Helium transport and exhaust studies in DIII-D

M. R. Wade; J. T. Hogan; D. L. Hillis; R. Maingi; M. M. Menon; K. H. Burrell; R. J. Groebner; M. A. Mahdavi; W. P. West; D. F. Finkenthal

doi:10.13182/fst94-a40222

Helium transport and exhaust studies in DIII-D

M. R. Wade, J. T. Hogan, D. L. Hillis, R. Maingi, M. M. Menon, K. H. Burrell, R. J. Groebner, M. A. Mahdavi, W. P. West, D. F. Finkenthal

Fusion and Fission Energy and Science Di

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Abstract

A better understanding of helium transport in the plasma core and edge in enhanced confinement regimes is now emerging from recent experimental studies on DIII-D. Overall, the results are encouraging with significant helium exhaust obtained in a diverted, ELMing H-mode plasma, with τ_He^*/τ_E approx. 10 and transport studies indicating that D_He/X_eff approx. 1 in all plasma conditions studied to date. However, measurements in the core and pumping plenum show a significant dilution of helium as it flows from the plasma core to the pumping plenum. Such dilution could be the limiting factor in the overall removal rate of helium in a reactor system.

Original language	English
Pages (from-to)	595-602
Number of pages	8
Journal	Fusion Technology
Volume	26
Issue number	3 pt 2
DOIs	https://doi.org/10.13182/fst94-a40222
State	Published - 1994
Event	Proceedings of the 11th Topical Meeting on the Technology of Fusion Energy - New Orleans, LA, USA Duration: Jun 19 1994 → Jun 23 1994

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title = "Helium transport and exhaust studies in DIII-D",

abstract = "A better understanding of helium transport in the plasma core and edge in enhanced confinement regimes is now emerging from recent experimental studies on DIII-D. Overall, the results are encouraging with significant helium exhaust obtained in a diverted, ELMing H-mode plasma, with τHe*/τE approx. 10 and transport studies indicating that DHe/Xeff approx. 1 in all plasma conditions studied to date. However, measurements in the core and pumping plenum show a significant dilution of helium as it flows from the plasma core to the pumping plenum. Such dilution could be the limiting factor in the overall removal rate of helium in a reactor system.",

author = "Wade, {M. R.} and Hogan, {J. T.} and Hillis, {D. L.} and R. Maingi and Menon, {M. M.} and Burrell, {K. H.} and Groebner, {R. J.} and Mahdavi, {M. A.} and West, {W. P.} and Finkenthal, {D. F.}",

year = "1994",

doi = "10.13182/fst94-a40222",

language = "English",

volume = "26",

pages = "595--602",

journal = "Fusion Technology",

issn = "0748-1896",

number = "3 pt 2",

note = "Proceedings of the 11th Topical Meeting on the Technology of Fusion Energy ; Conference date: 19-06-1994 Through 23-06-1994",

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TY - JOUR

T1 - Helium transport and exhaust studies in DIII-D

AU - Wade, M. R.

AU - Hogan, J. T.

AU - Hillis, D. L.

AU - Maingi, R.

AU - Menon, M. M.

AU - Burrell, K. H.

AU - Groebner, R. J.

AU - Mahdavi, M. A.

AU - West, W. P.

AU - Finkenthal, D. F.

PY - 1994

Y1 - 1994

N2 - A better understanding of helium transport in the plasma core and edge in enhanced confinement regimes is now emerging from recent experimental studies on DIII-D. Overall, the results are encouraging with significant helium exhaust obtained in a diverted, ELMing H-mode plasma, with τHe*/τE approx. 10 and transport studies indicating that DHe/Xeff approx. 1 in all plasma conditions studied to date. However, measurements in the core and pumping plenum show a significant dilution of helium as it flows from the plasma core to the pumping plenum. Such dilution could be the limiting factor in the overall removal rate of helium in a reactor system.

AB - A better understanding of helium transport in the plasma core and edge in enhanced confinement regimes is now emerging from recent experimental studies on DIII-D. Overall, the results are encouraging with significant helium exhaust obtained in a diverted, ELMing H-mode plasma, with τHe*/τE approx. 10 and transport studies indicating that DHe/Xeff approx. 1 in all plasma conditions studied to date. However, measurements in the core and pumping plenum show a significant dilution of helium as it flows from the plasma core to the pumping plenum. Such dilution could be the limiting factor in the overall removal rate of helium in a reactor system.

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U2 - 10.13182/fst94-a40222

DO - 10.13182/fst94-a40222

M3 - Conference article

AN - SCOPUS:0028545291

SN - 0748-1896

VL - 26

SP - 595

EP - 602

JO - Fusion Technology

JF - Fusion Technology

IS - 3 pt 2

T2 - Proceedings of the 11th Topical Meeting on the Technology of Fusion Energy

Y2 - 19 June 1994 through 23 June 1994

ER -

Helium transport and exhaust studies in DIII-D

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