Design and Engineering Investigation of Cryostat For Low Temprature Application

Abstract

The Magnet System Division which is a part of Institute Of Plasma Research is improvising the design of various superconducting magnets and super conducting strands. This strands are used in measuring the consumption of cryogen liquid i.e. LN2 and LHe. Magnet System Division has legion of cryostat in its test facility to test the super conducting magnets and super conducting materials. For testing the consumption of each cryostat should be known thus to improve its performance by decreasing its consumption and thermal load imposed by the superconducting magnet or material upon the cryogen liquid. This can be carried out with the help of some design estimation and some modification in cryostat. The analysis is carried out in commercially available ANSYS software by inputting appropriate materials properties and condition parameters. The basic analytic calculation have been carried out for estimating the total heat load and consumption of the LHe by the cryostat. Estimation of heat flux in cryostat is carried out through simulation in ‘steady state thermal analysis’ module in commercially available ANSYS software. Optimization has been carried out keeping in mind the FEA and analytical results. The target to reduce the consumption of LHe by 80% was done by altering the design of some parts post analysis of the Gyrotron. The design alteration was performed keeping in mind the weight and various mechanical parameters without altering the dimensions of magnet. The alteration in design of those parts were done who contributed more to the heat load and thus increasing the consumption. On the basis of the analytic results the FEA of Gyrotron cryostat has been accomplished with proper mesh sensitivity.