Výsledky vyhledávání - "Hughes Jr, Jerry"

Alcator C-Mod: research in support of ITER and steps beyond

Autor: Candy, J., Canik, J., Churchill, R.M., Holland, C., Loarte, A., Reinke, M.L., Scott, S., Snyder, P., Theiler, C., Diallo, A., Edlund, E., LaBombard, B., Baek, Seung Gyou, Marmar, Earl S, Barnard, Harold Salvadore, Bonoli, Paul T, Brunner, Daniel Frederic, Ennever, Paul Chappell, Fiore, Catherine L, Gao, Chi, Golfinopoulos, Theodore, Greenwald, Martin J, Hartwig, Zachary Seth, Hubbard, Amanda E, Hughes Jr, Jerry, Hutchinson, Ian Horner, Irby, James Henderson, Labombard, Brian, Lin, Yijun, Mumgaard, Robert Thomas, Parker, Ronald R, Porkolab, Miklos, Rice, John E, Shiraiwa, Shunichi, Sorbom, Brandon Nils, Terry, David Rankin, Terry, James L, Vieira, Rui F, Walk Jr, John R, Wallace, Gregory Marriner, White, Anne E., Whyte, Dennis G, Wolfe, Stephen M, Wright, John C, Wright, Graham, Wukitch, Stephen James, Xu, Peng, Cziegler, Istvan, Dekow, Gary L, Delgado-Aparicio, Luis, Lipschultz, Bruce, Theiler, Christian, Diallo, Ahmed Y, Edlund, Eric Matthias, Faust, Ian Charles

Publikováno v: Prof. Hutchinson via Chris Sherratt

This paper presents an overview of recent highlights from research on Alcator C-Mod. Significant progress has been made across all research areas over the last two years, with particular emphasis on divertor physics and power handling, plasma–mater

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d008d5fd8fc2b3de2e7f6dcda822c1da
https://orcid.org/0000-0003-4432-5504

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LHCD during current ramp experiments on Alcator C-Mod

Autor: Gregory Wallace, S. D. Scott, Syun'ichi Shiraiwa, Robert Mumgaard, Jerry Hughes, Francesca Poli, S.J. Wukitch, M. Chilenski

Publikováno v: EPJ Web of Conferences
EPJ Web of Conferences, Vol 157, p 03063 (2017)

The lower hybrid current drive (LHCD) system on Alcator C-Mod is capable of sustaining fully non-inductive discharges for multiple current relaxation times (τ cr ∼ 200 ms) at line averaged densities in the range of 5x10 19 m -3 . Some of these non

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::496e194b8350a4663540c54cdc1379ca
https://orcid.org/0000-0002-3757-7730

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Experimentally testing the dependence of momentum transport on second derivatives using Gaussian process regression

Autor: Martin Greenwald, John Rice, Jerry Hughes, M. Chilenski, Amanda Hubbard, Anne White, Youssef M. Marzouk, Jungpyo Lee

Publikováno v: MIT Web Domain

It remains an open question to explain the dramatic change in intrinsic rotation induced by slight changes in electron density (White et al 2013 Phys. Plasmas 20 056106). One proposed explanation is that momentum transport is sensitive to the second

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be1b2f24e745e9357559b8aaf01f685c
https://orcid.org/0000-0003-2951-9749

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The effects of main-ion dilution on turbulence in low q[subscript 95] C-Mod ohmic plasmas, and comparisons with nonlinear GYRO

Autor: Matthew Reinke, J.C. Rost, J. E. Rice, G. M. Staebler, Jeff Candy, Miklos Porkolab, Paul Ennever, D.R. Ernst, Jerry Hughes, Alcator C-Mod Team, S. G. Baek

Publikováno v: MIT Web Domain

Recent experiments on C-mod seeding nitrogen into ohmic plasmas with [subscript q]95 = 3.4 found that the seeding greatly reduced long-wavelength (ITG-scale) turbulence. The long-wavelength turbulence that was reduced by the nitrogen seeding was loca

