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Part 1: Document Description
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Citation |
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Title: |
Multi-device Studies of Pedestal Physics and Confinement in the I-mode Regime |
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Identification Number: |
doi:10.7910/DVN/JDPLN1 |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2021-04-01 |
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Version: |
1 |
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Bibliographic Citation: |
A. E. Hubbard; T. Osborne; F. Ryter; X. Gao; J. Ko; L. Barrera Orte; R. M. Churchill; I. Cziegler; M. Fenstermacher; R. Fischer; S. Gerhardt; R. Groebner; P. Gohil; T. Happel; J. W. Hughes; Z.X. Liu; A. Loarte; R. Maingi; A. Marinoni; E. S. Marmar; R.M. McDermott; G. McKee; T. Rhodes; J.E. Rice; L. Schmitz; C. Theiler; E. Viezzer; J. R. Walk; A. White; D. Whyte; S. Wolfe; E. Wolfrum; Z. Yan; T. Zhang; Alcator C-Mod Team; ASDEX Upgrade Team; DIII-D Team, 2021, "Multi-device Studies of Pedestal Physics and Confinement in the I-mode Regime", https://doi.org/10.7910/DVN/JDPLN1, Harvard Dataverse, V1 |
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Citation |
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Title: |
Multi-device Studies of Pedestal Physics and Confinement in the I-mode Regime |
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Identification Number: |
doi:10.7910/DVN/JDPLN1 |
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Authoring Entity: |
A. E. Hubbard; T. Osborne; F. Ryter; X. Gao; J. Ko; L. Barrera Orte; R. M. Churchill; I. Cziegler; M. Fenstermacher; R. Fischer; S. Gerhardt; R. Groebner; P. Gohil; T. Happel; J. W. Hughes; Z.X. Liu; A. Loarte; R. Maingi; A. Marinoni; E. S. Marmar; R.M. McDermott; G. McKee; T. Rhodes; J.E. Rice; L. Schmitz; C. Theiler; E. Viezzer; J. R. Walk; A. White; D. Whyte; S. Wolfe; E. Wolfrum; Z. Yan; T. Zhang; Alcator C-Mod Team; ASDEX Upgrade Team; DIII-D Team |
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Distributor: |
Harvard Dataverse |
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Study Scope |
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Keywords: |
Physics, Alcator C-Mod, I-mode regime, pedestal physics, tokamaks, transition thresholds |
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Abstract: |
This paper describes joint ITPA studies of the I-mode regime, which features an edge thermal barrier but with L-mode-like particle and impurity transport, and without ELMs. The regime has been demonstrated on Alcator C-Mod, ASDEX Upgrade and DIII-D tokamaks, over a wide range of device parameters and pedestal conditions, including low collisionality. Access to I-mode is independent of heating method (neutral beam injection, ICRH and/or ECRH). Normalized energy confinement H98y,2 ≥ 1 has been achieved for a range of 3≤q95≤4.9 and scales favourably with power. Changes in turbulence in the pedestal region accompany the transition from L-mode to I-mode. The L-I threshold increases with plasma density and current, and with device size, but weakly with BT. The upper limit of power for I-modes increases with toroidal field, and is largest on Alcator C-Mod at B > 5 T. Issues for extrapolation to ITER and other future fusion devices are discussed. |
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Notes: |
<a href="http://library.psfc.mit.edu/catalog/reports/2010/14ja/14ja043/abstract.php">PSFC REPORT PSFC/JA-14-43</a><br /><br />Work in U.S. supported by the U.S. Department of Energy, Office of Science, Office of Fusion Energy Sciences, using User Facilities Alcator C-Mod and DIII-D, under Award Numbers DE-FC02-99ER54512-CMOD, DE-FC02-04ER54698, DE-FG02-94ER54235, DE-AC52-07NA27344, DE-AC02-09CH11466, DE-FG02-89ER53296, DE-FG02- 08ER54999, and DE-FG02-08ER54984. Reproduction, translation, publication, use and disposal, in whole or in part, by or for the United States government is permitted. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Other Study Description Materials |
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Label: |
14ja043_archival_manuscript.pdf |
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Text: | |
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Notes: |
application/pdf |