NASA Plum Brook builds world’s largest vacuum chamber
The world's largest vacuum chamber has been built by NASA Plum Brook.
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W. Vincent Liu wins Outstanding Young Researcher Award
W. Vincent Liu, Assistant Professor of Physics and Astronomy at the University of Pittsburgh, is the winner of the 2007 Outstanding Young Researcher Award of the Overseas Chinese Physics Association.
Dr. Steven Van Sciver named CSA fellow
Dr. Steven Van Sciver, the John Gorrie Professor of Mechanical Engineering at the Florida A&M University-Florida State University College of Engineering and a founding member of the National High Magnetic Field Laboratory, became just the fifth member of the Cryogenic Society of America to be named a fellow.
Larbalestier receives Lifetime Achievement Award
Dr. David Larbalestier, Director of Florida State University's Applied Superconductivity Center, received the Lifetime Achievement Award from the International Cryogenic Materials Conference (ICMC) on July 17 in Chattanooga.
Dr. Lucio Rossi receives IEEE Council on Superconductivity Award
The prestigious IEEE Council on Superconductivity award for continuing and significant contributions in the field of applied superconductivity was awarded to Dr. Lucio Rossi of CERN for his "significant and sustained contributions" on large scale applications.
Art Francis, long-time CSA member, dies
We are sorry to report the death of Art Francis, an expert in Helium, and long-time member of the Cryogenic Society of America.
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Stability
Stability refers to the ability of a device employing superconductors to remain in its superconducting state after part of the superconductor transitions back to its normal conducting state due to a disturbance. While the concept can apply to many superconducting devices—transmission lines, generators, motors, etc.—it is most commonly considered in...
Cable-in-Conduit Conductors
Cable-in-Conduit Conductors (CICC) are a common form of superconducting cable used in large-scale applications. There are several varieties of CICCs, but they all consist of many small, stabilized superconducting wires contained within a conduit through which a coolant (typically supercritical He II) flows. Figure 1 shows the cross section of...
Bayonet Coupling
A bayonet coupling is a demountable joint that allows for quick and easy connection and disconnection of cryogenic components, including transfer lines, cryostats, liquefiers and refrigerators. Bayonets provide a number of advantages, chief among them the ability to connect and disconnect the bayonets while components they connect are still at...
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...
Cryogenics in Space
Peter Kittel University of California-Berkeley pkittel@cal.berkeley.edu Space Cryogenics is the application of cryogenics to space missions. These applications fall into two broad areas, supporting space science missions and supporting the space transportation infrastructure. Science applications: The atmosphere is opaque to much of the electro-magnetic spectrum. In space, the absence of...
Cryosurgery
Review of Cryosurgery Boris Rubinsky, PhD Hebrew University School of Science and Engineering Research Center for Biomedical Engineering 78b Ross Building Givat Ram, Jerusalem 91904 Israel rubinsky@cs.huji.ac.il as published in Annual Review of Biomedical Engineering, August 2000, Vol. 2, pp. 157-187. Abstract: Cryosurgery is a surgical technique that employs freezing...
Liquefied Natural Gas
Liquefied Natural Gas as it relates to the Field of Cryogenics John W. Bonn VJ Systems, LLC johnbonn@vjsystems-lic.com Today the world is looking for a cleaner fuel and Liquefied Natural Gas (LNG) plays a large part in achieving this goal. LNG in a liquid form is at -162°C (-259°F) and...
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?