Long pulse experiments on the Advanced Toroidal Facility

T. C. Jernigan; T. S. Bigelow; R. J. Colchin; G. R. Dyer; A. C. England; D. T. Fehling; D. E. Greenwood; C. C. Klepper; M. Murakami; D. R. Overbey; D. A. Rasmussen; C. R. Schaich; J. E. Simpkins; J. A. White; J. B. Wilgen; C. T. Wilson; J. L. Yarber; A. Komori; S. Morimoto; O. Motojima; A. Sagara; M. Sato; H. Yamada

doi:10.1063/1.871267

Long pulse experiments on the Advanced Toroidal Facility

T. C. Jernigan, T. S. Bigelow, R. J. Colchin, G. R. Dyer, A. C. England, D. T. Fehling, D. E. Greenwood, C. C. Klepper, M. Murakami, D. R. Overbey, D. A. Rasmussen, C. R. Schaich, J. E. Simpkins, J. A. White, J. B. Wilgen, C. T. Wilson, J. L. Yarber, A. Komori, S. Morimoto, O. MotojimaA. Sagara, M. Sato, H. Yamada

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Abstract

The Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] is the world's largest stellarator. It was designed and built to demonstrate high beta, steady-state operation in a toroidal confinement system. During its final operating period ATF achieved pulse lengths of over one hour (4667 s). The objectives of these experiments were (1) investigation of plasma performance at times that are long compared to the plasma/wall equilibrium time; (2) determination of plasma control and wall conditioning techniques; and (3) adaptation of plasma diagnostic and data acquisition systems to long-pulse operation. Other experiments have also extended earlier studies of dimensionless-parameter plasma confinement scaling. By employing two discrete electron cyclotron heating (ECH) frequencies (28 and 35 GHz), and by simultaneously modulating the ECH power, magnetic field, and plasma density, it has been possible to maintain fixed plasma beta and collisionality while modulating the normalized gyroradius.

Original language	English
Pages (from-to)	2435-2439
Number of pages	5
Journal	Physics of Plasmas
Volume	2
Issue number	6
DOIs	https://doi.org/10.1063/1.871267
State	Published - 1995

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Jernigan, T. C., Bigelow, T. S., Colchin, R. J., Dyer, G. R., England, A. C., Fehling, D. T., Greenwood, D. E., Klepper, C. C., Murakami, M., Overbey, D. R., Rasmussen, D. A., Schaich, C. R., Simpkins, J. E., White, J. A., Wilgen, J. B., Wilson, C. T., Yarber, J. L., Komori, A., Morimoto, S., ... Yamada, H. (1995). Long pulse experiments on the Advanced Toroidal Facility. Physics of Plasmas, 2(6), 2435-2439. https://doi.org/10.1063/1.871267

@article{f4dc927d54be494a8e01c10a54c7d8bf,

title = "Long pulse experiments on the Advanced Toroidal Facility",

abstract = "The Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] is the world's largest stellarator. It was designed and built to demonstrate high beta, steady-state operation in a toroidal confinement system. During its final operating period ATF achieved pulse lengths of over one hour (4667 s). The objectives of these experiments were (1) investigation of plasma performance at times that are long compared to the plasma/wall equilibrium time; (2) determination of plasma control and wall conditioning techniques; and (3) adaptation of plasma diagnostic and data acquisition systems to long-pulse operation. Other experiments have also extended earlier studies of dimensionless-parameter plasma confinement scaling. By employing two discrete electron cyclotron heating (ECH) frequencies (28 and 35 GHz), and by simultaneously modulating the ECH power, magnetic field, and plasma density, it has been possible to maintain fixed plasma beta and collisionality while modulating the normalized gyroradius.",

author = "Jernigan, \{T. C.\} and Bigelow, \{T. S.\} and Colchin, \{R. J.\} and Dyer, \{G. R.\} and England, \{A. C.\} and Fehling, \{D. T.\} and Greenwood, \{D. E.\} and Klepper, \{C. C.\} and M. Murakami and Overbey, \{D. R.\} and Rasmussen, \{D. A.\} and Schaich, \{C. R.\} and Simpkins, \{J. E.\} and White, \{J. A.\} and Wilgen, \{J. B.\} and Wilson, \{C. T.\} and Yarber, \{J. L.\} and A. Komori and S. Morimoto and O. Motojima and A. Sagara and M. Sato and H. Yamada",

