Neutral-beam injection heating experiment on currentless plasma in the heliotron E device

K. Uo; A. Iiyoshi; T. Obiki; O. Motojima; S. Morimoto; M. Wakatani; A. Sasaki; K. Kondo; M. Sato; K. Hanatani; T. Mutoh; H. Zushi; K. Kaneko; S. Besshou; M. Nakasuga; F. Sano; T. Mizuuchi; S. Sudo; J. H. Harris; J. E. Rice; J. L. Terry; I. Ohtake; M. Iima; H. Okada; K. Magome

doi:10.1088/0029-5515/24/12/003

Neutral-beam injection heating experiment on currentless plasma in the heliotron E device

K. Uo, A. Iiyoshi, T. Obiki, O. Motojima, S. Morimoto, M. Wakatani, A. Sasaki, K. Kondo, M. Sato, K. Hanatani, T. Mutoh, H. Zushi, K. Kaneko, S. Besshou, M. Nakasuga, F. Sano, T. Mizuuchi, S. Sudo, J. H. Harris, J. E. RiceJ. L. Terry, I. Ohtake, M. Iima, H. Okada, K. Magome

Power Exhaust and Particle Control

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Abstract

Recent results of the neutral-beam heating experiments (NBI) on the Heliotron E plasma are reported. The target plasma for NBI is produced by electron cyclotron resonance heating (ECRH), using two gyrotrons (53.2 GHz, 200 kW × 2). The neutral beams of 2.9 MW_max are injected 20 to 40 ms afterwards in order to produce a high-energy currentless plasma. At a magnetic field of 1.9 T, a maximum ion temperature of 1.0 keV is obtained at a density of 1.9 × 10¹³ cm⁻³. The maximum_eτ_E is 2.4 × 10¹² cm ⁻³⋅s. By reducing the magnetic field to 0.94 T and using the second-harmonic resonance of microwaves to produce a target plasma, a high-beta plasma is produced by NBI. The maximum central-beta and volume-average beta values are 3.6% and 2%, respectively. The paper describes the results of NBI heating experiments and the confinement and MHD activity properties of the plasmas in question.ximately inverse dependence on the local value of the poloidal magnetic field.

Original language	English
Pages (from-to)	1551-1560
Number of pages	10
Journal	Nuclear Fusion
Volume	24
Issue number	12
DOIs	https://doi.org/10.1088/0029-5515/24/12/003
State	Published - Dec 1984

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Uo, K., Iiyoshi, A., Obiki, T., Motojima, O., Morimoto, S., Wakatani, M., Sasaki, A., Kondo, K., Sato, M., Hanatani, K., Mutoh, T., Zushi, H., Kaneko, K., Besshou, S., Nakasuga, M., Sano, F., Mizuuchi, T., Sudo, S., Harris, J. H., ... Magome, K. (1984). Neutral-beam injection heating experiment on currentless plasma in the heliotron E device. Nuclear Fusion, 24(12), 1551-1560. https://doi.org/10.1088/0029-5515/24/12/003

@article{85bf080d6c54445784ae8ab8aef565a5,

title = "Neutral-beam injection heating experiment on currentless plasma in the heliotron E device",

abstract = "Recent results of the neutral-beam heating experiments (NBI) on the Heliotron E plasma are reported. The target plasma for NBI is produced by electron cyclotron resonance heating (ECRH), using two gyrotrons (53.2 GHz, 200 kW × 2). The neutral beams of 2.9 MWmax are injected 20 to 40 ms afterwards in order to produce a high-energy currentless plasma. At a magnetic field of 1.9 T, a maximum ion temperature of 1.0 keV is obtained at a density of 1.9 × 1013 cm−3. The maximumeτE is 2.4 × 1012 cm −3⋅s. By reducing the magnetic field to 0.94 T and using the second-harmonic resonance of microwaves to produce a target plasma, a high-beta plasma is produced by NBI. The maximum central-beta and volume-average beta values are 3.6% and 2%, respectively. The paper describes the results of NBI heating experiments and the confinement and MHD activity properties of the plasmas in question.ximately inverse dependence on the local value of the poloidal magnetic field.",

author = "K. Uo and A. Iiyoshi and T. Obiki and O. Motojima and S. Morimoto and M. Wakatani and A. Sasaki and K. Kondo and M. Sato and K. Hanatani and T. Mutoh and H. Zushi and K. Kaneko and S. Besshou and M. Nakasuga and F. Sano and T. Mizuuchi and S. Sudo and Harris, {J. H.} and Rice, {J. E.} and Terry, {J. L.} and I. Ohtake and M. Iima and H. Okada and K. Magome",

