About Us

Low Temperature Facility of Tata Institute of Fundamental Research, (TIFR) Mumbai meets the requirement of two cryogenic fluids - liquid helium and liquid nitrogen along with other support services to various facilities and laboratories of the institute such as, Condensed Matter Physics and Materials Science (DCMP & MS), Nuclear and Atomic Physics (DNAP), Biological Sciences (DBS), Astronomy and Astrophysics (DAA), and Chemical Sciences (DCS).
Low Temperature Facility (LTF) was started in 1961 with liquefaction of helium and then a liquid nitrogen generator was added in 1968. LTF operates and maintains the 1610 KOCH make helium liquefier and LINIT-25, liquid nitrogen generator. To meet the enhanced liquid helium demand, LTF recently installed Linde make, L-280 Helium liquefier along with the state of the art liquid helium transfer pump system. The above new L280 helium liquefier was commissioned in the month of May 2008 and is in regular operation till date.
Besides the main cryogenic plants, LTF operates and maintains many other auxiliary equipment such as: Helium feed gas compressors, Helium recovery gas compressors, Cryogenic dewars (more than 75 dewars), High pressure cylinders (about 1000 cylinders packed in 19 Quads), Mass Spectrometer Leak Detector (MSLD), Gas analyzers, Gas flow meters etc.
Instrument facilities of the institute that are supported by the cryogen from LTF are: National NMR Facility (three NMR spectrometers - 800 MHz, 600 MHz and 500 MHz), DCMPMS Facilities: three SQUID magnetometers, two Physical Property Measurement systems (PPMS) and a VSM magnetometer. The above facilities are at kept cold continuously at liquid helium temperatures.The following laboratories are major users of liquid helium: Dilution milli-Kelvin refrigerator, Adiabatic de-magnetization milli-Kelvin refrigerator, Tunneling Point Spectroscopy, Point Contact Spectroscopy and Photo Electron Spectroscopy. In addition, about 12 other experiments also make use of liquid helium and liquid nitrogen.
After the use of liquid helium at various laboratories in the institute, the evaporated helium gas is recovered back for re-liquefaction. The Institute has a large network of recovery lines extending to various laboratories buildings of the Institute.LTF's helium recovery system handles a large quantity of boil-off helium gas sent by various laboratories through the above recovery network, with about 85% of helium gas recovery and re-liquefaction after compressing with the high pressure helium compressors & purifying.
All the cryogen-demands are being met on demand. For enhanced user convenience, 'on-line cryogens' requests and interfacing has been implemented for liquid helium, nitrogen. To meet the above demands LOW TEMPERATURE FACILITY works in round the clock operation. LTF also provides the service of Mass Spectrometer helium Leak Detector (MSLD) to the institute users.