Phase I of MicroBooNE installation at LArTF continues
Phase 1 installation of the MicroBooNE experiment at the Liquid Argon Test Facility at Fermi National Accelerator Laboratory has made very good progress over the summer.
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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...
Col. Gregory H. Johnson named CASIS Executive Director
Gregory H. Johnson, Colonel (Ret), has been named executive director for the Center for the Advancement of Science in Space (CASIS), the nonprofit entity selected by NASA to manage the utilization of the International Space Station (ISS) US National Laboratory. Col. Johnson will assume his role on September 1, 2013.
Laboratory LN2 Supply Systems: Options, Sizing and Safety
The growth of storing and preserving biological materials in cryogenic liquid nitrogen freezers has resulted in many options and challenges in how to effectively supply these systems with the cryogenic liquid they require. Evaluating options, sizing and safety considerations is critical to determining the path a university laboratory or research...
ASTA generates broad interest at users’ meeting
A crowd of researchers from government labs, academia and industry gathered at Fermilab July 23-24 for the first-ever users' meeting for the Advanced Superconducting Test Accelerator, which produced its first electrons in late June. The primary goal of ASTA is to provide a home for accelerator R&D, specifically in the...
Scientists Discover Hidden Magnetic Waves in High-Temperature Superconductors
Scientists at the US Department of Energy's (DOE) Brookhaven National Laboratory and other collaborating institutions have discovered a surprising twist in the magnetic properties of high-temperature superconductors (HTS), challenging some of the leading theories. In a new study, published online in the journal Nature Materials on August 4, scientists found...
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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...
History of Cryogenics
From the Fall 1999 issue of Cold Facts magazine Millennium Breakthroughs A variety of CSA members give different perspectives on the past millennium: What were the most significant breakthroughs in cryogenics during the past millennium? Prof. R.G. Scurlock, Kryos Technology, scurlock@soton.ac.uk (“Breakthrough” = way through obstacles — Oxford English Dictionary)...
Cryobiology
Andreas Sputtek Past President Society for Cryobiology sputtek@uke.uni-hamburg.de or http://www.sputtek.de/. The word cryobiology (from the Greek words “cryo” = cold, “bios” = life, and “logos” = science) literally signifies the science of life at low temperatures. In practice, this field comprises the study of any biological material or system (e.g.,...
Cryogenic Insulation
James E. Fesmire Cryogenics Test Laboratory NASA Kennedy Space Center james.e.fesmire@nasa.gov Introduction In today’s world, the use of cryogenics and low-temperature refrigeration is taking a more and more significant role. From the food industry, transportation, energy, and medical applications to the Space Shuttle, cryogenic liquids must be stored, handled, and...
Cryogenic Treatment of Materials
F.J. Diekman Controlled Thermal Processing, Inc. info@metal-wear.com Cryogenic Processing (also called cryogenic treatment, and incorrectly “cryogenic tempering”) is a process that uses cryogenic temperatures to modify materials to enhance their performance. Cryogenic Processing involves the slow reduction in temperature of the material to at least -300°F (-185°C) and holding the...
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...
Separated layers of ice over a pipe
I want to know that why there are different layers of ice over a pipe carrying a cryogenic fluid, each layer separated with clear marks / lines? What do these layers signify?