year = "1995",

doi = "10.1063/1.871267",

language = "English",

volume = "2",

pages = "2435--2439",

journal = "Physics of Plasmas",

issn = "1070-664X",

publisher = "American Institute of Physics",

number = "6",

}

Jernigan, TC, Bigelow, TS, Colchin, RJ, Dyer, GR, England, AC, Fehling, DT, Greenwood, DE, Klepper, CC, Murakami, M, Overbey, DR, Rasmussen, DA, Schaich, CR, Simpkins, JE, White, JA, Wilgen, JB, Wilson, CT, Yarber, JL, Komori, A, Morimoto, S, Motojima, O, Sagara, A, Sato, M & Yamada, H 1995, 'Long pulse experiments on the Advanced Toroidal Facility', Physics of Plasmas, vol. 2, no. 6, pp. 2435-2439. https://doi.org/10.1063/1.871267

TY - JOUR

T1 - Long pulse experiments on the Advanced Toroidal Facility

AU - Jernigan, T. C.

AU - Bigelow, T. S.

AU - Colchin, R. J.

AU - Dyer, G. R.

AU - England, A. C.

AU - Fehling, D. T.

AU - Greenwood, D. E.

AU - Klepper, C. C.

AU - Murakami, M.

AU - Overbey, D. R.

AU - Rasmussen, D. A.

AU - Schaich, C. R.

AU - Simpkins, J. E.

AU - White, J. A.

AU - Wilgen, J. B.

AU - Wilson, C. T.

AU - Yarber, J. L.

AU - Komori, A.

AU - Morimoto, S.

AU - Motojima, O.

AU - Sagara, A.

AU - Sato, M.

AU - Yamada, H.

PY - 1995

Y1 - 1995

N2 - The Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] is the world's largest stellarator. It was designed and built to demonstrate high beta, steady-state operation in a toroidal confinement system. During its final operating period ATF achieved pulse lengths of over one hour (4667 s). The objectives of these experiments were (1) investigation of plasma performance at times that are long compared to the plasma/wall equilibrium time; (2) determination of plasma control and wall conditioning techniques; and (3) adaptation of plasma diagnostic and data acquisition systems to long-pulse operation. Other experiments have also extended earlier studies of dimensionless-parameter plasma confinement scaling. By employing two discrete electron cyclotron heating (ECH) frequencies (28 and 35 GHz), and by simultaneously modulating the ECH power, magnetic field, and plasma density, it has been possible to maintain fixed plasma beta and collisionality while modulating the normalized gyroradius.

AB - The Advanced Toroidal Facility (ATF) [Fusion Technol. 10, 179 (1986)] is the world's largest stellarator. It was designed and built to demonstrate high beta, steady-state operation in a toroidal confinement system. During its final operating period ATF achieved pulse lengths of over one hour (4667 s). The objectives of these experiments were (1) investigation of plasma performance at times that are long compared to the plasma/wall equilibrium time; (2) determination of plasma control and wall conditioning techniques; and (3) adaptation of plasma diagnostic and data acquisition systems to long-pulse operation. Other experiments have also extended earlier studies of dimensionless-parameter plasma confinement scaling. By employing two discrete electron cyclotron heating (ECH) frequencies (28 and 35 GHz), and by simultaneously modulating the ECH power, magnetic field, and plasma density, it has been possible to maintain fixed plasma beta and collisionality while modulating the normalized gyroradius.

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U2 - 10.1063/1.871267

DO - 10.1063/1.871267

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AN - SCOPUS:0005958433

SN - 1070-664X

VL - 2

SP - 2435

EP - 2439

JO - Physics of Plasmas

JF - Physics of Plasmas

IS - 6

ER -

Long pulse experiments on the Advanced Toroidal Facility

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