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Report on 23rd International Conference on Magnet Technology (MT-23)

The twenty-third International Conference on Magnet Technology (MT-23) was held in Boston at the Westin Copley Hotel from July 14 through July 19. Dr. Bruce Strauss was the General Chairman of the conference; Joe Minervini of MIT served as the Program Chair; Larry Masur of Bruker was the Exhibits Chair;...

Professor John Clem dies August 2

Professor John Clem passed away on August 2, 2013, after a four-year battle with mesothelioma. He was known as the "father of the 2 dimensional pancake vortex."

ILC candidate site in Japan announced

The International Linear Collider (ILC) site evaluation committee of Japan announced the result of assessment of two candidate sites in Japan in a press conference held at the University of Tokyo on August 23, 2013. They recommended the Kitakami mountains in the Iwate and Miyagi prefectures as a location.

Taylor-Wharton releases next generation of MicroBulk storage

Taylor-Wharton Cryogenics LCC has introduced a new generation of MicroBulk storage tanks. This new family of MicroBulk cryogenic storage vessels uses the latest cold stretch manufacturing technology with improved updated features and capabilities, addressing the efficient storage and dispensing needs of industrial, health care, laboratories and food production businesses engaged...

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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...

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...

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...