Výsledky vyhledávání - "S.P. Hirshman"

Parallel Reconstruction of Three Dimensional Magnetohydrodynamic Equilibria in Plasma Confinement Devices

Autor: Mark Cianciosa, Sudip K. Seal, Andreas Wingen, S.P. Hirshman, Robert Wilcox, Ezekial A Unterberg

Publikováno v: ICPP

Fast, accurate three dimensional reconstructions of plasma equilibria, crucial for physics interpretation of fusion data generated within confinement devices like stellarators/ tokamaks, are computationally very expensive and routinely require days,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69c0b3f5e25a53f80fdab0fa439c0876
https://doi.org/10.1109/icpp.2017.37

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Extension of the SIESTA MHD equilibrium code to free-plasma-boundary problems

Autor: Hugo Peraza-Rodriguez, Raul Sanchez, Mark Cianciosa, J. M. Reynolds-Barredo, S.P. Hirshman, J. Geiger, Victor Tribaldos

Publikováno v: Physics of Plasmas
e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid
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is a recently developed MHD equilibrium code designed to perform fast and accurate calculations of ideal MHD equilibria for three-dimensional magnetic configurations. Since SIESTA does not assume closed magnetic surfaces, the solution can exhibit mag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a7bd14c3c263ca3f0564f6ec72c2952

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Revisiting parallel cyclic reduction and parallel prefix-based algorithms for block tridiagonal systems of equations

Autor: Kalyan S. Perumalla, Sudip K. Seal, S.P. Hirshman

Publikováno v: Journal of Parallel and Distributed Computing. 73:273-280

Direct solvers based on prefix computation and cyclic reduction algorithms exploit the special structure of tridiagonal systems of equations to deliver better parallel performance compared to those designed for more general systems of equations. This

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ae27c81f7a59d9d25d8d859bcbabf21c
https://doi.org/10.1016/j.jpdc.2012.10.003

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PARVMEC: An Efficient, Scalable Implementation of the Variational Moments Equilibrium Code

Autor: Andreas Wingen, Mark Cianciosa, Ezekial A Unterberg, Robert Wilcox, Sudip K. Seal, S.P. Hirshman

Publikováno v: ICPP

The ability to sustain magnetically confined plasma in a state of stable equilibrium is crucial for optimal and cost-effective operations of fusion devices like tokamaks and stellarators. The Variational Moments Equilibrium Code (VMEC) is the de-fact

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a906d22788260d811af9e4093fd2fa1d
https://doi.org/10.1109/icpp.2016.77

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Investigation of island formation due to RMPs in DIII-D plasmas with the SIESTA resistive MHD equilibrium code

Autor: John Canik, Morgan Shafer, Sudip K. Seal, S.P. Hirshman

Publikováno v: Journal of Plasma Physics. 82

The SIESTA magnetohydrodynamic (MHD) equilibrium code has been used to compute a sequence of ideally stable equilibria resulting from numerical variation of the helical resonant magnetic perturbation (RMP) applied to an axisymmetric DIII-D plasma equ

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75024c10a8185691ec9149ccb914288a
https://doi.org/10.1017/s0022377816000143

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Overview of the RFX-Mod Fusion Science Activity

Autor: Zuin M., Dal Bello S., Marrelli L., Puiatti M.E., Agostinetti P., Agostini M., Antoni V., F. Auriemma, M. Barbisan, T. Barbui, M. Baruzzo, F. Belli, P. Bettini, M. Bigi, R. Bilel, M. Boldrin, T. Bolzonella, D. Bonfiglio, M. Brombin, A. Buffa, A. Canton, S. Cappello, L. Carraro, R. Cavazzana, D. Cester, L. Chacon, B.E. Chapman, G. Chitarin, W.A. Cooper, L. Cordaro, M. Dalla Palma, S. Deambrosis, R. Delogu, A. De Lorenzi, G. De Masi, J.Q. Dong, D.F. Escande, B. Esposito, A. Fassina, F. Felici, A. Ferro, C. Finotti, P. Franz, L. Frassinetti 0, E. Gaio, F. Ghezzi, L. Giudicotti, F. Gnesotto, M. Gobbin, W.A. Gonzalez, L. Grando, S.C. Guo, J.D. Hanson, S.P. Hirshman, P. Innocente, J.L. Jackson, S. Kiyama, M. Komm, O. Kudlacek, L. Laguardia, C. Li, S.F. Liu, Y.Q. Liu, D. López- Bruna, R. Lorenzini, T.C. Luce, A. Luchetta, A. Maistrello, G. Manduchi, D.K. Mansfield, G. Marchiori, N. Marconato, D. Marocco, D. Marcuzzi, P. Martin, E. Martines, S. Martini, G. Mazzitelli, E. Miorin, B. Momo, M. Moresco, Y. Narushima, M. Okabayashi, R. Paccagnella, N. Patel, M. Pavei, S. Peruzzo, N. Pilan, L. Pigatto, R. Piovan, P. Piovesan, C. Piron, L. Piron, I. Predebon, C. Rea, M. Recchia, A. Rizzolo, A.L. Roquemore, G. Rostagni, C Ruset, L. Sajò- Bohus 0, H. Sakakita, R. Sanchez, J.S. Sarff, F. Sattin, P. Scarin, O. Schmitz, W. Schneider, M. Siragusa, P. Sonato, E. Spada, S. Spagnolo, M. Spolaore, D.A. Spong, G. Spizzo, L. Stevanato, Y. Suzuki, C. Taliercio, D. Terranova, G. Urso, M. Valente, M. Valisa, M. Vallar, M. Veranda, N. Vianello, F. Villone, P. Vincenzi, N. Visonà, Z.R. Wang, R.B. White, P. Xanthopoulos, X.Y. Xu, V. Yanovskiy, A. Zamengo, P. Zanca, B. Zaniol, L. Zanotto, E. Zilli

