Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D

A. R. Briesemeister; R. C. Isler; S. L. Allen; J. W. Ahn; A. G. Mclean; E. A. Unterberg; D. L. Hillis; M. E. Fenstermacher; W. H. Meyer

doi:10.1016/j.jnucmat.2014.11.031

Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D

A. R. Briesemeister, R. C. Isler, S. L. Allen, J. W. Ahn, A. G. Mclean, E. A. Unterberg, D. L. Hillis, M. E. Fenstermacher, W. H. Meyer

Power Exhaust and Particle Control

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

1 Scopus citations

Abstract

Abstract Externally applied non-axisymmetric magnetic fields are shown to have little effect on the impurity ion flow velocity and temperature as measured by the multichord divertor spectrometer in the DIII-D divertor for both attached and detached conditions. These experiments were performed in H-mode plasmas with the grad-B drift toward the target plates, with and without n = 3 resonant magnetic perturbations (RMPs). The flow velocity in the divertor is shown to change by as much as 30% when deuterium gas puffing is used to create detachment of the divertor plasma. No measurable changes in the C III flow were observed in response to the RMP fields for the conditions used in this work. Images of the C III emission are used along with divertor Thomson scattering to show that the local electron and C III temperatures are equilibrated for the conditions shown.

Original language	English
Article number	48625
Pages (from-to)	524-527
Number of pages	4
Journal	Journal of Nuclear Materials
Volume	463
DOIs	https://doi.org/10.1016/j.jnucmat.2014.11.031
State	Published - Jul 22 2015

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences , using the DIII-D National Fusion Facility, a DOE Office of Science user facility, under Awards DE-FC02-04ER54698 , DE-AC02-00OR22725 , and DE-AC52-07NA27344 . DIII-D data shown in this paper can be obtained in digital format by following the links at https://fusion.gat.com/global/D3D_DMP .

Funders	Funder number
DOE Office of Science user facility	DE-AC02-00OR22725, DE-FC02-04ER54698, DE-AC52-07NA27344
U.S. Department of Energy
Office of Science
Fusion Energy Sciences

UN SDGs

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

Access to Document

10.1016/j.jnucmat.2014.11.031

Cite this

Briesemeister, A. R., Isler, R. C., Allen, S. L., Ahn, J. W., Mclean, A. G., Unterberg, E. A., Hillis, D. L., Fenstermacher, M. E., & Meyer, W. H. (2015). Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D. Journal of Nuclear Materials, 463, 524-527. Article 48625. https://doi.org/10.1016/j.jnucmat.2014.11.031

@article{e0c7791b5e5943029ba1cf53a18340b8,

title = "Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D",

abstract = "Abstract Externally applied non-axisymmetric magnetic fields are shown to have little effect on the impurity ion flow velocity and temperature as measured by the multichord divertor spectrometer in the DIII-D divertor for both attached and detached conditions. These experiments were performed in H-mode plasmas with the grad-B drift toward the target plates, with and without n = 3 resonant magnetic perturbations (RMPs). The flow velocity in the divertor is shown to change by as much as 30% when deuterium gas puffing is used to create detachment of the divertor plasma. No measurable changes in the C III flow were observed in response to the RMP fields for the conditions used in this work. Images of the C III emission are used along with divertor Thomson scattering to show that the local electron and C III temperatures are equilibrated for the conditions shown.",

author = "Briesemeister, {A. R.} and Isler, {R. C.} and Allen, {S. L.} and Ahn, {J. W.} and Mclean, {A. G.} and Unterberg, {E. A.} and Hillis, {D. L.} and Fenstermacher, {M. E.} and Meyer, {W. H.}",

note = "Publisher Copyright: {\textcopyright} 2014 Published by Elsevier B.V",

year = "2015",

month = jul,

day = "22",

doi = "10.1016/j.jnucmat.2014.11.031",

language = "English",

volume = "463",

pages = "524--527",

journal = "Journal of Nuclear Materials",

issn = "0022-3115",

publisher = "Elsevier",

}

TY - JOUR

T1 - Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D

AU - Briesemeister, A. R.

AU - Isler, R. C.

AU - Allen, S. L.

AU - Ahn, J. W.

AU - Mclean, A. G.

AU - Unterberg, E. A.

AU - Hillis, D. L.

AU - Fenstermacher, M. E.

AU - Meyer, W. H.

PY - 2015/7/22

Y1 - 2015/7/22

N2 - Abstract Externally applied non-axisymmetric magnetic fields are shown to have little effect on the impurity ion flow velocity and temperature as measured by the multichord divertor spectrometer in the DIII-D divertor for both attached and detached conditions. These experiments were performed in H-mode plasmas with the grad-B drift toward the target plates, with and without n = 3 resonant magnetic perturbations (RMPs). The flow velocity in the divertor is shown to change by as much as 30% when deuterium gas puffing is used to create detachment of the divertor plasma. No measurable changes in the C III flow were observed in response to the RMP fields for the conditions used in this work. Images of the C III emission are used along with divertor Thomson scattering to show that the local electron and C III temperatures are equilibrated for the conditions shown.

AB - Abstract Externally applied non-axisymmetric magnetic fields are shown to have little effect on the impurity ion flow velocity and temperature as measured by the multichord divertor spectrometer in the DIII-D divertor for both attached and detached conditions. These experiments were performed in H-mode plasmas with the grad-B drift toward the target plates, with and without n = 3 resonant magnetic perturbations (RMPs). The flow velocity in the divertor is shown to change by as much as 30% when deuterium gas puffing is used to create detachment of the divertor plasma. No measurable changes in the C III flow were observed in response to the RMP fields for the conditions used in this work. Images of the C III emission are used along with divertor Thomson scattering to show that the local electron and C III temperatures are equilibrated for the conditions shown.

UR - http://www.scopus.com/inward/record.url?scp=84937730266&partnerID=8YFLogxK

U2 - 10.1016/j.jnucmat.2014.11.031

DO - 10.1016/j.jnucmat.2014.11.031

M3 - Article

AN - SCOPUS:84937730266

SN - 0022-3115

VL - 463

SP - 524

EP - 527

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

M1 - 48625

ER -

Impurity ion flow and temperature measured in a detached divertor with externally applied non-axisymmetric fields on DIII-D

Abstract

Funding

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this