External users: registration to be carried out only through I-STEM portal
Additional information about sample and analysis details should be filled in the pdf form provided in the I-STEM portal under “DOWNLOAD CSRF”
Internal users (IITB): registration to be carried out only through DRONA portal
Additional information about sample and analysis details should be filled in the pdf form provided here.
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Category
- Services » Service
Booking Details
Facility Management Team and Location
Facility Features, Working Principle and Specifications
Features:
Produces liquid helium from helium gas.
Liquid helium can be used for cooling down to 2 K.
Working Principle :
J-T principle: A compressed gas when allowed to expand get cooled. If the same cycle is repeated, then the gas can be cooled down below its liquefaction temperature. In this plant, the helium gas is compressed to high pressure of ~230 psi and allowed to expand in the cold box. With proper heat exchangers and valves, the helium gas finally cools below 4.2 K and gets liquefied. This liquid is collected in a separate container (helium dewar) for storage and transfer.
Some technical specifications:
- 14 litres per hour in pure gas mode
- 30-40 litres per hour with liquid nitrogen pre-cooling
Sample Preparation, User Instructions and Precautionary Measures
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Charges for Analytical Services in Different Categories
Applications
The liquid helium produced can be used for cooling purposes down to 2K for doing various experiments at low temperatures. Liquid helium can also be used for cooling superconducting magnets such as the ones used in NMR machines, MRI machines, etc.
Sample Details
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SOP, Lab Policies and Other Details
Publications
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