16 research outputs found
Operating a full tungsten actively cooled tokamak: overview of WEST first phase of operation
WEST is an MA class superconducting, actively cooled, full tungsten (W) tokamak, designed to operate in long pulses up to 1000 s. In support of ITER operation and DEMO conceptual activities, key missions of WEST are: (i) qualification of high heat flux plasma-facing components in integrating both technological and physics aspects in relevant heat and particle exhaust conditions, particularly for the tungsten monoblocks foreseen in ITER divertor; (ii) integrated steady-state operation at high confinement, with a focus on power exhaust issues. During the phase 1 of operation (2017–2020), a set of actively cooled ITER-grade plasma facing unit prototypes was integrated into the inertially cooled W coated startup lower divertor. Up to 8.8 MW of RF power has been coupled to the plasma and divertor heat flux of up to 6 MW m−2 were reached. Long pulse operation was started, using the upper actively cooled divertor, with a discharge of about 1 min achieved. This paper gives an overview of the results achieved in phase 1. Perspectives for phase 2, operating with the full capability of the device with the complete ITER-grade actively cooled lower divertor, are also described
SXR GEM diagnostic integration at WEST
GEM stands for Gas Electron Multiplier : the principle is to ionize photons in the soft XRays and to generate an electric charge. Because this charge is relative to the photon energy, it helps determines the origin of the soft X-Rays. For WEST’s tokamak, this allows to ensure that machine is not being damaged
The WEST plasma control system: Integration, commissioning and operation on the first experimental campaigns
The WEST plasma control system: Integration, commissioning and operation on first experimental campaigns
The Information Technology tools for remote participation and remote experiment control of WEST
International audienceWEST is a full metallic environment tokamak, with an X-point divertorconfiguration. It is targeted at testing ITER like divertor prototypes made ofactively cooled bulk tungsten units, in tokamak conditions during long pulseoperation. The experimental program is conducted with the participation of the WESTpartners from various institutions around the world. We have implementedseveral IT tools to share data and information with all users. They are used sincethe C1 campaign, two years ago. A brief description of these tools and theperspectives for further developmen