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Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade.

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Title: Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade.
Authors: B. Labit1 benoit.labit@epfl.ch, T. Eich2, G.F. Harrer3, E. Wolfrum2, M. Bernert2, M.G. Dunne2, L. Frassinetti4, P. Hennequin5, R. Maurizio1, A. Merle1, H. Meyer6, S. Saarelma6, U. Sheikh1, J. Adamek7, M. Agostini8, D. Aguiam9, R. Akers6, R. Albanese10, C. Albert11, E. Alessi12
Source: Nuclear Fusion. Aug2019, Vol. 59 Issue 8, p1-1. 1p.
Subjects: Plasma density, Geometric shapes
Abstract: Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Fusion is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 137462265
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  Data: Dependence on plasma shape and plasma fueling for small edge-localized mode regimes in TCV and ASDEX Upgrade.
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  Data: <searchLink fieldCode="AR" term="%22B%2E+Labit%22">B. Labit</searchLink><relatesTo>1</relatesTo><i> benoit.labit@epfl.ch</i><br /><searchLink fieldCode="AR" term="%22T%2E+Eich%22">T. Eich</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22G%2EF%2E+Harrer%22">G.F. Harrer</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22E%2E+Wolfrum%22">E. Wolfrum</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22M%2E+Bernert%22">M. Bernert</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22M%2EG%2E+Dunne%22">M.G. Dunne</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22L%2E+Frassinetti%22">L. Frassinetti</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22P%2E+Hennequin%22">P. Hennequin</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22R%2E+Maurizio%22">R. Maurizio</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22A%2E+Merle%22">A. Merle</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22H%2E+Meyer%22">H. Meyer</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22S%2E+Saarelma%22">S. Saarelma</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22U%2E+Sheikh%22">U. Sheikh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22J%2E+Adamek%22">J. Adamek</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22M%2E+Agostini%22">M. Agostini</searchLink><relatesTo>8</relatesTo><br /><searchLink fieldCode="AR" term="%22D%2E+Aguiam%22">D. Aguiam</searchLink><relatesTo>9</relatesTo><br /><searchLink fieldCode="AR" term="%22R%2E+Akers%22">R. Akers</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22R%2E+Albanese%22">R. Albanese</searchLink><relatesTo>10</relatesTo><br /><searchLink fieldCode="AR" term="%22C%2E+Albert%22">C. Albert</searchLink><relatesTo>11</relatesTo><br /><searchLink fieldCode="AR" term="%22E%2E+Alessi%22">E. Alessi</searchLink><relatesTo>12</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Fusion%22">Nuclear Fusion</searchLink>. Aug2019, Vol. 59 Issue 8, p1-1. 1p.
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  Data: Within the EUROfusion MST1 work package, a series of experiments has been conducted on AUG and TCV devices to disentangle the role of plasma fueling and plasma shape for the onset of small ELM regimes. On both devices, small ELM regimes with high confinement are achieved if and only if two conditions are fulfilled at the same time. Firstly, the plasma density at the separatrix must be large enough (), leading to a pressure profile flattening at the separatrix, which stabilizes type-I ELMs. Secondly, the magnetic configuration has to be close to a double null (DN), leading to a reduction of the magnetic shear in the extreme vicinity of the separatrix. As a consequence, its stabilizing effect on ballooning modes is weakened. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Nuclear Fusion is the property of IOP Publishing and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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