Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D

T. W. Petrie; N. H. Brooks; M. E. Fenstermacher; M. Groth; A. W. Hyatt; C. J. Lasnier; A. W. Leonard; G. D. Porter; M. J. Schaffer; M. R. Wade; J. G. Watkins; W. P. West

doi:10.1016/j.jnucmat.2009.01.071

Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D

T. W. Petrie, N. H. Brooks, M. E. Fenstermacher, M. Groth, A. W. Hyatt, C. J. Lasnier, A. W. Leonard, G. D. Porter, M. J. Schaffer, M. R. Wade, J. G. Watkins, W. P. West

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Recent DIII-D experiments show that both magnetic balance and particle drifts are important to understanding how argon impurities accumulate in balanced and unbalanced double-null plasmas during 'puff and pump' radiating divertor operation. Unbalanced double-null shapes, which are biased in the direction opposite to the ion B × ∇ B drift direction, have produced the best result to-date in terms of coupling a radiating divertor approach with an H-mode plasma. The proximity to balanced double-null that can be used for puff-and-pump may depend on the width of the heat flux profile in the scrape-off layer. A comparison of plasma behavior in the open lower divertor to that of the more closed upper divertor determined that plasma density control was far more sensitive to the ion B × ∇ B drift direction than to the relative closure of the divertor.

Original language	English
Pages (from-to)	242-245
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	390-391
Issue number	1
DOIs	https://doi.org/10.1016/j.jnucmat.2009.01.071
State	Published - Jun 15 2009
Externally published	Yes

Funding

This work was supported by the US Department of Energy under DE-FC02-04ER54698, DE-AC52-07NA27344, and DE-AC04-94AL85000.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jnucmat.2009.01.071

Cite this

Petrie, T. W., Brooks, N. H., Fenstermacher, M. E., Groth, M., Hyatt, A. W., Lasnier, C. J., Leonard, A. W., Porter, G. D., Schaffer, M. J., Wade, M. R., Watkins, J. G., & West, W. P. (2009). Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D. Journal of Nuclear Materials, 390-391(1), 242-245. https://doi.org/10.1016/j.jnucmat.2009.01.071

@article{d518e7ab77154fe4a67a2af474aebb72,

title = "Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D",

abstract = "Recent DIII-D experiments show that both magnetic balance and particle drifts are important to understanding how argon impurities accumulate in balanced and unbalanced double-null plasmas during 'puff and pump' radiating divertor operation. Unbalanced double-null shapes, which are biased in the direction opposite to the ion B × ∇ B drift direction, have produced the best result to-date in terms of coupling a radiating divertor approach with an H-mode plasma. The proximity to balanced double-null that can be used for puff-and-pump may depend on the width of the heat flux profile in the scrape-off layer. A comparison of plasma behavior in the open lower divertor to that of the more closed upper divertor determined that plasma density control was far more sensitive to the ion B × ∇ B drift direction than to the relative closure of the divertor.",

author = "Petrie, {T. W.} and Brooks, {N. H.} and Fenstermacher, {M. E.} and M. Groth and Hyatt, {A. W.} and Lasnier, {C. J.} and Leonard, {A. W.} and Porter, {G. D.} and Schaffer, {M. J.} and Wade, {M. R.} and Watkins, {J. G.} and West, {W. P.}",

year = "2009",

month = jun,

day = "15",

doi = "10.1016/j.jnucmat.2009.01.071",

language = "English",

volume = "390-391",

pages = "242--245",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

number = "1",

}

Petrie, TW, Brooks, NH, Fenstermacher, ME, Groth, M, Hyatt, AW, Lasnier, CJ, Leonard, AW, Porter, GD, Schaffer, MJ, Wade, MR, Watkins, JG & West, WP 2009, 'Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D', Journal of Nuclear Materials, vol. 390-391, no. 1, pp. 242-245. https://doi.org/10.1016/j.jnucmat.2009.01.071

TY - JOUR

T1 - Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D

AU - Petrie, T. W.

AU - Brooks, N. H.

AU - Fenstermacher, M. E.

AU - Groth, M.

AU - Hyatt, A. W.

AU - Lasnier, C. J.

AU - Leonard, A. W.

AU - Porter, G. D.

AU - Schaffer, M. J.

AU - Wade, M. R.

AU - Watkins, J. G.

AU - West, W. P.

PY - 2009/6/15

Y1 - 2009/6/15

N2 - Recent DIII-D experiments show that both magnetic balance and particle drifts are important to understanding how argon impurities accumulate in balanced and unbalanced double-null plasmas during 'puff and pump' radiating divertor operation. Unbalanced double-null shapes, which are biased in the direction opposite to the ion B × ∇ B drift direction, have produced the best result to-date in terms of coupling a radiating divertor approach with an H-mode plasma. The proximity to balanced double-null that can be used for puff-and-pump may depend on the width of the heat flux profile in the scrape-off layer. A comparison of plasma behavior in the open lower divertor to that of the more closed upper divertor determined that plasma density control was far more sensitive to the ion B × ∇ B drift direction than to the relative closure of the divertor.

AB - Recent DIII-D experiments show that both magnetic balance and particle drifts are important to understanding how argon impurities accumulate in balanced and unbalanced double-null plasmas during 'puff and pump' radiating divertor operation. Unbalanced double-null shapes, which are biased in the direction opposite to the ion B × ∇ B drift direction, have produced the best result to-date in terms of coupling a radiating divertor approach with an H-mode plasma. The proximity to balanced double-null that can be used for puff-and-pump may depend on the width of the heat flux profile in the scrape-off layer. A comparison of plasma behavior in the open lower divertor to that of the more closed upper divertor determined that plasma density control was far more sensitive to the ion B × ∇ B drift direction than to the relative closure of the divertor.

UR - http://www.scopus.com/inward/record.url?scp=67349237946&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2009.01.071

DO - 10.1016/j.jnucmat.2009.01.071

M3 - Article

AN - SCOPUS:67349237946

SN - 0022-3115

VL - 390-391

SP - 242

EP - 245

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1

ER -

Sensitivity of injected argon behavior to changes in magnetic balance in double-null plasmas in DIII-D

Abstract

Funding

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this