期刊
FUSION ENGINEERING AND DESIGN
卷 96-97, 期 -, 页码 808-811出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2015.02.067
关键词
Overview video diagnostics; W7-X; Stellarator; Event Detection Intelligent Camera
Considering the requirements of the newly built Wendelstein 7-X stellarator a ten-channel overview video diagnostic system was developed and is presently under installation. The system covering the whole torus interior can be used not only to observe the plasma but also to detect irregular operational events which are dangerous for the stellarator itself and to send automatic warning for the machine safety. The ten tangential AEQ ports used by the diagnostic remain under atmospheric pressure, the vacuum/air interface is at the front window located at the plasma side of the AEQ port. The optical vacuum window is protected by a cooled pinhole. The Sensor Module (SM) of the intelligent camera (EDICAM) developed especially for this purpose is located directly behind the vacuum window. EDICAM is designed to simultaneously record several regions of interest of its CMOS sensor with different frame rate and to detect various predefined events in real time. The air cooled SM is fixed by a docking mechanism which can preserve the pointing of the view. EDICAM can withstand the magnetic field (similar to 3 T), the neutron and gamma fluxes expected in the AEQ port. In order to adopt the new features of the video diagnostics system both control and data acquisition and visualization and data processing softwares are developed. (C) 2015 EURATOM. Published by Elsevier B.V. All rights reserved.
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