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Part 1: Document Description
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Citation |
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Title: |
Radial impurity flux measuring method with plasma heating in general geometry |
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Identification Number: |
doi:10.7910/DVN/K7OTF8 |
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Distributor: |
Harvard Dataverse |
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Date of Distribution: |
2018-10-25 |
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Version: |
1 |
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Bibliographic Citation: |
Espinosa, Silvia, and Catto, Peter J., 2018, "Radial impurity flux measuring method with plasma heating in general geometry", https://doi.org/10.7910/DVN/K7OTF8, Harvard Dataverse, V1 |
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Citation |
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Title: |
Radial impurity flux measuring method with plasma heating in general geometry |
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Identification Number: |
doi:10.7910/DVN/K7OTF8 |
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Authoring Entity: |
Espinosa, Silvia, and Catto, Peter J. |
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Distributor: |
Harvard Dataverse |
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Holdings Information: |
https://doi.org/10.7910/DVN/K7OTF8 |
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Study Scope |
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Keywords: |
Physics, natural fueling, pedestal, poloidal flow, poloidal flow measurement, radial impurity flux |
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Abstract: |
Devising a means to measure the radial impurity flux across the pedestal could be used to reduce impurity accumulation, if not prevent it while providing natural fueling, and thus improving fusion performance in tokamaks. We employ a novel solution procedure that takes advantage of the poloidal flow measurement to obtain the radial impurity flux directly from available diagnostics, such as charge exchange recombination spectroscopy and Thomson scattering. In the absence of our procedure a computationally demanding kinetic calculation of the full bulk ion response would be required at finite aspect ratio for the flux surface shape of interest. The more general form of the model considered here permits large toroidal impurity flow on the order of the impurity thermal speed. Moreover, it allows plasma heating techniques to be employed to actively modify the poloidal variation of the potential to adjust the location of impurity accumulation and thereby alter the radial impurity flux. |
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Notes: |
<a href="http://library.psfc.mit.edu/catalog/reports/2010/17ja/17ja006/abstract.php">PSFC REPORT PSFC/JA-17-6</a><br /><br />This work was supported by the U.S. Department of Energy, Grant No. DE-FG02-91ER54109 and La Caixa Fellowship. |
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Methodology and Processing |
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Sources Statement |
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Data Access |
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Notes: |
This dataset is made available without information on how it can be used. You should communicate with the Contact(s) specified before use. |
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Other Study Description Materials |
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Label: |
17ja006_archival_manuscript.pdf |
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Text: | |
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Notes: |
application/pdf |