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SST-1 MAGNET GROUP

Group Leader: SUBRATA PRADHAN(pradhan at ipr.res.in)
Members of the Group

Main Objective

Magnet Group is involved in the design, developement and validation tests of large volume high field superconducting and resistive magnets aimed at Tokamak and laboratory applications. The group is also actively engaged in developing various associated technologies required for large size modern magnets. Developemnt of various kinds of state-of-the-art sensors and diagnostics required for superconducting magnets as well as developement of VME based data acquisition and control systems have been the other prime objectives of the group.

Current Activities

Assembly and Integration of the SST-1 magnets with other subsystems of Steady State Tokamak (SST-1)
In-house fabrication of the Joints in the SST-1 Superconducting Magnets
Developement of VxWorks based Application Program for VME system
Developement of Quench Detection system for SST-1 Magnets

Special Equipments

VME based Data Acquisition system
PC based Data Acquisition system

Major achievements of the group

Design of a high Jc, fine multifilamentary superconducting strands with multiply connected stabilizing regions and high stabilizer to superconductor ratio strands for both DC and AC applications in Tokamak magnets. Industrial validation of the designed novel strand on large piece lengths together with M/s Hitachi Cable, Ltd; Japan Design of a state-of-the-art Cable-in-Conduit (CIC) Conductor for Steady State Superconducting Tokamak (SST-1) Toroidal and Poloidal Magnet System. Design, manufacturing and validation of the designed SST-1 CICC on a medium size Model Coil with experimentally simulated SST-1 plasma scenarios at Kurchatov Institute, Moscow, Russia. Manufacturing of over 16 km of SST-1 CICC with strict quality control in association with the M/s Hitachi Cable, Ltd. Developing the winding technology for large size superconducting magnets in association with M/s Bharat Heavy Electricals Limited, Bhopal. Developement of a novel cryo-compatible insulation system used both as magnet insulation and compatible to vacuum pressure impregnation of large size superconducting winding pack in association with the Centre of Insulation Technology, BHEL, Bhopal. Completion of the manufacturing of the entire SST-1 magnet system involving 17 Toroidal Superconducting Magnets, 9 superconducting Poloidal Field Magnets and 7 resistive magnets. In-house developement and validation of low resistive joints involving CICC. Developement of Quench detection system for SST-1 Superconducting Magnet system. Developement of Data Acquisition System for SST-1 Magnet system.

Recent publications of the group can be found here