System level design of the ITER bolometer port plug cameras

Abstract

The ITER bolometer diagnostic is planned to have 550 lines of sight (LOS) distributed all over the vessel. 240 channels are provided by cameras mounted in two Upper Ports and in one Equatorial Port. This paper describes the current status of the system level design of the port cameras and the solutions proposed on how to implement all required camera components while meeting a multitude of competing requirements. Sensor holders, support structures and different apertures depending on the camera type (pinhole or collimator), cable connectors, ceramic track plates and many mineral insulated cables have to be integrated within a restricted space envelope to guarantee functionality. The design of the internal electrical interfaces and the external mechanical mountings will be described as well. Using the example of an Upper Port camera with 60 LOS, the assembly of the camera components is explained and two currently discussed architecture options for the remote handling maintenance scheme in the hot cell are compared.

Final design of the ITER bolometer first plasma component: cable installation template

“…22 cameras are mounted directly to the Vacuum Vessel (VV) surface distributed on six different sectors (S01, S03, S04, S06, S08, S09) of ITER. The design principle of these different cameras has been shown previously in several publications: VV cameras [2], PP cameras [3] and divertor cameras [4]. This paper will present the final design of the first component of the ITER bolometer diagnostic of the VV cameras, the cable installation template (CIT) which is a First Plasma (FP) component.…”