Role of stellarators in understanding toroidal transport physics

D. A. Rasmussen; F. S.B. Anderson; G. L. Bell; J. D. Bell; R. D. Bengtson; T. S. Bigelow; B. A. Carreras; K. R. Carter; R. J. Colchin; E. C. Crume; N. Dominguez; J. L. Dunlap; A. C. England; R. H. Fowler; R. F. Gandy; J. C. Glowienka; S. Hiroe; J. H. Harris; D. L. Hillis; L. D. Horton; H. C. Howe; R. C. Isler; T. C. Jernigan; H. Kaneko; R. R. Kindsfather; J. N. Leboeuf; V. E. Lynch; J. F. Lyon; C. H. Ma; M. M. Menon; P. K. Mioduszewski; R. N. Morris; M. Murakami; G. H. Neilson; V. K. Pare; T. L. Rhodes; R. K. Richards; C. P. Ritz; J. A. Rome; C. E. Thomas; T. Uckan; M. C. Wade; J. B. Wilgen; W. R. Wing

Role of stellarators in understanding toroidal transport physics

D. A. Rasmussen, F. S.B. Anderson, G. L. Bell, J. D. Bell, R. D. Bengtson, T. S. Bigelow, B. A. Carreras, K. R. Carter, R. J. Colchin, E. C. Crume, N. Dominguez, J. L. Dunlap, A. C. England, R. H. Fowler, R. F. Gandy, J. C. Glowienka, S. Hiroe, J. H. Harris, D. L. Hillis, L. D. HortonH. C. Howe, R. C. Isler, T. C. Jernigan, H. Kaneko, R. R. Kindsfather, J. N. Leboeuf, V. E. Lynch, J. F. Lyon, C. H. Ma, M. M. Menon, P. K. Mioduszewski, R. N. Morris, M. Murakami, G. H. Neilson, V. K. Pare, T. L. Rhodes, R. K. Richards, C. P. Ritz, J. A. Rome, C. E. Thomas, T. Uckan, M. C. Wade, J. B. Wilgen, W. R. Wing

Research output: Contribution to conference › Paper › peer-review

Abstract

In stellarators, external coil currents rather than internal currents are used to produce the confinement fields. This allows for greater flexibility in the design and operation of a stellarator. This flexibility can be exploited in a series of experiments on one device, such as the ATF. MHD stability boundaries will be tested by varying the vertical field. Access to the second stability regime has been observed in initial experiments on ATF. In this regime, the relationship between stabilization of pressure-driven modes and transport improvement can be studied. The density profile peaking factor can be varied using pellet injection in order to understand the role of η_i modes. As an example, the ATF-TEXT collaboration on edge fluctuations will compare the levels of resistive-gradient-driven fluctuations observed in the two devices. In addition, global confinement and local transport comparisons have been made to tokamaks and to other stellarators of roughly similar size and capabilities but with widely varying configuration properties.

Original language	English
Pages	59-60
Number of pages	2
State	Published - 1989
Event	IEEE International Conference on Plasma Science 1989 - Buffalo, NY, USA Duration: May 22 1989 → May 24 1989

Conference

Conference	IEEE International Conference on Plasma Science 1989
City	Buffalo, NY, USA
Period	05/22/89 → 05/24/89

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

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Rasmussen, D. A., Anderson, F. S. B., Bell, G. L., Bell, J. D., Bengtson, R. D., Bigelow, T. S., Carreras, B. A., Carter, K. R., Colchin, R. J., Crume, E. C., Dominguez, N., Dunlap, J. L., England, A. C., Fowler, R. H., Gandy, R. F., Glowienka, J. C., Hiroe, S., Harris, J. H., Hillis, D. L., ... Wing, W. R. (1989). Role of stellarators in understanding toroidal transport physics. 59-60. Paper presented at IEEE International Conference on Plasma Science 1989, Buffalo, NY, USA.

@conference{95576b013fc44f6bb9345d673c4aa7be,

title = "Role of stellarators in understanding toroidal transport physics",

abstract = "In stellarators, external coil currents rather than internal currents are used to produce the confinement fields. This allows for greater flexibility in the design and operation of a stellarator. This flexibility can be exploited in a series of experiments on one device, such as the ATF. MHD stability boundaries will be tested by varying the vertical field. Access to the second stability regime has been observed in initial experiments on ATF. In this regime, the relationship between stabilization of pressure-driven modes and transport improvement can be studied. The density profile peaking factor can be varied using pellet injection in order to understand the role of ηi modes. As an example, the ATF-TEXT collaboration on edge fluctuations will compare the levels of resistive-gradient-driven fluctuations observed in the two devices. In addition, global confinement and local transport comparisons have been made to tokamaks and to other stellarators of roughly similar size and capabilities but with widely varying configuration properties.",

