Cold Facts Digital – Page 63 – The go-to place for Cryogenics and Superconductivity

Fermilab Delivers First Cryomodule for Ultrapowerful X-ray Laser at SLAC

Scientists and engineers worldwide celebrated the delivery of a massive 40-foot-long cryomodule to SLAC National Accelerator Laboratory in January, the first of 37 units to be included in the facility’s planned Linac Coherent Light Source upgrade.

Friction Found in Superfluid Helium near Absolute Zero

Friction shouldn't appear in superfluid helium at temperatures near absolute zero, but that's just what researchers at Aalto University in Finland report observing in a new experiment. Understanding the causes and effects of the friction could pave the way for explorations into the composition of neutron stars and our universe,...

Brookhaven Brings a Hidden Superconducting State to Light

A team of scientists has detected a hidden state of electronic order in a layered material containing lanthanum, barium, copper and oxygen (LBCO). When cooled to a certain temperature and with certain concentrations of barium, LBCO is known to conduct electricity without resistance, but now there is evidence that a...

Low Energy PBT More Effective than High Energy for Killing Cancer Cells

Collaborative research led by the University of Liverpool has identified the specific cellular process that helps cancer cells repair damage resulting from proton beam therapy (PBT), determining that low energy treatments are more effective in the battle against cancer.

First APAs Delivered for ProtoDUNE Detectors

The first prototype Anode Plane Assemblies (APAs) for ProtoDUNE have arrived at CERN, where two large liquid argon detectors are under construction to test the engineering specifications for the US-based Deep Underground Neutrino Experiment (DUNE). Scientists will use the APA screens to record streaks of ionization charge inside the detectors.

WSU Recreates Titan Seas for NASA Submarine Mission

NASA's Cassini spacecraft ended its exploration of Saturn in 2017, but the space agency is already planning a more immersive return mission, aiming to plunge a submarine into the seas of Titan, the largest of Saturn’s many moons. Researchers at Washington State University are working with NASA, replicating the moon's...

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

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

Suppliers of regenerator materials

I was looking for suppliers of regenerator materials. Can you please provide a list of vendors for: • Lead spheres • Bronze screen discs • Rare earth materials and spheres Thank you in advance for any help you can provide.

Containing ice accumulation while recovering helium

We are implementing a system to recover helium from our Janis ST-500 continuous flow LHe cryostat. The recovery system uses standard 1/4″ plastic tubing, which we connect directly to the cryostat’s exhaust port. The problem with this setup is that the gas is still quite cold as it leaves the...

Looking for some advice regarding cryogenic modeling in ANSYS FEA software

I am looking for some advice regarding cryogenic modeling in ANSYS FEA software. I have been trying to use the Transient Thermal module, in workbench 14.5, to model the cooling of a device in a dilution fridge. I have approximate values for the cooling power of each plate in the...

Compensators and/or accumulators: Are they used in cryogenics?

Are compensators and/or accumulators, high or low pressure, used in cryogenics? Are they used in space?

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