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Biomedical News Scientists Shine a Laser Through a Human Head It’s the first step toward an inexpensive new medical imager

Scientists Shine a Laser Through a Human Head

The possible path of 50 photons sent through a human head from a laser [left, in red] to a detector [right, green]. Credit:  Extreme Light group/University of Glasgow    For the most part, anyone who wants to see what’s going on inside someone else’s brain has to make a trade-off when...
The National Radio Astronomy Observatory (NRAO) and Associated Universities, Inc. (AUI) are launching a two-year initiative to design a next-generation radio telescope with capabilities far beyond existing observatories. Building on the success of the NSF’s Karl G. Jansky Very Large Array (VLA), the proposed array—called the next-generation Very Large Array (ngVLA)—will feature over 200 antennas spanning the US desert southwest and northern Mexico. This facility aims to advance our understanding of planets, galaxies, black holes, and fundamental physics. Credit: Bill Saxton, NRAO/AUI/NSF

NSF National Radio Astronomy Observatory and RIX Industries Join Forces to Revolutionize Cryogenic Cooling for the ngVLA Project

by RIX Industries Communications Team In a groundbreaking collaboration that could change the landscape of both scientific discovery and cryogenic technology, the U.S. National Science Foundation’s National Radio Astronomy Observatory (NSF NRAO) has teamed up with RIX Industries to develop cutting-edge cryogenic cooling solutions for the Next Generation Very Large...
A high precision accelerator cryomodule produced by Meyer Tool for use in a particle accelerator at Brookhaven National Lab. MTM’s fabrication expertise is trusted by national labs and quantum technology firms worldwide. Credit: Meyer Tool & Manufacturing, Inc.

Meyer Tool Builds the Impossible, Empowering Illinois Manufacturing

by Christian Cunningham, Meyer Tool & Manufacturing Inc. Meyer Tool & Manufacturing, Inc., a long-standing leader in cryogenic, pressure and vacuum technologies, has reached a major milestone in its growth journey. The Illinois Department of Commerce and Economic Opportunity (DCEO) recently approved the company for participation in the Manufacturing Illinois...
Figure 1: An artist's rendering of the COSI satellite. Credit: Northrop Grumman Systems Corporation

Goddard Goings

An insight into past, present and future cryogenic missions where the Cryogenics and Fluids Branch at NASA Goddard Space Flight Center had or has a significant role. by Mark Kimball, Ph.D., Cryogenics and Fluids Branch, NASA Goddard Space Flight Center Readers of this column may recall last year’s recounting of...

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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...

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...

Seeking recommendations for commercial sensors

I would like to measure vibrations in small LHe cryostats. Could anybody recommend commercial sensors which would be suitable for the purpose? I am interested in the frequency range between 1Hz and a couple of KHz, with particular attention to the low frequency side.

Estimating cost of carbon steel, pure helium storage tanks

In order to perform an indicative cost assessment of our helium cryogenic plant (still in the design phase), I need an estimation of the cost of carbon steel room temperature pure helium storage tanks. The storage pressure is 20 bar. Can anyone give me suggestions about how to estimate the...

Supplier of pressure sensor that works down to 4.2 K

In an actual experiment we would like to measure the static pressure in a cryostat in the range between one and four bar. Therefore we are looking for some (more or less) cheap pressure sensors that work in liquid helium in the pressure range up to five bar. Unfortunately all...

Looking for reference/textbook suggestions

Can you suggest some reference textbooks for practical thermodynamics applications in cryogenic fields? I need textbooks with cryogenics calculations and examples, dimensioning procedures, second principle applications in cryogenics, heat load calculations, cryogenic pump application, etc. Do such books exist? Does any similar source of information exist?