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6be4c819482dc3f63d6650da495f398f
https://orcid.org/0000-0002-9518-4097

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Multi-device studies of pedestal physics and confinement in the I-mode regime

Publikováno v: Prof. Whyte via Chris Sherratt
Nuclear Fusion

This paper describes joint ITPA studies of the I-mode regime, which features an edge thermal barrier together with L-mode-like particle and impurity transport and no edge localized modes (ELMs). The regime has been demonstrated on the Alcator C-Mod,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ffadb26e32ed76a51f28a6e5ce63b83
https://orcid.org/0000-0003-1004-5782

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Lower hybrid wave edge power loss quantification on the Alcator C-Mod tokamak

Autor: Dan Brunner, Jerry Hughes, Gregory Wallace, Adam Kuang, Ian Faust, E.M. Edlund, Amanda Hubbard, J.L. Terry, Dennis G. Whyte, Ronald R. Parker, Brian LaBombard, S. Shiraiwa, J.R. Walk, Matthew Reinke, Seung Gyou Baek

Publikováno v: Prof. Whyte via Chris Sherratt

For the first time, the power deposition of lower hybrid RF waves into the edge plasma of a diverted tokamak has been systematically quantified. Edge deposition represents a parasitic loss of power that can greatly impact the use and efficiency of Lo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1495b0a8f6507e3779b35df1cbab4a3b
http://hdl.handle.net/1721.1/108781

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Core impurity transport in Alcator C-Mod L-, I- and H-mode plasmas

Publikováno v: Prof. Whyte via Chris Sherratt

Core impurity transport has been investigated for a variety of confinement regimes in Alcator C-Mod plasmas from x-ray emission following injection of medium and high Z materials. In ohmic L-mode discharges, impurity transport is anomalous (D[subscri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83a3f6c47d50822c80ff41b0320731b7
https://orcid.org/0000-0003-2951-9749

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Poloidal asymmetries in edge transport barriers

Autor: Amanda Hubbard, Ian H. Hutchinson, C.S. Chang, Peter J. Catto, Alcator C-Mod Team, D.R. Ernst, Paul Ennever, Matt Landreman, D.G. Whyte, Robert Hager, Jerry Hughes, Randy Michael Churchill, Christian Theiler, Matthew Reinke, Bruce Lipschultz, J.R. Walk

Publikováno v: Prof. Whyte via Chris Sherratt
Physics of Plasmas

Measurements of impurities in Alcator C-Mod indicate that in the pedestal region, significant poloidal asymmetries can exist in the impurity density, ion temperature, and main ion density. In light of the observation that ion temperature and electros

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::067ad7144096b9b1e5b168ed7ece7836
http://hdl.handle.net/1721.1/108729

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The physics mechanisms of the weakly coherent mode in the Alcator C-Mod Tokamak

Autor: T. Y. Xia, D.G. Whyte, Z. X. Liu, T. Zhang, Amanda Hubbard, J.R. Walk, Jiuyuan Li, S. G. Baek, Xueqiao Xu, Christian Theiler, Theodore Golfinopoulos, Jerry Hughes, Xiang Gao

Publikováno v: MIT Web Domain

The weakly coherent mode (WCM) in I-mode has been studied by a six-field two-fluid model based on the Braginskii equations under the BOUT++ framework for the first time. The calculations indicate that a tokamak pedestal exhibiting a WCM is linearly u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02364efd11427715cc62d7082dfccf62
https://doi.org/10.1063/1.4972088

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Stationary density profiles in the Alcator C-mod tokamak

Autor: D.R. Ernst, Jay Kesner, S. D. Scott, D.G. Whyte, Jerry Hughes, Syun'ichi Shiraiwa, Robert Mumgaard

Publikováno v: MIT Web Domain

In the absence of an internal particle source, plasma turbulence will impose an intrinsic relationship between an inwards pinch and an outwards diffusion resulting in a stationary density profile. The Alcator C-mod tokamak utilizes RF heating and cur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::799e5f2c58331e193410be517b9c92de
https://orcid.org/0000-0002-3757-7730

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