Northrop Grumman, ATK complete backbone of NASA’s James Webb Space Telescope
Northrop Grumman Corporation and teammate ATK have completed manufacturing of the backplane support frame (BSF) for NASA's James Webb Space Telescope.
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HYPRES announces commercial availability of new chip fabrication process
HYPRES, Inc., the Digital Superconductor Company™, announced the commercial availability of its newest six-layer planarized chip fabrication process.
Nigel Lockyer of Canada’s TRIUMF lab named Fermilab director
Nigel Lockyer, director of Canada’s TRIUMF laboratory for particle and nuclear physics and a professor of physics and astronomy at the University of British Columbia, has been selected to become the next director of the US Department of Energy’s Fermi National Accelerator Laboratory.
International team at Keck Observatory strengthens Big Bang theory
Using the most powerful telescope on Earth, an international team of scientists has discovered that the moments just after the Big Bang happened more like the theory predicts, eliminating a significant discrepancy that troubled physicists for two decades.
Resistivity switch is window to role of magnetism in iron-based superconductors
Physicists at the US Department of Energy’s Ames Laboratory have discovered surprising changes in electrical resistivity in iron-based superconductors. The findings, reported in Nature Communications, offer further evidence that magnetism and superconductivity are closely related in this class of novel superconductors.
Oxford Instruments dilution refrigerator plays role in D-Wave quantum computer
Oxford Instruments’ cryofree™ dilution refrigerator system, Triton®, is an important component in the latest quantum computer to be supplied by D-Wave Systems Inc to the new Quantum Artificial Intelligence Lab in the US.
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Dewar
A dewar is a type of cryostat named after Sir James Dewar, the researcher who first developed the concept of a vacuum insulated container with silvered walls to reflect thermal radiation. Dewar was the first to liquefy hydrogen, and he created the device to store his discovery. The thermos bottle...
Stirling and Gifford-McMahon Cryocoolers
Stirling and Gifford-McMahon (GM) cryocoolers are two of the most commonly used cryocoolers in cryogenics. Both devices have a significant industrial base and operate at a wide range of temperatures and capacities. The thermodynamic cycles for both of these cryocoolers are quite similar. The Stirling cycle consists of a compressor,...
Liquefied Natural Gas (LNG)
A significant commercial application of cryogenics is the liquefaction, transport and storage of natural gas. Liquefied Natural Gas (LNG) is generally 95 percent methane with a few percent ethane and much lower concentrations of propane and butane. LNG liquefies at 111.6 K. Unlike many applications of cryogenics, the motivation for...
Magnets
From “Superconductivity: Present and Future Applications” by the Coalition for the Commercial Application of Superconductors. Particle physics uses accelerators to recreate the conditions of the early universe in an attempt to piece together the complex puzzle of how we got to where we are today. These huge machines are used...
Energy Storage
From “Superconductivity: Present and Future Applications” by the Coalition for the Commercial Application of Superconductors. With power lines increasingly congested and prone to instability, strategic injection of brief bursts of real power can play a crucial role in maintaining grid reliability. Small-scale Superconducting Magnetic Energy Storage (SMES) systems, based on...
Astronomy
ASTRONOMY IN SPACE by Peter V. Mason, retired, Jet Propulsion Laboratory, and Visiting Associate, California Institute of Technology. Pmason@alumni.caltech.edu In thinking about the reasons to perform astronomy in space, we first consider the effect of the earth’s atmosphere. On a scale of decreasing energy, gamma rays, cosmic rays, X-rays and...
Cryocoolers
What is a Cryocooler? A mechanism that can extract heat from an object (cooler) and by doing so draw its temperature down below approximately 150 Kelvin (cryo). — (Courtesy Dr. Willy Gully) What is the difference between a Cryocooler and a Cryostat? A cryostat is any device designed to maintain...
Pressure for an adiabatic liquefaction of nitrogen
I am a student from Chicago, and I need to calculate the pressure necessary for an adiabatic liquefaction of nitrogen.
Thermal expansion coefficient for LN2, LO2 and LH2
Can anyone help me get a table (or diagram) of different thermal expansion coefficient for different cryogenic liquids (especially LN2, LO2 and LH2)?
Small, low power cryocooler to use in a working prototype device
Where can I find a small, low power cryocooler to use in a working prototype device? Please provide a list of suitable manufacturers.
Looking for super insulation for a cylindrical container
We need super insulation for a cylindrical container of approximately 10 cm in diameter and 10 cm height to be kept at -40 ° Centigrade for less than 24 hours (outside=room temperature).