Scaling of electron and ion transport in the high-power spherical torus NSTX

S. M. Kaye; R. E. Bell; D. Gates; B. P. Leblanc; F. M. Levinton; J. E. Menard; D. Mueller; G. Rewoldt; S. A. Sabbagh; W. Wang; H. Yuh

doi:10.1103/PhysRevLett.98.175002

Scaling of electron and ion transport in the high-power spherical torus NSTX

S. M. Kaye, R. E. Bell, D. Gates, B. P. Leblanc, F. M. Levinton, J. E. Menard, D. Mueller, G. Rewoldt, S. A. Sabbagh, W. Wang, H. Yuh

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

78 Scopus citations

Abstract

Dedicated H-mode parameter scans in the high-power National Spherical Torus Experiment have been used to establish the confinement scaling and underlying transport trends at low aspect ratio (R/a 1.3). These scans indicate a strong dependence of the global and thermal energy confinement times on the toroidal field, BT0.9, while their dependence on plasma current is weaker, Ip0.4. Local transport analysis indicates that the electrons control the BT scaling, whereas the ions control the Ip scaling, with χi outside r/a=0.5 at the neoclassical level.

Original language	English (US)
Article number	175002
Journal	Physical review letters
Volume	98
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.98.175002
State	Published - Apr 26 2007

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.98.175002

Cite this

@article{c877227d397a4ff69bb170c684a0e021,

title = "Scaling of electron and ion transport in the high-power spherical torus NSTX",

abstract = "Dedicated H-mode parameter scans in the high-power National Spherical Torus Experiment have been used to establish the confinement scaling and underlying transport trends at low aspect ratio (R/a 1.3). These scans indicate a strong dependence of the global and thermal energy confinement times on the toroidal field, BT0.9, while their dependence on plasma current is weaker, Ip0.4. Local transport analysis indicates that the electrons control the BT scaling, whereas the ions control the Ip scaling, with χi outside r/a=0.5 at the neoclassical level.",

author = "Kaye, \{S. M.\} and Bell, \{R. E.\} and D. Gates and Leblanc, \{B. P.\} and Levinton, \{F. M.\} and Menard, \{J. E.\} and D. Mueller and G. Rewoldt and Sabbagh, \{S. A.\} and W. Wang and H. Yuh",

year = "2007",

month = apr,

day = "26",

doi = "10.1103/PhysRevLett.98.175002",

language = "English (US)",

volume = "98",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "17",

}

TY - JOUR

T1 - Scaling of electron and ion transport in the high-power spherical torus NSTX

AU - Kaye, S. M.

AU - Bell, R. E.

AU - Gates, D.

AU - Leblanc, B. P.

AU - Levinton, F. M.

AU - Menard, J. E.

AU - Mueller, D.

AU - Rewoldt, G.

AU - Sabbagh, S. A.

AU - Wang, W.

AU - Yuh, H.

PY - 2007/4/26

Y1 - 2007/4/26

N2 - Dedicated H-mode parameter scans in the high-power National Spherical Torus Experiment have been used to establish the confinement scaling and underlying transport trends at low aspect ratio (R/a 1.3). These scans indicate a strong dependence of the global and thermal energy confinement times on the toroidal field, BT0.9, while their dependence on plasma current is weaker, Ip0.4. Local transport analysis indicates that the electrons control the BT scaling, whereas the ions control the Ip scaling, with χi outside r/a=0.5 at the neoclassical level.

AB - Dedicated H-mode parameter scans in the high-power National Spherical Torus Experiment have been used to establish the confinement scaling and underlying transport trends at low aspect ratio (R/a 1.3). These scans indicate a strong dependence of the global and thermal energy confinement times on the toroidal field, BT0.9, while their dependence on plasma current is weaker, Ip0.4. Local transport analysis indicates that the electrons control the BT scaling, whereas the ions control the Ip scaling, with χi outside r/a=0.5 at the neoclassical level.

UR - https://www.scopus.com/pages/publications/34247591510

UR - https://www.scopus.com/inward/citedby.url?scp=34247591510&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.98.175002

DO - 10.1103/PhysRevLett.98.175002

M3 - Article

AN - SCOPUS:34247591510

SN - 0031-9007

VL - 98

JO - Physical review letters

JF - Physical review letters

IS - 17

M1 - 175002

ER -

Scaling of electron and ion transport in the high-power spherical torus NSTX

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this