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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Mixed Refrigerant Cycles
Most cryogenic refrigeration systems, both large scale systems and cryocoolers, use helium as a working fluid. There are a number of advantages to helium, not the least of which is that helium remains a fluid down to the lowest achievable temperatures. In order to freeze helium, pressures of over 20...
Fountain Pumps and He II Phase Separators
Helium II (He II), the second liquid phase of the 4He isotope described in this column in Cold Facts Spring 2010 (http://2csa.us/he2), can be modeled as consisting of two interpenetrating fluids. One, the superfluid component, has zero viscosity and entropy and the other, the normal fluid component, has nonzero viscosity...
Turboexpanders
A vital technology in the refrigerators and liquefiers described in Cold Facts Volume 31 Number 3 is that of turboexpanders. These devices are rotating machines in which the process fluid (e.g., helium) does work against the turboexpander while moving from high pressure to a lower pressure and thus is cooled....
Air Separation and Liquefaction
by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...
Bose-Einstein Condensate
A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...
Cold Technology for Pest Control
While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...
Cryogenic Finishing
The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...
Seeking alloy that keeps elastic property down to 10K
I am looking for a metal (alloy) that supports high temperatures (at least 1600K) and keeps its elastic property at low temperatures down to 10K. Rhenium is a good one because it does not become brittle. But it is quite expensive. Pure tungsten and molybdenum enter in the brittle regime...
Searching for a freezer that does not need electricity
I’m student of University of Barcelona. We do technical cryogenic research and we are searching for a cryogenic portable freezer that does not need electricity. We can’t find any company that offers something like this. The product we are looking for is the typical portable freezer for food or drinks...
FEP Encapsulated O rings in the cryogenic process
Can you please advise if FEP Encapsulated O rings are used within the cryogenic process and what materials? I have been asked by my company to write about FEP Encapsulated O rings for a training seminar.
Need material property data for polycrystalline / sintered ceramics
I am a ME grad student currently working on the design of a detector array / focal plate of a scientific space instrument operating at a temperature of about -80…-100°C. Although this is not in the cryogenic temperature range, I would like to address two questions to you as the...