Speaker
Vadim Yanovskiy
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P1.1059.pdf
Estimations of disruption forces in the COMPASS Upgrade tokamak
V. Yanovskiy1, J. Havlicek1, M. Hron1, M. Komm1, E. Matveeva1,2, R. Panek1, J. Urban1
and the COMPASS team
1
Institute of plasma physics of the CAS, Prague, Czech Republic
2
Fac. Math & Phys., Charles University, V Holešovičkách 2, 180 00 Prague 8,
Czech Republic
This paper presents the analysis of disruptions in COMPASS Upgrade tokamak [1], which is
a medium-size high-magnetic-field device currently in the conceptual design phase. Due to
the high plasma current (up to 2 MA) and the strong magnetic field (up to 5 T), large
electromagnetic forces on conducting structures surrounding plasma are expected during
disruptions. To address this issue, electromagnetic loads on the vacuum vessel during
disruptions are estimated analytically using a novel approach to the problem [2]. These
analytical results will serve as a baseline for more detailed numerical calculations considering
a volumetric 3D description of conducing structures.
The uncertainties in the extrapolation of the available experimental data on disruptions to
new tokamaks point at a potential threat to their structural integrity [3]. Therefore, the
development of adequate protective means becomes a necessity. For that reason, the
possibility of implementation of a disruption force damper (DFD) [4] within the present
design constraints is considered.
The study reveals optimal choice of the vacuum vessel parameters which guarantee safe
operation of the COMPASS Upgrade tokamak.
[1] Panek R et al 2017 Fusion Eng. Des. 2017 123 11
[2] Pustovitov V D and Kiramov D I 2018 Plasma Phys. Control. Fusion in press
https://doi.org/10.1088/1361- 6587/aab056
[3] Hender T C et al 2007 Nucl. Fusion 47 S128–202
[4] Pustovitov V D, Rubinacci G and Villone F 2017 Nucl. Fusion 57 126038
