First detachment studies on COMPASS tokamak using nitrogen seeding.

Komm, Michael; Cavalier, Jordan; Seidl, Jakub; Adámek, Jiří; Bílková, Petra; Böhm, Petr; Devitre, A.; Dimitrova, Miglena; Elmore, S.; Faitsch, M.; Háček, Pavel; Havlíček, Josef; Imríšek, Martin; Krbec, Jaroslav; Peterka, Matěj; Pánek, Radomír; Popov, T.; Tomeš, Matěj; Weinzettl, Vladimír

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First detachment studies on COMPASS tokamak using nitrogen seeding.

1.

SYSNO ASEP	0481899
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	Conference Paper
Title	First detachment studies on COMPASS tokamak using nitrogen seeding.
Author(s)	Komm, Michael (UFP-V)_{RID, ORCID} Cavalier, Jordan (UFP-V)_{RID, ORCID} Seidl, Jakub (UFP-V)_RID Adámek, Jiří (UFP-V)_{RID, ORCID} Bílková, Petra (UFP-V)_RID Böhm, Petr (UFP-V)_RID Devitre, A. (CR) Dimitrova, Miglena (UFP-V)_ORCID Elmore, S. (GB) Faitsch, M. (DE) Háček, Pavel (UFP-V)_{RID, ORCID} Havlíček, Josef (UFP-V)_{RID, ORCID} Imríšek, Martin (UFP-V)_RID Krbec, Jaroslav (UFP-V) Peterka, Matěj (UFP-V)_{RID, ORCID} Pánek, Radomír (UFP-V)_RID Popov, T. (BG) Tomeš, Matěj (UFP-V) Weinzettl, Vladimír (UFP-V)_{RID, ORCID}
Article number	P1.118
Source Title	EPS 2017: 44th European Physical Society Conference on Plasma Physics, 41F. - Mulhouse : European Physical Society, 2017 / Fajardo M. ; Westerhof E. ; Riconda C. ; Melzer A. ; Bret A. ; Dromey B. - ISBN 979-10-96389-07
Number of pages	4 s.
Publication form	Online - E
Action	EPS 2017 Conference on Plasma Physics/44./
Event date	26.06.2017 - 30.06.2017
VEvent location	Belfast
Country	IE - Ireland
Event type	EUR
Language	eng - English
Country	FR - France
Keywords	COMPASS ; tokamaks ; plasma
Subject RIV	BL - Plasma and Gas Discharge Physics
OECD category	Fluids and plasma physics (including surface physics)
R&D Projects	GA16-14228S GA ČR - Czech Science Foundation (CSF)
	GA15-10723S GA ČR - Czech Science Foundation (CSF)
	8D15001 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UFP-V - RVO:61389021
Annotation	Partial detachment is considered to be a mandatory regime for ITER and next-step devices, as it allows to dissipate a substantial part of the heat flux carried by the plasma particles and significantly reduce the heat fluxes deposited on the divertor target tiles. Despite that, most studies of power deposition in contemporary tokamaks were performed in attached plasmas[1]. Detached regimes tend to be more difficult to access and diagnose - for example the infrared thermography (the principal diagnostics for such studies) suffers from interference caused by increased bremsstrahlung in the infrared spectrum in detached plasmas. COMPASS has a combination of a relatively short connection length to the target and an open divertor geometry, which was considered unfavourable for detachment access. In order to facilitate access to partially detached regime of operation, impurity seeding in the divertor region can be employed. In this paper, we report on first results from the impurity seeding experiments, which were performed in Ohmic plasmas.
Workplace	Institute of Plasma Physics
Contact	Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975
Year of Publishing	2018

Number of the records: 1