Search results for: liquid helium

NIDDK / LIQUID HELIUM Solicitation ID/Procurement Identifier: 75N94024Q00049 Ultimate Completion Date: Mon Feb 24 18:00:00 GMT 2025

Provide the necessary personnel, material, equipment, services, and facilities to supply Liquid Helium (LHe) in 100 and 250 litercontractor-owned dewars, on an as-needed basis for the NIST Boulder campus, in accordance with the Statement of Work.See attached solicitation.

KENNEDY SPACE CENTER LIQUID HELIUM PURCHASE AND THE LEASE OF SIX LIQUID HELIUM PUMPS. Solicitation ID/Procurement Identifier: 80KSC023DA010 Ultimate Completion Date: Sun Oct 31 17:00:00 GMT 2027

Energizing to superconductivity requires the magnet to be cooled to 4 K, which is only achieved and maintained through the use of cryogenic liquids, specifically liquid helium and liquid nitrogen. As such, the ACC requires liquid helium to be used in the magnetization of the NMR instruments in B1 and CLL Labs.

Energizing to superconductivity requires the magnet to be cooled to 4 K, which is only achieved and maintained through the use of cryogenic liquids, specifically liquid helium and liquid nitrogen. As such, the ACC requires liquid helium to be used in the magnetization of the NMR instruments in B1 and CLL Labs.

Liquid helium is used to cool NMR superconducting magnets, and also used for low-temperature experiments in several laboratories within the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), at the main campus of the National Institutes of Health (NIH), in Bethesda, MD 20892. 

The magnets are the center components of 18 NMR spectrometers, representing a total purchase value of ca 18 million US$, and are kept at ultra-low temperature (4.2 K) to maintain their superconducting properties. Failing to periodically refill the magnet with liquid helium will return in quenching the system, which can irreversibly damage the magnets.