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Help Us Celebrate Women in Cryogenics and Superconductivity

We're looking for input for our February issue of Cold Facts. Participants are invited to answer the questions posted below and send their answers to Brian Dudley, Cold Facts Editor, editor@cryogenicsociety.org, by January 27.

CERN Ramps Up Neutrino Program

In the midst of the verdant French countryside looms a workshop the size of an aircraft hangar. Inside, CERN technicians are busy constructing two 8-meter tall cubes to test prototype detectors for the Deep Underground Neutrino Experiment (DUNE). Each will in time contain 770 metric tons of liquid argon permeated...

NIST Physicists Squeeze Light, Cool Microscopic Drum below Quantum Limit

Physicists at the National Institute of Standards and Technology (NIST) have cooled a microscopic mechanical drum to less than one-fifth of a single quantum, or packet of energy. The result, according to the research team, is lower than ordinarily predicted by quantum physics and the technique used could theoretically cool...

Ultracold Liquid Hydrogen May Be Fuel of the Future

NASA has wrapped up testing on a new cooling system that supercools hydrogen to -423°F. It's housed in a shuttle-era storage facility engineers saved from demolition five years ago at the agency’s Kennedy Space Center in Florida and thereafter transformed into a test site for new ground operations demo units.

Woman Gives Birth from Ovary Frozen in Childhood

The first woman to have an ovary frozen before the onset of puberty has given birth to a baby boy. As a nine-year-old child, Moaza Al Matrooshi, now 24, suffered from a severe blood disorder, beta-thalassemia, and needed chemotherapy in preparation for a bone marrow transplant to treat the condition....

New Method Increases Precision of Atom Interferometry

In a paper published in Physical Review Letters, a research team from the MIT-Harvard Center for Ultracold Atoms presents a method to increase the precision of atom interferometry with Bose-Einstein condensates, a result, the group says, that eliminates a source of error endemic to earlier designs. Interferometers using the new...

Latest in Defining Cryogenics

Dewar

A dewar is a type of cryostat named after Sir James Dewar, the researcher who first developed the concept of a vacuum insulated container with silvered walls to reflect thermal radiation. Dewar was the first to liquefy hydrogen, and he created the device to store his discovery. The thermos bottle...

Stirling and Gifford-McMahon Cryocoolers

Stirling and Gifford-McMahon (GM) cryocoolers are two of the most commonly used cryocoolers in cryogenics. Both devices have a significant industrial base and operate at a wide range of temperatures and capacities. The thermodynamic cycles for both of these cryocoolers are quite similar. The Stirling cycle consists of a compressor,...

Liquefied Natural Gas (LNG)

A significant commercial application of cryogenics is the liquefaction, transport and storage of natural gas. Liquefied Natural Gas (LNG) is generally 95 percent methane with a few percent ethane and much lower concentrations of propane and butane. LNG liquefies at 111.6 K. Unlike many applications of cryogenics, the motivation for...

Latest in Cryo Central

Primary Standards

Elie K. Track Hypres, Inc. elie@hypres.com http://www.hypres.com/ Primary standards involve the exact definition and realization of units of measurement for various quantities, time, length, mass, voltage, resistance, current, etc. International agreements based on the latest scientific knowledge define those units, and their realizations vary depending on the unit itself. For...

Shrink Fitting

Robin A. Rhodes Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Shrink fitting, (or “compression fitting” as it is sometimes called), is a method used to insert a pin or bushing into a housing or other assembly requiring an extremely tight tolerance fit. It can be used as an alternative to...

Telecommunications

From the Winter 2004 issue of Cold Facts magazine The recent M-Calc IV — 4th Industry Assessment workshop discussing military and commercial applications for low-cost cryocoolers, held in November in San Diego, highlighted progress being made in cryogenics as applied in telecommunications. The reliability and long lifetime of projects now...

Wind Tunnels

Dr. Robert Kilgore The development of the cryogenic wind tunnel is one of many significant breakthroughs in both cryogenics and wind-tunnel technology made during the past millennium. Interest in the development of high-speed commercial and military aircraft resulted in a review of problems of flow simulation in transonic wind tunnels...

Latest in Ask the Experts

Suppliers of regenerator materials

I was looking for suppliers of regenerator materials. Can you please provide a list of vendors for: • Lead spheres • Bronze screen discs • Rare earth materials and spheres Thank you in advance for any help you can provide.

Containing ice accumulation while recovering helium

We are implementing a system to recover helium from our Janis ST-500 continuous flow LHe cryostat. The recovery system uses standard 1/4″ plastic tubing, which we connect directly to the cryostat’s exhaust port. The problem with this setup is that the gas is still quite cold as it leaves the...

Looking for some advice regarding cryogenic modeling in ANSYS FEA software

I am looking for some advice regarding cryogenic modeling in ANSYS FEA software. I have been trying to use the Transient Thermal module, in workbench 14.5, to model the cooling of a device in a dilution fridge. I have approximate values for the cooling power of each plate in the...

Compensators and/or accumulators: Are they used in cryogenics?

Are compensators and/or accumulators, high or low pressure, used in cryogenics? Are they used in space?

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