias field inside the {theta}-coil confinement region, with external main field unexpectedly ranging between 15-30 kG. The high-density FRCs confinement properties are approximately in agreement with empirical scaling laws obtained from previous experiments with fill pressure mostly less than 20 mTorr. Analyses in this paper reveal that reducing the external main field modulation and/or extending the {theta}-coil length in the FRX-L device are critical in achieving higher FRC parameters for application in magnetized targetmore » fusion.« less

Authors:
; ; ; ; ; ; ;  [1];  [2];  [2]
  1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20722086
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 12; Journal Issue: 5; Other Information: DOI: 10.1063/1.1899648; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRON TEMPERATURE; ION TEMPERATURE; PLASMA CONFINEMENT; PLASMA DENSITY; PLASMA HEATING; PLASMA PRODUCTION; REVERSE-FIELD PINCH

Citation Formats

Zhang Shouyin, Intrator, T.P., Wurden, G.A., Waganaar, W.J., Taccetti, J.M., Renneke, R., Grabowski, C., Ruden, E.L., Science Applications International Corporation, Albuquerque, New Mexico 87106, and Air Force Research Laboratory, Albuquerque, New Mexico 87117. Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner. United States: N. p., 2005. Web. doi:10.1063/1.1899648.
Zhang Shouyin, Intrator, T.P., Wurden, G.A., Waganaar, W.J., Taccetti, J.M., Renneke, R., Grabowski, C., Ruden, E.L., Science Applications International Corporation, Albuquerque, New Mexico 87106, & Air Force Research Laboratory, Albuquerque, New Mexico 87117. Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner. United States. doi:10.1063/1.1899648.
Zhang Shouyin, Intrator, T.P., Wurden, G.A., Waganaar, W.J., Taccetti, J.M., Renneke, R., Grabowski, C., Ruden, E.L., Science Applications International Corporation, Albuquerque, New Mexico 87106, and Air Force Research Laboratory, Albuquerque, New Mexico 87117. Sun . "Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner". United States. doi:10.1063/1.1899648.
@article{osti_20722086,
title = {Confinement analyses of the high-density field-reversed configuration plasma in the field-reversed configuration experiment with a liner},
author = {Zhang Shouyin and Intrator, T.P. and Wurden, G.A. and Waganaar, W.J. and Taccetti, J.M. and Renneke, R. and Grabowski, C. and Ruden, E.L. and Science Applications International Corporation, Albuquerque, New Mexico 87106 and Air Force Research Laboratory, Albuquerque, New Mexico 87117},
abstractNote = {The focus of the field-reversed configuration (FRC) experiment with a liner (FRX-L) is the formation of a target FRC plasma for magnetized target fusion experiments. An FRC plasma with density of 10{sup 23} m{sup -3}, total temperature in the range of 150-300 eV, and a lifetime of {approx_equal}20 {mu}s is desired. Field-reversed {theta}-pinch technology is used with programed cusp fields at {theta}-coil ends to achieve non-tearing field line reconnections during FRC formation. Well-formed FRCs with density between (2-4)x10{sup 22} m{sup -3}, lifetime in the range of 15-20 {mu}s, and total temperature between 300-500 eV are reproducibly created. Key FRC parameters have standard deviation in the mean of 10% during consecutive shots. The FRCs are formed at 50 mTorr deuterium static fill using 2 kG net reversed bias field inside the {theta}-coil confinement region, with external main field unexpectedly ranging between 15-30 kG. The high-density FRCs confinement properties are approximately in agreement with empirical scaling laws obtained from previous experiments with fill pressure mostly less than 20 mTorr. Analyses in this paper reveal that reducing the external main field modulation and/or extending the {theta}-coil length in the FRX-L device are critical in achieving higher FRC parameters for application in magnetized target fusion.},
doi = {10.1063/1.1899648},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 12,
place = {United States},
year = {2005},
month = {5}
}