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Women in Cryogenics and Superconductivity 2020

CSA celebrates women in cryogenics and superconductivity. In this feature, seven women in positions across the industry discuss current projects, how they entered the field and their thoughts on attracting more women to the profession.

Honeywell Announces Development of Record-Setting Quantum Computer

Honeywell Quantum Solutions, a division of Honeywell International, Inc., has announced the development of an unprecedented quantum computing system. Slated for a mid-2020 release, the company says its quantum system has doubled the quantum volume of the next fastest system at QV (Quantum volume) 64. The system is the first...

MR Solutions Makes Imaging More Accessible outside Clinical Health Applications

MR Solutions, a Guildford, UK-based manufacturer, produces superconducting, cryogen-free, “benchtop” magnetic resonance imaging (MRI) systems. The company, founded by Dr. David Taylor in 1999, specializes in machines built for use outside traditional healthcare applications and has developed a range of preclinical imaging systems with innumerable applications. In the past, this...

Energy Gap Modulations Observed in a Cuprate Superconductor

A team studying high temperature superconductors at the US Department of Energy’s Brookhaven National Laboratory has discovered definitive evidence for the existence of a state of matter known as a pair density wave, first predicted by theorists some 50 years ago. Their results, published in the journal Nature on April...

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Regenerators

Regenerators or regenerative heat exchangers are a key component of cryocoolers such as pulse tube cryocoolers (Cold Facts, August 2014). Regenerator performance greatly affects the coefficient of performance of cryocoolers. Improvements in regenerator design and, in particular, regenerator materials have been an important factor in the improvement of the performance...

Pulse Tube Cryocoolers

The development of pulse tube cryocoolers has been a significant topic of research and development over the past 20 or so years. Pulse tube cryocoolers have a number of advantages over other types of cryocoolers and are now available commercially. In order to understand pulse tube cryocoolers, it’s best to...

Thermal Expansion

Thermal expansion refers to the change in size (length or volume) that a material undergoes as its temperature changes. In cryogenic systems this effect can be quite large and must be allowed for in the design. In isotropic materials, which include most engineering materials, the thermal expansion is the same...

Food Processing

Cryogenics and Food The industrial gas industry provides a host of products and services related to food. The various gases have useful and sometimes fascinating applications in food industry. “The food industry is not a homogenous industry. The needs of customers processing hamburger vs. poultry vs. strawberries vs. seafood, for...

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...

An Issue of Pressure and Flow Rate in a Supply Tank

Please help solve this problem: A supply tank requires a vaporizer to generate sufficient pressure to pump stored fluid up into a vehicle or tank. The available head is limited as the tank level falls and it is important to minimize the system pressure drop to maintain the desired flow...

Using MLI on VJ Line Joints or Cryo Storage Tanks

When installing Multi Layer Insulation (MLI) blankets on VJ line joints or cryo storage tanks should they be wrapped and tied down tight or loose? These are usually pre-cut to size. Also should they have an access hole at the point of where the molecular sieve is installed to help...