Cold Facts Digital – The go-to place for Cryogenics and Superconductivity

National Geographic Introduces the Axion Dark Matter eXperiment

Take an informative written journey around ADMX with National Geographic writer Michael Greshko, who visited as "unassuming facility in northern Seattle" and was taken in by "a supercooled tangle of tubes and wires...poised to remake the world."

Celebrate Dark Matter Day 2018

Institutions around the world will celebrate Dark Matter Day throughout October, with events highlighting experiments that could bring us closer to solving the cosmic riddle of dark matter. The Interactions Collaboration, an international community of particle physics communication specialists, is the celebration's sponsor. Information on local events is available on...

Dr. Ursula Bassler Elected President of CERN Council

CERN's council has announced the election of Dr. Ursula Bassler as its 23rd president. She replaces professor Sijbrand de Jong on January 1, 2019, and will serve for a period of at least one year.

Stirling Technology Used at Italy’s First LNG Production Facility

DH Industries BV, a CSA CSM in the Netherlands, announced that Italy's first LNG production facility, using DH's Stirling technology, officially opened on September 27.

Texas Center for Superconductivity Announces New Director

The Texas Center for Superconductivity at the University of Houston (TcSUH) has named physicist Zhifeng Ren as its new director.

Nobel Laureate Leon Lederman Dies at 96

Leon Lederman, a Nobel Prize winner who served as Fermilab’s director from 1978 to 1989, died at age 96 on October 3 at a nursing home in Rexburg ID. Lederman's overall career spanned more than 60 years, a time period where he was known as both a trail-blazing researcher responsible...

Latest in Defining Cryogenics

Cold Compressors

A common way to provide cooling below the normal boiling point of helium (4.2K) is to reduce the pressure above the bath of liquid helium, thus also reducing the bath’s equilibrium saturation temperature. For example, to produce a 1.8K bath of liquid helium, the saturation pressure has to be reduced...

Kapitza Conductance

Kapitza conductance refers to the heat transfer between a solid surface and a fluid that covers that surface. Fundamentally, it describes the inherent difficulty in transferring energy from a solid to the fluid covering the solid surface. This phenomenon was first observed by P. L. Kapitza in 1941 while studying...

Thermosyphons

A thermosyphon (or thermosiphon) is a device that transfers heat via natural convection in a fluid. The natural convection is driven by gravity with the colder, denser fluid flowing downhill and the warmer, less dense fluid flowing back up. Thus, thermosyphons connect an object to be cooled with a reservoir...

Latest in Cryo Central

Cryogenic Electronics

Randall Kirschman, consulting physicist, Mountain View, California ExtElect@gmail.com Cryogenic electronics—the operation of electronic devices, circuits, and systems at cryogenic temperatures—has been a valuable technology for decades. Cryogenic electronics (also referred to as low-temperature electronics, or cold electronics) can be based on semiconductive devices, on superconductive devices, or on a combination...

Particle Physics: High Energy Physics

Cryogenics and High-Energy Physics 1. From symmetry magazine: http://www.symmetrymagazine.org/cms/?pid=1000627: Cryogenics is the study of how materials behave at temperatures near absolute zero. In high-energy particle accelerators, such frigid temperatures reduce the electrical resistance of wires in superconducting magnets, increasing the magnet strength and allowing faster particle acceleration. The same holds...

HTS Degaussing Systems

From the Spring 2009 issue of Cold Facts (Volume 25, Number 2): Thanks to a joint project by the US Navy and a number of industry partners, high temperature superconducting (HTS) technology is now at the heart of an advanced degaussing system aboard the USS Higgins at the naval station...

Magnetic Resonance Imaging

From http://www.superconductors.org: An area where superconductors can perform a life-saving function is in the field of biomagnetism. Doctors need a non-invasive means of determining what’s going on inside the human body. By impinging a strong superconductor-derived magnetic field into the body, hydrogen atoms that exist in the body’s water and...

Latest in Ask the Experts

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?

Using nitrogen as a cryogen

Is it possible to achieve -200˚C using nitrogen as a cryogen?

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