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Gate valve and shutter control system of the fusion experiment Wendelstein 7-X |
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| Affiliation: | 1. Max Planck Institute for Plasma Physics, Wendelsteinstrasse 1, Greifswald, Germany;2. University of Freiberg, Freiberg, Germany;1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, China;2. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, Anhui, China;3. Department of Computer Science, Anhui Medical University, Hefei, Anhui, China;1. Pontificia Universidad Católica de Valparaíso, Av. Brasil 2147, Valparaíso, Chile;2. Departamento de Informática y Automática, UNED, 28040 Madrid, Spain;3. Asociación EURATOM/CIEMAT para Fusión, Avd. Complutense 22, 28040 Madrid, Spain;4. Departamento de Arquitectura de Computadores y Automática, Universidad Complutense de Madrid, 28040 Madrid, Spain;1. Japan Atomic Energy Agency, 2-166 Obuchi Rokkasho, Kitakami-gun, Aomori 039-3212, Japan;2. Fusion for Energy, Torres Diagonal Litoral, B3, 13/03, 08019 Barcelona, Spain;3. National Institute for Fusion Science and Project Leader of IFERC, 2-166 Obuchi, Rokkasho, Kamikita-gun, Aomori 039-3212, Japan |
| Abstract: | The plasma vessel of the fusion experiment Wendelstein 7-X (W7-X) is a plasma vessel covering a plasma volume of about 30 m3. The vacuum conditions for plasma experiments inside the plasma vessel are supposed to be in a range of 1 × 10?8 mbar (ultra high vacuum conditions) after evacuation and conditioning. The 254 ports of the plasma vessel allow an external access to the inner space of the plasma vessel. Ports for heating and diagnostic systems are equipped with gate valves or with shutters. The vacuum gate valves are used as a controllable mechanical and a vacuum disconnection point between diagnostics and heating systems on the port side and the inner plasma vessel on the other side. The shutters are responsible for an optical and thermal protection for port windows or installed equipments inside the ports. After an overview of the main requirements for the control of the huge number of gate valves and shutters for the operational phases 1 and 2 of W7-X the design and realization of a centralized control system for controlling and observing all shutters and the majority of gate valves of the machine Wendelstein 7-X will be introduced and discussed. |
| Keywords: | Control system Gate valve and shutter Plasma vessel |
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