Zobrazeno 1 - 10
of 206
pro vyhledávání: '"G J Kramer"'
Plasma shape effects on the Alfvén eigenmode spectrum through Alfvén slow-magnetosonic wave coupling
Autor:
G J Kramer, C Z Cheng
Publikováno v:
Plasma Physics and Controlled Fusion. 65:015015
The effect of the plasma shaping (triangularity and elongation) on the continuous spectrum, frequency gaps, and number of eigenmodes is studied. The plasma shaping affects the coupling between Alfvén and slow magnetosonic waves via the geodesic magn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::034bcd97777fb4c481c4d13e6610010e
https://doi.org/10.1088/1361-6587/aca828
https://doi.org/10.1088/1361-6587/aca828
Publikováno v:
Plasma Physics and Controlled Fusion. 64:125014
Using the SPIRAL Monte Carlo, full particle-orbit simulation code, we investigate the effects of neoclassical tearing modes (NTMs) and toroidal field (TF) ripple on alpha power losses during steady-state operation of the SPARC primary reference disch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2129e114079828c8d750378704c2e69
https://doi.org/10.1088/1361-6587/ac9ed8
https://doi.org/10.1088/1361-6587/ac9ed8
Autor:
B. J. Tobias, J. H. Cao, Yilun Zhu, Neville C. Luhmann, Orso Meneghini, C. Luo, Yang Ren, G. J. Kramer, Y. Zou, Ahmed Diallo, Guanying Yu, Sterling Smith, Y. Wang
Publikováno v:
The Review of scientific instruments. 92(3)
An Electron Cyclotron Emission Imaging (ECEI) data analysis module has been developed for the OMFIT platform to accommodate the needs of users at the DIII-D tokamak for physics applications. The user can easily access the ECEI spatial observation win
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15dc2e34d5609567dac1f82b24393cd6
https://pubmed.ncbi.nlm.nih.gov/33820069
https://pubmed.ncbi.nlm.nih.gov/33820069
Autor:
B. J. Tobias, G. J. Kramer, Calvin Domier, Ying Chen, J.H. Yu, C. Luo, Neville C. Luhmann, Ahmed Diallo, Yu Ye, Yilun Zhu, Xiaodong Li, Guanying Yu, M. Chen, Yang Ren
Publikováno v:
The Review of scientific instruments. 91(9)
Monolithic, millimeter-wave "system-on-chip" (SoC) technology has been employed in heterodyne receiver integrated circuit radiometers in a newly developed Electron Cyclotron Emission Imaging (ECEI) system on the DIII-D tokamak for 2D electron tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6097df439cce7d6dc1b3db0378b1f07
https://pubmed.ncbi.nlm.nih.gov/33003819
https://pubmed.ncbi.nlm.nih.gov/33003819
Autor:
John Wright, E.A. Tolman, S. D. Scott, Jari Varje, G. J. Kramer, Pablo Rodriguez-Fernandez, Antti Snicker, K. Särkimäki
Potential loss of energetic ions including alphas and radio-frequency tail ions due to classical orbit effects and magnetohydrodynamic instabilities (MHD) are central physics issues in the design and experimental physics programme of the SPARC tokama
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adc50d93c28ad124fcf7ca2c369d90a7
https://aaltodoc.aalto.fi/handle/123456789/47341
https://aaltodoc.aalto.fi/handle/123456789/47341
We present a sawtooth model that explains observations where the central safety factor, $q_0$, stays well below one, which is irreconcilable with current models that predict a reset to $q_0=1$ after the crash. We identify the structure of the field a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::181b2f082d147f9f76e4c9f55a534f5a
http://arxiv.org/abs/2007.04529
http://arxiv.org/abs/2007.04529
Autor:
John Wright, G. J. Kramer, Syun'ichi Shiraiwa, Cornwall Lau, T. DeHaas, RF SciDAC Team, Nicola Bertelli, X. Yang, Eun-Hwa Kim, B. Van Compernolle
Publikováno v:
THE 6TH INTERNATIONAL CONFERENCE ON BIOLOGICAL SCIENCE ICBS 2019: “Biodiversity as a Cornerstone for Embracing Future Humanity”.
This paper reports the significant advancement of our ability to model and to understand how RF waves interact with the SOL plasma, by simulating the full torus 3D SOL plasma together with the antenna and core plasma. We introduce and use a recently
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab924a6da1d6ce1a6303bfe3b06f6e20
https://doi.org/10.1063/5.0013580
https://doi.org/10.1063/5.0013580
Autor:
S. R. Haskey, Arash Ashourvan, S. Banerjee, K. Barada, E. A. Belli, A. Bortolon, J. Candy, J. Chen, C. Chrystal, B. A. Grierson, R. J. Groebner, F. M. Laggner, M. Knolker, G. J. Kramer, M. R. Major, G. Mckee, G. M. Staebler, Z. Yan, M. A. Van Zeeland
Publikováno v:
Physics of Plasmas. 29:012506
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c4db6ad9579a3f424a4a92dc1144fb6
https://doi.org/10.1063/5.0072155
https://doi.org/10.1063/5.0072155
Publikováno v:
Physics of Plasmas. 28:074702
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c372a7e360f7e78cd3ec33a041f1573
https://doi.org/10.1063/5.0047711
https://doi.org/10.1063/5.0047711
Autor:
James R. Wilson, Michael Jaworski, Lane Roquemore, Nicola Bertelli, G. Taylor, R.E. Bell, Rory Perkins, G. J. Kramer, J. C. Hosea
Publikováno v:
Nuclear Materials and Energy, Vol 12, Iss, Pp 283-288 (2017)
Radio-frequency (RF) rectification is an important sheath phenomenon for wave heating of plasma in fusion devices and is proposed to be the mechanism responsible for converting high-harmonic fast-wave (HHFW) power in the National Spherical Torus eXpe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a82cd182a6d62b0aa8ac9a6c5114a206
https://doi.org/10.1016/j.nme.2017.04.013
https://doi.org/10.1016/j.nme.2017.04.013