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ATLAS Measures Key Higgs Boson Interaction with High Precision

The ATLAS Collaboration has released new measurements of the Higgs-boson decay probability to tau leptons in its four major production modes: gluon fusion (ggF), vector-boson fusion (VBF), the associated production with a W or Z boson (WH, ZH), and the associated production with a top-quark pair (ttH).

Purdue-Designed Heat Transfer Experiment Arrives at International Space Station

On August 10, an Antares rocket launched from the Mid-Atlantic Regional Spaceport on Wallops Island VA. Atop the rocket was a Northrop-Grumman Cygnus spacecraft carrying 3,000 pounds of supplies for the astronauts aboard ISS, as well as the Flow Boiling and Condensation Experiment (FBCE) and three other science experiments. Cygnus...

Plug Power Breaks Ground on Green Hydrogen Production Plant in Georgia

On August 10, Plug Power Inc., a leading provider of turnkey hydrogen solutions for the global green hydrogen economy, broke ground on the site of a green hydrogen production plant in Camden County GA, where 15 tons of green liquid hydrogen will be produced per day.

Helion Energy Breaks Ground on Next-Generation Fusion Facility Site in Washington

Helion Energy (Helion), a clean energy company committed to creating a new era of zero-carbon electricity through fusion, broke ground on the next iteration of its fusion facility in Everett WA on July 27. The new facility will accelerate Helion’s efforts to build the world’s first commercially viable fusion power...

James Webb Passes Critical Mission Review for 2021 Launch, Final Testing Nearing Completion

The joint NASA/ESA/CSA James Webb Space Telescope (JWST) has passed its critical final mission analysis review — clearing the way for a late 2021 launch from the Guiana Space Centre in Kourou, French Guiana on an Arianespace Ariane 5 rocket.

CryoWorks Names New CEO, Timothy Mast, Jr.

On June 1, California-based CryoWorks, Inc. announced that the company’s board of directors has named Timothy Mast, Jr. as chief executive officer and president, effective immediately. Mr. Mast, Jr. has worked at CryoWorks since 2011 and has served as vice president of operations since February 2019. He succeeds Timothy Mast,...

Latest in Defining Cryogenics

Mixed Refrigerant Cycles

Most cryogenic refrigeration systems, both large scale systems and cryocoolers, use helium as a working fluid. There are a number of advantages to helium, not the least of which is that helium remains a fluid down to the lowest achievable temperatures. In order to freeze helium, pressures of over 20...

Fountain Pumps and He II Phase Separators

Helium II (He II), the second liquid phase of the 4He isotope described in this column in Cold Facts Spring 2010 (http://2csa.us/he2), can be modeled as consisting of two interpenetrating fluids. One, the superfluid component, has zero viscosity and entropy and the other, the normal fluid component, has nonzero viscosity...

Turboexpanders

A vital technology in the refrigerators and liquefiers described in Cold Facts Volume 31 Number 3 is that of turboexpanders. These devices are rotating machines in which the process fluid (e.g., helium) does work against the turboexpander while moving from high pressure to a lower pressure and thus is cooled....

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

Investigating use of hydrophobic surfaces in cryogenics

I am a final year Physics Undergraduate at the University of Cambridge (UK). As a part of one of my courses this year, I have been asked to investigate the use of hydrophobic surfaces in cryogenics.

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