TJ-II: Influence of magnetic configuration on filament dynamics
Experimental campaign
2021
Proposal title
TJ-II: Influence of magnetic configuration on filament dynamics
Name and affiliation of proponent
Daniel Carralero, Ulises Losada, Boudewijn van Milligen, Gustavo Grenfell et al.,
Details of contact person at LNF
Daniel Carralero
Description of the activity
Strong difference in magnetic curvature has a strong impact on interchange force and so potentially in the blob dynamics [D. Carralero et al. Phys. Rev. Lett. 115.21 215002 (2015)].
TJ-II is equipped with a dual system of multi-probes arrays placed at two different toroidal and poloidal locations [probes B and D] [T. Kobayashi, U. Losada, B. Liu et al., Nuclear Fusion 59, 044006 (2019)]. While probe B lies in a neutral to favorable curvature probe D is in an unfavorable negative curvature zone. This makes TJ-II a unique device to explore (simultaneously) the influence of magnetic curvature on blob dynamics.
The goal of this research proposal is:
1. Characterize filaments and evaluate filament propagation models, already tested in tokamaks.
2. Describe and understand the effect of topologic features (e.g. islands, different curvature and connection lengths, etc.) to filament characteristics.
International or National funding project or entity
If applicable, enter funding here or write N/A
Description of required resources
Required resources:
- Number of plasma discharges or days of operation:
- Essential diagnostic systems: Dual Langmuir probe system in TJ-II
- Type of plasmas (heating configuration):
- Specific requirements on wall conditioning if any:
- External users: need a local computer account for data access: yes/no
- Any external equipment to be integrated? Provide description and integration needs:
Preferred dates and degree of flexibility
Preferred dates: (format dd-mm-yyyy)
References