US Helium Reserve nearing depletion
Officials at the Federal Helium Reserve, the source of almost half of the US helium supply and more than a third of the world's, say that the reserve could exhaust its supply by 2020.
ADVERTISEMENT
Hints of Higgs boson detected at Tevatron, LHC
Scientists of the CDF and DZero collaborations at Fermilab continue to increase the sensitivity of their Tevatron experiments to the Higgs particle and narrow the range in which the particle seems to be hiding.
Meyer Tool Certified for European Union PED Welding
This past October, five members of the Meyer Tool & Mfg., Inc. weld department spent an intensive two days welding test coupons while under the observation of Todd Ward of the Hartford Steam Boiler Inspection and Insurance Company (HSBCT).
CSA, CEC/ICMC awards presented in Spokane
The CSA and CEC/ICMC awards were presented on Thursday, June 16, 2011, in Spokane at the Awards Banquet. More details and photos are available in the 2011 CEC/ICMC photo gallery and in the Summer issue of Cold Facts.
Advanced Magnet Lab awarded NASA contract for SC machine modeling
The Advanced Magnet Lab, Inc. (AML) has been awarded a three-year research contract from NASA for developing an experimentally validated, high fidelity, physics-based sizing model for high power superconducting machines, such as electrical generators and turbo-electric propulsion fans.
Fermilab researcher reflects on Tevatron’s retirement
At the end of September, Fermilab's famous particle collider the Tevatron will be retired after a dazzling career spanning four decades.
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...
Looking for the thermal conductivity of the high density polyethylene (HDPE) between 1.9 and 10K
I am looking for the thermal conductivity of the high density polyethylene (HDPE) between 1.9 and 10K (or even up to higher temperatures). The best would be to have these data for the HDPE material which sold by the CERN shop, which has a density of 0.95 g/cm3. Pier Paolo...
What is "Alpha" cryogenic processing?
Can somebody please tell me what the “Alpha Cryogenic Process” is? How is it different from ordinary cryogenic processing? Bernd Ahne, HiFi-Tuning
Do Stirling coolers have any relation to Stirling engines?
I was just wondering, do Stirling coolers have any relation to Stirling engines?
What type of MLI should be used in LOX (VJ) lines and flex hoses?
I work for ASRC Aerospace at the Kennedy Space Center (KSC). We support NASA in ground support equipment (GSE) design. I have a question concerning the type of multilayer insulation (MLI) to use in LOX vacuum Jacketed (VJ) lines and flex hoses.