ITER upper visible/infrared wide angle viewing system: I&C design and prototyping status

Abstract The ITER Upper Visible/Infrared Wide Angle Viewing System is a key diagnostic system for divertor surface temperature monitoring and heat load calculation during plasma operation. This system will be installed after the first plasma phase in five upper ports with front-end optics under vacuum, relay optics in the interspace, back-end optics and sensors in the port-cells, and data acquisition and processing units in the Diagnostic building. The system is currently in the Preliminary Design phase which includes some prototyping activities. This paper describes the current design status of the plant system Instrumentation and Control (I&C) comprising camera pre-selection, hardware, and software architecture for camera data acquisition and image processing. The proposed design has been elaborated by following the ITER CODAC methodology for Plant System I&C design. On-going prototyping activities addressing identified R&D challenges such as camera high throughput data acquisition and real-time image processing are also presented.