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US scientists celebrate the restart of the LHC

After two years of upgrades and repairs to the world's most powerful particle accelerator, proton beams once again circulated around the Large Hadron Collider (LHC). With the collider back in action, the more than 1,700 US scientists who work on LHC experiments are prepared to join thousands of their international...

NASA awards contract for test facilities operations, maintenance and engineering

NASA has selected HX5 Sierra, LLC, of Fort Walton Beach FL to provide operations, engineering and maintenance support services test facilities and laboratories for the agency's Glenn Research Center in Cleveland and Plum Brook Station in Sandusky OH.

NASA Glenn celebrates Hubble’s 25th anniversary

NASA's Glenn Research Center in Cleveland OH is celebrating the launch of the Hubble Space Telescope 25 years ago this April with several activities for children and adults to learn more about Hubble's amazing contributions over the last quarter century.

The dawn of DUNE

The neutrino experiment formerly known as LBNE has transformed. Since January, its collaboration has gained about 50 new member institutions, elected two new spokespersons and chosen a new name: Deep Underground Neutrino Experiment, or DUNE. The proposed experiment will span 800 miles and will be the most powerful tool in...

LHC restart back on track

On March 30, teams working on the Large Hadron Collider resolved a problem that had been delaying the restart of the accelerator, a short circuit to ground that occurred in one of the connections with an LHC magnet.

First manganese-based superconductor discovered

Scientists have unexpectedly discovered the first manganese-based superconductor, an element whose magnetism was thought to be too strong to permit superconductivity. This research might lead to new superconductors that can better resist magnetic disruption.

Latest in Defining Cryogenics

Joule-Thomson Effect

The Joule-Thomson (JT) effect is a thermodynamic process that occurs when a fluid expands from high pressure to low pressure at constant enthalpy (an isenthalpic process). Such a process can be approximated in the real world by expanding a fluid from high pressure to low pressure across a valve. Under...

Current Leads

One of the challenges of using superconducting magnets is the connection of the magnet to a room temperature power supply. This is accomplished via current leads. The trick is that current leads should ideally have a low heat leak, since they connect room temperature to cryogenic temperature, while at the...

Multilayer Insulation

Multilayer insulation (also referred to as superinsulation) is a key component in the reduction of heat leak to cryogenic systems due to thermal radiation. MLI consists of a series of uncooled reflective surfaces placed in the vacuum space between two surfaces, one warmer than the other. Generally speaking, for ideal...

Latest in Cryo Central

Air Separation and Liquefaction

by Nils Tellier, PE, President, EPSIM Corporation (CSA CSM) nils@epsim.us All illustrations courtesy EPSIM Corporation Background History of Air Separation and Liquefaction This section builds on a rich history of methods to develop deep refrigeration and cryogenic liquefaction during the 19th Century. You are encouraged to read Cryo Central’s History...

Bose-Einstein Condensate

A Bose-Einstein condensate, first proposed in 1925 by Albert Einstein based on work done by Satyendra Nath Bose (the same Bose from whom the term boson is derived), is a super-cold state of matter in which almost all of the individual atoms have “condensed” down to the lowest possible quantum...

Cold Technology for Pest Control

While it does not reach temperatures cold enough to be called cryogenic, carbon dioxide snow is at the heart of a new way of dealing with unwanted pests. It utilizes a quick freezing process that takes advantage of the properties of carbon dioxide snow and has a number of benefits...

Cryogenic Finishing

The following 3 articles discuss the uses and procedures of various type of cryogenic finishing. 1) By Robin A. Rhodes, Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Cryogenic Deflashing is employed to remove undesired residual mold flash that remains on molded parts after they are removed or ejected from the...

Latest in Ask the Experts

Information on how the emissivity of the panel changes with air fouling?

I work at a facility with a large thermal vacuum chamber. We are using both nitrogen and helium shrouds.

In search of a calculation for designing a cryostat

I am a final year physics student at the University of Birmingham, and as part of a group I am currently designing a cryostat. One of the calculations I need to make (very soon!) is how much heat will be conducted down the walls. All information I have found so...

Safety of ethylene glycol and pressurized oxygen

We are reviewing the product design of liquid filled differential level gauges and want to insure that they meet the industry requirements. The former license owner had authorized that a fill fluid of ethylene glycol (68%) and distilled water (32%) could be used for oxygen service up to 500 psi....

Heat flux in case of vacuum loss on cryogenic surfaces?

Is there anyone who has information about the heat flux in case of vacuum loss on cryogenic surfaces?

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