Researchers discover mechanism behind superconductivity in pnictides
Researchers in Japan have discovered that a previously unknown and unexpected mechanism gives rise to superconductivity in specific types of materials.
ADVERTISEMENT
EADS debuts futuristic superconducting electric motor propulsion concept
EADS Innovation Works, the corporate research and technology network of EADS, is showcasing an all-electric propulsion system concept at the Paris Air Show in Le Bourget.
Fermilab director announces voluntary separation program
Pier Oddone, Director at Fermi National Accelerator Laboratory, announced on June 16 that the lab would begin a self-select voluntary separation program (SSVSP) in order to reduce staff by 100.
CSA Corporate Members win R&D awards
R&D Magazine recently announced its "R&D 100" winners for 2011. Several CSA Corporate Sustaining Members were among the winners: Argonne National Laboratory, Brooks Automation, Inc., Oak Ridge National Laboratory and Sierra Lobo. Read the list of winners on the R&D website.
NIST scientist details new method for making thinner, more flexible HTS cables
NIST scientist Danko van der Laan explains details of his invention of a method to make HTS cables that are thinner and more flexible than ever before. The superconducting material used to make the cables is a high-temperature superconducting "coated conductor" that consists of a 50-micron-thick Hastelloy substrate, coated with...
Tributes to Dr. Klaus Timmerhaus
Dr. Klaus D. Timmerhaus, who passed away February 11, 2011, was well-known in the cryogenics community for a number of accomplishments, including his involvement in the Cryogenic Engineering Conference and for serving as founding editor of the publication “Advances in Cryogenic Engineering,” which he edited from 1954 to 1980.
ADVERTISEMENT
Joule-Thomson Effect
The Joule-Thomson (JT) effect is a thermodynamic process that occurs when a fluid expands from high pressure to low pressure at constant enthalpy (an isenthalpic process). Such a process can be approximated in the real world by expanding a fluid from high pressure to low pressure across a valve. Under...
Current Leads
One of the challenges of using superconducting magnets is the connection of the magnet to a room temperature power supply. This is accomplished via current leads. The trick is that current leads should ideally have a low heat leak, since they connect room temperature to cryogenic temperature, while at the...
Multilayer Insulation
Multilayer insulation (also referred to as superinsulation) is a key component in the reduction of heat leak to cryogenic systems due to thermal radiation. MLI consists of a series of uncooled reflective surfaces placed in the vacuum space between two surfaces, one warmer than the other. Generally speaking, for ideal...
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...
Where can the cryogenic insulator trade be studied?
I have been searching for information regarding the training of cryogenic insulators and have not been able to find any information in North America.
Material Selection and Testing For the Magnet Wire
I am looking for some help in material selection for the magnet wire (CDA101 oxygen-free copper, phosphor bronze, beryllium copper, others?) and insulation materials. Also, what testing is required to establish the RRR for any particular wire?
Density and/or elasticity at temps from 170 K down to 70 K
I have been searching [unsuccessfully] for data on both the elasticity and density figures for 316 st/steel at low temperatures.
Aluminum-stainless steel transitions
I am looking for a Al-SS transition pieces that will allow welding between aluminum and stainless steel tubes. Do you know a supplier of these transitions?