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Dimitri Delikaris named head of CERN Cryogenics Group

Dimitri Delikaris was appointed head of the CERN Cryogenics Group (CRG) on November 1, replacing Laurent Tavian. The CRG is responsible for the development, operation and maintenance of cryogenic systems used for the LHC collider, the fixed targets program and related cryogenic test facilities.

New superconducting transistors remain superconducting even in strong magnetic fields

Scientists have used molybdenum sulfide to create superconducting transistors that remain superconducting even under powerful magnetic fields that normally destroy the effect. "We have found a superconducting state that is super-robust against magnetic fields," says Justin Ye, a physicist at the University of Groningen in the Netherlands and co-author of...

New superconductivity temperature record achieved using hydrogen sulfide

Scientists at the Max Planck Institute for Chemistry in Mainz and the Johannes Gutenberg University Mainz have observed that hydrogen sulfide becomes superconducting at -70°C (203K) when placed under a pressure of 1.5 million bar, setting a new record for superconductivity.

Georgia Tech researchers use ultra cold chemistry to study atoms

Researchers at the Georgia Institute of Technology have received a $900,000 grant from the US Air Force Office of Scientific Research to study the unusual chemical and physical properties of atoms and molecules at micro-kelvin or nano-kelvin temperature ranges approaching absolute zero, the temperature at which all thermal activity stops....

Cosmological simulation models birth of universe

Researchers led by scientists at the US Department of Energy's (DOE's) Argonne National Laboratory have performed one of the largest cosmological simulations ever. Run on the Titan supercomputer at DOE's Oak Ridge National Laboratory, the simulation modeled the evolution of the universe from just 50 million years after the Big...

Fermilab attains unprecedented quality factor for superconducting cavity

Fermilab announced November 6 that researchers had recorded a record-high quality factor while performing integrated tests on a new superconducting radio frequency cavity for the SLAC-headed Linac Coherent Light Source II project. Quality factor (Q) is a measure of a particle acceleration cavity's efficiency. A higher Q means a cavity...

Latest in Defining Cryogenics

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...

Latest in Cryo Central

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...

Latest in Ask the Experts

Benefit of cryotreatment of audio circuit boards and interconnecting cables

Does cryotreatment of audio circuit boards and interconnecting cables (copper, silver, gold) properly done, provide a permanent benefit?

Standards and codes for design of cryogenic equipment?

What standards and codes are used in the design of cryogenic equipment?

Cryogenic thermophysical property data

I am in search of information regarding cryogenic thermophysical property data, specifically, Thermal Conductivity, Thermal Expansion, Stiffness and Modulus, in the 20K range. My list of materials include: Ti-6AL-4V (ELI), Al 6061-T651, and Invar (36%, plus any other composition which might have data available). Other materials which would be helpful...

Issue with insulation for ventilation system

I am with the Goodrich Corporation, an Aerospace products manufacturer. We currently utilize a number of environmental chambers (LN2 based) for environmental type conformity testing.

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