Evidence on the effects of main-chamber neutrals on density shoulder broadening
Open Access
- 1 June 2022
- journal article
- research article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 29 (6)
Abstract
Evidence that density shoulder broadening is dependent on high main-chamber neutral density is presented. Shoulder broadening does not occur when the sources for main-chamber neutrals are minimized using divertor baffles and wide gaps to the first wall (∼3× the density decay length). Removing the baffles or reducing the gap to the inner wall both act to increase the density shoulder amplitude in otherwise identical TCV discharges. Radial turbulent transport is correlated with shoulder amplitude.Keywords
Funding Information
- U.S. Department of Energy (DE-SC0010529)
- EUROfusion Consortium (633053)
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