Cryogenic Plant & Distribution System (CPDS) of SST-1 Cryogenics Division facilitates the cool-down of the superconducting magnets to 4.5K and thermal shields to 80K respectively for SST-1 plasma experiments. The section has developed vapour cooled conventional superconducting current leads of 10 kA rating, cryo-lines with multiple process pipes, temperature transmitter for cryogenic sensors, electrical insulation breaks, cryogenic vacuum barriers & dissimilar material joints, etc. The section has experimental facility to test the superconducting current leads of low-temperature superconductor (LTS) & high-temperature superconductor (HTS), superconducting coils and cryogenic temperature calibration etc. CPDS Section has following sub-systems.
a) Helium Refrigerator cum Liquefier (HRL) of 1.3 kW at 4.5K
1) Compressor Station housing 3 nos. of screw compressors
2) Oil Removal System
3) On-line Purifier
4) Coldbox with Main Control Dewar
b) Integrated Flow Distribution & Control System (IFDCS)
c) Superconducting Current Feeder System (CFS)
d) Warm Gas Management (WGM) with Helium recovery system
Comprises 4 nos. of medium pressure storage vessels for pure Helium gas & 2 nos. of high pressure storage vessels for impure Helium gas.
e) Liquid Nitrogen (LN2) Management & Distribution System
f) 80K Liquid Nitrogen (LN2) Booster System & Valve Box
g) 12 kA, 16 VDC Programmable Power Supply
