Application of divertor cryopumping to H-mode density control in DIII-D

M. A. Mahdavi; J. R. Ferron; A. W. Hyatt; R. J. La Haye; G. L. Laughon; M. Leh; K. M. Schaubel; M. J. Schaffer; D. P. Schissel; J. T. Scoville; J. P. Smith; R. D. Stambaugh; R. Maingi; M. M. Menon; P. K. Mioduszewski; M. Wade

Application of divertor cryopumping to H-mode density control in DIII-D

M. A. Mahdavi, J. R. Ferron, A. W. Hyatt, R. J. La Haye, G. L. Laughon, M. Leh, K. M. Schaubel, M. J. Schaffer, D. P. Schissel, J. T. Scoville, J. P. Smith, R. D. Stambaugh, R. Maingi, M. M. Menon, P. K. Mioduszewski, M. Wade

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

In this paper we describe the method and the results of experiments where a unique in-vessel cryopump-baffle system was used to control density of H-mode plasmas. We were able to independently regulate current and density of ELMing H-mode plasmas, each over a range of factor two, and measure the H-mode confinement scaling with plasma density and current. With a modest pumping speed of ≈40 kℓ/s, particle exhaust rates as high as 2 × 10²² atom/s^-1 have been observed.

Original language	English
Title of host publication	Proceedings - Symposium on Fusion Engineering
Publisher	Publ by IEEE
Pages	597-603
Number of pages	7
ISBN (Print)	0780314131
State	Published - 1993
Externally published	Yes
Event	Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2) - Hyannis, MA, USA Duration: Oct 12 1993 → Oct 12 1993

Publication series

Name	Proceedings - Symposium on Fusion Engineering
Volume	2

Conference

Conference	Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2)
City	Hyannis, MA, USA
Period	10/12/93 → 10/12/93

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Mahdavi, M. A., Ferron, J. R., Hyatt, A. W., La Haye, R. J., Laughon, G. L., Leh, M., Schaubel, K. M., Schaffer, M. J., Schissel, D. P., Scoville, J. T., Smith, J. P., Stambaugh, R. D., Maingi, R., Menon, M. M., Mioduszewski, P. K., & Wade, M. (1993). Application of divertor cryopumping to H-mode density control in DIII-D. In Proceedings - Symposium on Fusion Engineering (pp. 597-603). (Proceedings - Symposium on Fusion Engineering; Vol. 2). Publ by IEEE.

@inproceedings{5be98bdc6e2a4fd884d13fc324635b59,

title = "Application of divertor cryopumping to H-mode density control in DIII-D",

abstract = "In this paper we describe the method and the results of experiments where a unique in-vessel cryopump-baffle system was used to control density of H-mode plasmas. We were able to independently regulate current and density of ELMing H-mode plasmas, each over a range of factor two, and measure the H-mode confinement scaling with plasma density and current. With a modest pumping speed of ≈40 kℓ/s, particle exhaust rates as high as 2 × 1022 atom/s-1 have been observed.",

author = "Mahdavi, {M. A.} and Ferron, {J. R.} and Hyatt, {A. W.} and {La Haye}, {R. J.} and Laughon, {G. L.} and M. Leh and Schaubel, {K. M.} and Schaffer, {M. J.} and Schissel, {D. P.} and Scoville, {J. T.} and Smith, {J. P.} and Stambaugh, {R. D.} and R. Maingi and Menon, {M. M.} and Mioduszewski, {P. K.} and M. Wade",

year = "1993",

language = "English",

isbn = "0780314131",

series = "Proceedings - Symposium on Fusion Engineering",

publisher = "Publ by IEEE",

pages = "597--603",

booktitle = "Proceedings - Symposium on Fusion Engineering",

note = "Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2) ; Conference date: 12-10-1993 Through 12-10-1993",

}

Mahdavi, MA, Ferron, JR, Hyatt, AW, La Haye, RJ, Laughon, GL, Leh, M, Schaubel, KM, Schaffer, MJ, Schissel, DP, Scoville, JT, Smith, JP, Stambaugh, RD, Maingi, R, Menon, MM, Mioduszewski, PK & Wade, M 1993, Application of divertor cryopumping to H-mode density control in DIII-D. in Proceedings - Symposium on Fusion Engineering. Proceedings - Symposium on Fusion Engineering, vol. 2, Publ by IEEE, pp. 597-603, Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2), Hyannis, MA, USA, 10/12/93.

TY - GEN

T1 - Application of divertor cryopumping to H-mode density control in DIII-D

AU - Mahdavi, M. A.

AU - Ferron, J. R.

AU - Hyatt, A. W.

AU - La Haye, R. J.

AU - Laughon, G. L.

AU - Leh, M.

AU - Schaubel, K. M.

AU - Schaffer, M. J.

AU - Schissel, D. P.

AU - Scoville, J. T.

AU - Smith, J. P.

AU - Stambaugh, R. D.

AU - Maingi, R.

AU - Menon, M. M.

AU - Mioduszewski, P. K.

AU - Wade, M.

PY - 1993

Y1 - 1993

N2 - In this paper we describe the method and the results of experiments where a unique in-vessel cryopump-baffle system was used to control density of H-mode plasmas. We were able to independently regulate current and density of ELMing H-mode plasmas, each over a range of factor two, and measure the H-mode confinement scaling with plasma density and current. With a modest pumping speed of ≈40 kℓ/s, particle exhaust rates as high as 2 × 1022 atom/s-1 have been observed.

AB - In this paper we describe the method and the results of experiments where a unique in-vessel cryopump-baffle system was used to control density of H-mode plasmas. We were able to independently regulate current and density of ELMing H-mode plasmas, each over a range of factor two, and measure the H-mode confinement scaling with plasma density and current. With a modest pumping speed of ≈40 kℓ/s, particle exhaust rates as high as 2 × 1022 atom/s-1 have been observed.

UR - http://www.scopus.com/inward/record.url?scp=0027709935&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0027709935

SN - 0780314131

T3 - Proceedings - Symposium on Fusion Engineering

SP - 597

EP - 603

BT - Proceedings - Symposium on Fusion Engineering

PB - Publ by IEEE

T2 - Proceedings of the 15th IEEE/NPSS Symposium on Fusion Engineering. Part 2 (of 2)

Y2 - 12 October 1993 through 12 October 1993

ER -

Application of divertor cryopumping to H-mode density control in DIII-D

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