author = "Rasmussen, {D. A.} and Anderson, {F. S.B.} and Bell, {G. L.} and Bell, {J. D.} and Bengtson, {R. D.} and Bigelow, {T. S.} and Carreras, {B. A.} and Carter, {K. R.} and Colchin, {R. J.} and Crume, {E. C.} and N. Dominguez and Dunlap, {J. L.} and England, {A. C.} and Fowler, {R. H.} and Gandy, {R. F.} and Glowienka, {J. C.} and S. Hiroe and Harris, {J. H.} and Hillis, {D. L.} and Horton, {L. D.} and Howe, {H. C.} and Isler, {R. C.} and Jernigan, {T. C.} and H. Kaneko and Kindsfather, {R. R.} and Leboeuf, {J. N.} and Lynch, {V. E.} and Lyon, {J. F.} and Ma, {C. H.} and Menon, {M. M.} and Mioduszewski, {P. K.} and Morris, {R. N.} and M. Murakami and Neilson, {G. H.} and Pare, {V. K.} and Rhodes, {T. L.} and Richards, {R. K.} and Ritz, {C. P.} and Rome, {J. A.} and Thomas, {C. E.} and T. Uckan and Wade, {M. C.} and Wilgen, {J. B.} and Wing, {W. R.}",

year = "1989",

language = "English",

pages = "59--60",

note = "IEEE International Conference on Plasma Science 1989 ; Conference date: 22-05-1989 Through 24-05-1989",

}

Rasmussen, DA, Anderson, FSB, Bell, GL, Bell, JD, Bengtson, RD, Bigelow, TS, Carreras, BA, Carter, KR, Colchin, RJ, Crume, EC, Dominguez, N, Dunlap, JL, England, AC, Fowler, RH, Gandy, RF, Glowienka, JC, Hiroe, S, Harris, JH, Hillis, DL, Horton, LD, Howe, HC, Isler, RC, Jernigan, TC, Kaneko, H, Kindsfather, RR, Leboeuf, JN, Lynch, VE, Lyon, JF, Ma, CH, Menon, MM, Mioduszewski, PK, Morris, RN, Murakami, M, Neilson, GH, Pare, VK, Rhodes, TL, Richards, RK, Ritz, CP, Rome, JA, Thomas, CE, Uckan, T, Wade, MC, Wilgen, JB & Wing, WR 1989, 'Role of stellarators in understanding toroidal transport physics', Paper presented at IEEE International Conference on Plasma Science 1989, Buffalo, NY, USA, 05/22/89 - 05/24/89 pp. 59-60.

TY - CONF

T1 - Role of stellarators in understanding toroidal transport physics

AU - Rasmussen, D. A.

AU - Anderson, F. S.B.

AU - Bell, G. L.

AU - Bell, J. D.

AU - Bengtson, R. D.

AU - Bigelow, T. S.

AU - Carreras, B. A.

AU - Carter, K. R.

AU - Colchin, R. J.

AU - Crume, E. C.

AU - Dominguez, N.

AU - Dunlap, J. L.

AU - England, A. C.

AU - Fowler, R. H.

AU - Gandy, R. F.

AU - Glowienka, J. C.

AU - Hiroe, S.

AU - Harris, J. H.

AU - Hillis, D. L.

AU - Horton, L. D.

AU - Howe, H. C.

AU - Isler, R. C.

AU - Jernigan, T. C.

AU - Kaneko, H.

AU - Kindsfather, R. R.

AU - Leboeuf, J. N.

AU - Lynch, V. E.

AU - Lyon, J. F.

AU - Ma, C. H.

AU - Menon, M. M.

AU - Mioduszewski, P. K.

AU - Morris, R. N.

AU - Murakami, M.

AU - Neilson, G. H.

AU - Pare, V. K.

AU - Rhodes, T. L.

AU - Richards, R. K.

AU - Ritz, C. P.

AU - Rome, J. A.

AU - Thomas, C. E.

AU - Uckan, T.

AU - Wade, M. C.

AU - Wilgen, J. B.

AU - Wing, W. R.

PY - 1989

Y1 - 1989

N2 - In stellarators, external coil currents rather than internal currents are used to produce the confinement fields. This allows for greater flexibility in the design and operation of a stellarator. This flexibility can be exploited in a series of experiments on one device, such as the ATF. MHD stability boundaries will be tested by varying the vertical field. Access to the second stability regime has been observed in initial experiments on ATF. In this regime, the relationship between stabilization of pressure-driven modes and transport improvement can be studied. The density profile peaking factor can be varied using pellet injection in order to understand the role of ηi modes. As an example, the ATF-TEXT collaboration on edge fluctuations will compare the levels of resistive-gradient-driven fluctuations observed in the two devices. In addition, global confinement and local transport comparisons have been made to tokamaks and to other stellarators of roughly similar size and capabilities but with widely varying configuration properties.

AB - In stellarators, external coil currents rather than internal currents are used to produce the confinement fields. This allows for greater flexibility in the design and operation of a stellarator. This flexibility can be exploited in a series of experiments on one device, such as the ATF. MHD stability boundaries will be tested by varying the vertical field. Access to the second stability regime has been observed in initial experiments on ATF. In this regime, the relationship between stabilization of pressure-driven modes and transport improvement can be studied. The density profile peaking factor can be varied using pellet injection in order to understand the role of ηi modes. As an example, the ATF-TEXT collaboration on edge fluctuations will compare the levels of resistive-gradient-driven fluctuations observed in the two devices. In addition, global confinement and local transport comparisons have been made to tokamaks and to other stellarators of roughly similar size and capabilities but with widely varying configuration properties.

UR - http://www.scopus.com/inward/record.url?scp=0024890485&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0024890485

SP - 59

EP - 60

T2 - IEEE International Conference on Plasma Science 1989

Y2 - 22 May 1989 through 24 May 1989

ER -

Role of stellarators in understanding toroidal transport physics

Abstract

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