year = "1984",

month = dec,

doi = "10.1088/0029-5515/24/12/003",

language = "English",

volume = "24",

pages = "1551--1560",

journal = "Nuclear Fusion",

issn = "0029-5515",

publisher = "IOP Publishing",

number = "12",

}

Uo, K, Iiyoshi, A, Obiki, T, Motojima, O, Morimoto, S, Wakatani, M, Sasaki, A, Kondo, K, Sato, M, Hanatani, K, Mutoh, T, Zushi, H, Kaneko, K, Besshou, S, Nakasuga, M, Sano, F, Mizuuchi, T, Sudo, S, Harris, JH, Rice, JE, Terry, JL, Ohtake, I, Iima, M, Okada, H & Magome, K 1984, 'Neutral-beam injection heating experiment on currentless plasma in the heliotron E device', Nuclear Fusion, vol. 24, no. 12, pp. 1551-1560. https://doi.org/10.1088/0029-5515/24/12/003

TY - JOUR

T1 - Neutral-beam injection heating experiment on currentless plasma in the heliotron E device

AU - Uo, K.

AU - Iiyoshi, A.

AU - Obiki, T.

AU - Motojima, O.

AU - Morimoto, S.

AU - Wakatani, M.

AU - Sasaki, A.

AU - Kondo, K.

AU - Sato, M.

AU - Hanatani, K.

AU - Mutoh, T.

AU - Zushi, H.

AU - Kaneko, K.

AU - Besshou, S.

AU - Nakasuga, M.

AU - Sano, F.

AU - Mizuuchi, T.

AU - Sudo, S.

AU - Harris, J. H.

AU - Rice, J. E.

AU - Terry, J. L.

AU - Ohtake, I.

AU - Iima, M.

AU - Okada, H.

AU - Magome, K.

PY - 1984/12

Y1 - 1984/12

N2 - Recent results of the neutral-beam heating experiments (NBI) on the Heliotron E plasma are reported. The target plasma for NBI is produced by electron cyclotron resonance heating (ECRH), using two gyrotrons (53.2 GHz, 200 kW × 2). The neutral beams of 2.9 MWmax are injected 20 to 40 ms afterwards in order to produce a high-energy currentless plasma. At a magnetic field of 1.9 T, a maximum ion temperature of 1.0 keV is obtained at a density of 1.9 × 1013 cm−3. The maximumeτE is 2.4 × 1012 cm −3⋅s. By reducing the magnetic field to 0.94 T and using the second-harmonic resonance of microwaves to produce a target plasma, a high-beta plasma is produced by NBI. The maximum central-beta and volume-average beta values are 3.6% and 2%, respectively. The paper describes the results of NBI heating experiments and the confinement and MHD activity properties of the plasmas in question.ximately inverse dependence on the local value of the poloidal magnetic field.

AB - Recent results of the neutral-beam heating experiments (NBI) on the Heliotron E plasma are reported. The target plasma for NBI is produced by electron cyclotron resonance heating (ECRH), using two gyrotrons (53.2 GHz, 200 kW × 2). The neutral beams of 2.9 MWmax are injected 20 to 40 ms afterwards in order to produce a high-energy currentless plasma. At a magnetic field of 1.9 T, a maximum ion temperature of 1.0 keV is obtained at a density of 1.9 × 1013 cm−3. The maximumeτE is 2.4 × 1012 cm −3⋅s. By reducing the magnetic field to 0.94 T and using the second-harmonic resonance of microwaves to produce a target plasma, a high-beta plasma is produced by NBI. The maximum central-beta and volume-average beta values are 3.6% and 2%, respectively. The paper describes the results of NBI heating experiments and the confinement and MHD activity properties of the plasmas in question.ximately inverse dependence on the local value of the poloidal magnetic field.

UR - http://www.scopus.com/inward/record.url?scp=0021620703&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/24/12/003

DO - 10.1088/0029-5515/24/12/003

M3 - Article

AN - SCOPUS:0021620703

SN - 0029-5515

VL - 24

SP - 1551

EP - 1560

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 12

ER -

Neutral-beam injection heating experiment on currentless plasma in the heliotron E device

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