Conceptual design and development of upgraded electronics for bolometer diagnostic

Bolometer diagnostic is used to measure the total radiated power from Plasma in Tokamak. In Aditya-U tokamak two pin hole camera of absolute extreme ultraviolet photodiodes (AXUVD) array containing 20 elements are installed on Top and radial port. Apart from that 4 single AXUV diodes are also installed on different position of the tokamak. Signal conditioning system and indigenously developed Data acquisition systems for bolometer diagnostic installed in Aditya tokamak are in operation and continuously providing good data during experiments. In Aditya upgrade some modifications have been implemented like inclusion of Data acquisition in same rack, interfacing of detector and front-end electronics is improved for easy handling, testing and troubleshooting. Now our main aim is to make the whole bolometer diagnostic electronics very compact and portable. The present signal conditioning system includes part -1 and part-2. All present Bolometer instrumentation as per the Aditya upgrade requirement consumes two racks space. Upgraded bolometer electronics with data acquisition will reduce this space to half of the rack. The restriction of 16 channel of present system will be removed. Individual channel parameter setting will be implemented which was restricted to 4 channel with same parameter. The poster includes detailed conceptual design and features of upgraded bolometer electronics. (author)