Abstract
The operational requirement of Steady State Superconducting Tokamak (SST-1) Current Feeder System (CFS) and 80 K thermal shield demands large number of parameters to be measured and monitored. The parameter includes the temperature, pressure, liquid level, fluid flow and voltage across different current carrying components of SST-1. In refurbished SST-1 CFS which is equipped with (+/-) 10 pairs of conventional vapor cooled current leads (VCCL), superconducting (SC) feeders, actively cooled LN2 shield etc. All these components are installed with suitable and sufficient instrumentation and diagnostics. Similarly, 80 K thermal shield of SST-1, also need a large number of temperature sensors to monitor the temperature profile of the shield. We have carried out the online measurement and monitoring of these parameters to smoothen the operation of both the above systems during the recent commissioning of SST-1. This paper describes the details of instrumentation and data acquisition systems of the current feeder and 80 K thermal shield.
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