5-9 September 2016
Prague Congress Centre
Europe/Prague timezone

P3.013 Overview and status of construction of ST40

7 Sep 2016, 11:00
1h 20m
Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Foyer 2A (2nd floor), 3A (3rd floor)

Prague Congress Centre

5. května 65, Prague, Czech Republic
Board: 13
Poster A. Experimental Fusion Devices and Supporting Facilities P3 Poster session

Speaker

Mikhail Gryaznevich (Tokamak Energy Ltd)

Description

Recent advances in the development of high temperature superconductors (HTS) [1], and encouraging results on a strong favourable dependence of electron transport on higher toroidal field (TF) in Spherical Tokamaks (ST) [2], open new prospects for a high field ST as a compact fusion reactor or a powerful neutron source [3]. The combination of the high beta (ratio of the plasma pressure to magnetic pressure), which has been achieved in STs, and the high TF that can be produced by HTS TF magnets opens a path to lower-volume fusion devices, in accordance with the fusion power scaling proportional to beta22Bt44Vol. The new generation high field spherical tokamak ST40 (R0=0.5-0.7m, A=1.7-2.0, Ipl=2MA, Bt=3T, k=2.5) is under construction by Tokamak Energy Ltd, UK, with the first plasma expected in 2016. Overview of the ST40 project will be presented. Main objectives of the project, parameters of the tokamak, physics programme issues will be described and physics and engineering challenges (mainly connected with the high toroidal field and high wall and divertor power loads) of this device will be discussed. The device is aimed to demonstrate burning plasma parameters (nTtauE) with a possibility of DT operations. The present status of the construction will be reported. The demonstrate on of reliable operations of a compact high field ST, with the toroidal field up to 5 times higher than in presently operating STs, will significantly advance ST research. ST40 will be a step in the commercial exploitation of Fusion for the development of the Fusion Energy. [1] M GRYAZNEVICH et al., Fusion Eng. and Design, 88 (2013) 1593. [2] M. VALOVIC et al., Nuclear Fusion, 49 (2009) 075016. [3] M GRYAZNEVICH et al,. Fusion Science and Technology 61 (2012) 89

Co-author

Mikhail Gryaznevich (Tokamak Energy Ltd, Culham Science Centre, Abingdon, OX143DB, United Kingdom)

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