Publikováno v: 26th IAEA Fusion Energy Conference, Kyoto, Japan, 17-22 October 2016
info:cnr-pdr/source/autori:Zuin M.; Dal Bello S.; Marrelli L.; Puiatti M.E.; Agostinetti P.; Agostini M.; Antoni V.; F. Auriemma; M. Barbisan; T. Barbui; M. Baruzzo; F. Belli; P. Bettini; M. Bigi; R. Bilel; M. Boldrin; T. Bolzonella; D. Bonfiglio; M. Brombin; A. Buffa; A. Canton; S. Cappello; L. Carraro; R. Cavazzana; D. Cester; L. Chacon; B.E. Chapman; G. Chitarin; W.A. Cooper; L. Cordaro; M. Dalla Palma; S. Deambrosis; R. Delogu; A. De Lorenzi; G. De Masi; J.Q. Dong; D.F. Escande; B. Esposito; A. Fassina; F. Felici ; A. Ferro; C. Finotti; P. Franz; L. Frassinetti 0; E. Gaio; F. Ghezzi ; L. Giudicotti; F. Gnesotto; M. Gobbin; W.A. Gonzalez; L. Grando; S.C. Guo; J.D. Hanson; S.P. Hirshman; P. Innocente; J.L. Jackson; S. Kiyama; M. Komm; O. Kudlacek; L. Laguardia; C. Li; S.F. Liu; Y.Q. Liu; D. López-Bruna; R. Lorenzini; T.C. Luce ; A. Luchetta; A. Maistrello; G. Manduchi; D.K. Mansfield; G. Marchiori; N. Marconato; D. Marocco; D. Marcuzzi; P. Martin; E. Martines; S. Martini; G. Mazzitelli; E. Miorin; B. Momo; M. Moresco; Y. Narushima; M. Okabayashi; R. Paccagnella; N. Patel; M. Pavei; S. Peruzzo; N. Pilan; L. Pigatto; R. Piovan; P. Piovesan; C. Piron; L. Piron; I. Predebon; C. Rea; M. Recchia; A. Rizzolo; A.L. Roquemore; G. Rostagni; C Ruset; L. Sajò-Bohus 0; H. Sakakita; R. Sanchez; J.S. Sarff; F. Sattin; P. Scarin; O. Schmitz; W. Schneider; M. Siragusa; P. Sonato; E. Spada; S. Spagnolo; M. Spolaore; D.A. Spong; G. Spizzo; L. Stevanato; Y. Suzuki; C. Taliercio; D. Terranova; G. Urso; M. Valente; M. Valisa; M. Vallar; M. Veranda; N. Vianello; F. Villone; P. Vincenzi; N. Visonà; Z.R. Wang; R.B. White; P. Xanthopoulos; X.Y. Xu; V. Yanovskiy; A. Zamengo; P. Zanca; B. Zaniol; L. Zanotto; E. Zilli/congresso_nome:26th IAEA Fusion Energy Conference/congresso_luogo:Kyoto, Japan/congresso_data:17-22 October 2016/anno:2016/pagina_da:/pagina_a:/intervallo_pagine

This paper reports the main results of the RFX-mod fusion science activity since the last 2014 IAEA Fusion Energy Conference. The RFX-mod device is characterized by a unique flexibility in terms of accessible magnetic configurations. Axisymmetric and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::b8a44dd2f23f57b7546f640c9d1b07b9
http://www-pub.iaea.org/MTCD/Meetings/PDFplus/2016/cn234/cn234ProgrammeAndBookOfAbstracts.pdf

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Scaling the SIESTA magnetohydrodynamics equilibrium code

Autor: S.P. Hirshman, Sudip K. Seal, Kalyan S. Perumalla

Publikováno v: Concurrency and Computation: Practice and Experience. 25:2207-2223

SUMMARY We report the results of a scaling effort that increases both the speed and resolution of the SIESTA magnetohydrodynamics equilibrium code. SIESTA is capable of computing three-dimensional plasma equilibria with magnetic islands at high spati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0aff44e7895ddcb058b58104d4704a45
https://doi.org/10.1002/cpe.2919

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Shear flow generation in stellarators—configurational variations

Autor: Andrew Ware, Lee A. Berry, Donald A. Spong, S.P. Hirshman, J. H. Harris

Publikováno v: Nuclear Fusion. 47:626-633

Plasma momentum transport within magnetic surfaces plays a fundamental role in a number of toroidal plasma physics issues, such as turbulence suppression, impurity transport, bootstrap current generation and the shielding of resonant magnetic error f

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::774e0e469a36f22e5c9b7d7dd24d57ce
https://doi.org/10.1088/0029-5515/47/7/013

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