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Original title:
Non-linear simulations of the interaction of pre-existing magnetic islands in tokamak plasmas with massive deuterium injection for disruption mitigation
Translated title:
Nichtlineare Simulationen der Wechselwirkung von bereits bestehender magnetischen Inseln in Tokamak-Plasmen mit massiver Deuterium-Injektion zur Disruptions-Mitigation
Author:
Wieschollek, Fabian
Year:
2023
Document type:
Dissertation
Faculty/School:
TUM School of Natural Sciences
Advisor:
Günter, Sibylle (Prof. Dr.)
Referee:
Günter, Sibylle (Prof. Dr.); Futatani, Shimpei (Prof. Dr.)
Language:
en
Subject group:
PHY Physik
TUM classification:
PHY 000
Abstract:
Shattered Pellet Injection (SPI) is the approach for disruption mitigation selected for ITER. Deuterium-SPI could help to reduce the generation of runaway electrons. However, when injected during the disruption onset phase, it may interact with pre-existing MHD activity, namely the 2/1 tearing mode. In this thesis, magneto-hydrodynamic simulations are performed to analyze these interactions based on an ASDEX Upgrade plasma. Several parameter scans were performed to deepen the understanding.
Translated abstract:
Shattered Pellet Injection (SPI) ist das für ITER gewählte Konzept zur Disruption-Mitigation. Deuterium-SPI könnte dazu beitragen, die Erzeugung von Runaway-Elektronen zu reduzieren. Wird es jedoch während der Disruptionsanfangshase injiziert, kann es mit der bereits bestehender MHD-Aktivität interagieren, vor allem der 2/1-Tearing-Mode. In dieser Arbeit werden magnetohydrodynamische Simulationen durchgeführt, um diese Wechselwirkungen anhand eines ASDEX Upgrade-Plasmas zu analysieren.
WWW:
https://mediatum.ub.tum.de/?id=1696387
Date of submission:
03.04.2023
Oral examination:
30.10.2023
File size:
34460997 bytes
Pages:
108
Urn (citeable URL):
https://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:91-diss-20231030-1696387-1-0
Last change:
01.12.2023
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