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Undergrads Construct Cryogenic Star-Tracking Instrument

A team of undergraduates from the Rochester Institute of Technology (RIT) will soon deploy its Cryogenic Star Tracking Attitude Regulation System, a telescope and camera based “compass” for rockets that will orient the payload based on the images of stars. CSTARS uses a new kind of detector technology and will...

19th International Cryocooler Conference

A group of 180 researchers and engineers from 12 countries gathered in San Diego June 20-23 for the 19th International Cryocooler Conference (ICC19), coordinated by the NASA Jet Propulsion Laboratory (JPL) and held at the Town and Country Resort and Convention Center. The conference included a combination of 80 oral...

LIGO Collaboration Prepares Cryogenic Update

In the past year, the Laser Interferometer Gravitational-wave Observatory (LIGO) has twice observed gravitational waves from the merger of black holes in deep space. Thermal noise, however, limits how small a motion the system can detect. In order to address this issue, and thus take the next big step in...

SCW Student Scholarship Established

CSA has established the T.H.K. Frederking Space Cryogenics Workshop (SCW) Student Scholarship, an award honoring our first CSA Fellow, Dr. Traugott Frederking, who generously sponsored selected students to attend SCW to help develop their technical maturity by exposing them to current leaders and emerging developments in the field.

Experts Engineer New Cryostat Design Volume

The proper design of cryostats requires knowledge of many disciplines including: cryogenic properties of materials, heat transfer and thermal insulation, instrumentation, safety, structures and seals. One of the best ways to learn about cryostat design is to study the design choices and resulting performance of previous designs. This book provides...

Technifab Restructures, Announces Three Divisions

Technifab Products, Inc. (CSA CSM) has announced organizational changes, segmenting its business into three distinct divisions—Technifab Cryogenics, Technifab CNC Manufacturing and Technifab Cryodewars.

Latest in Defining Cryogenics

Liquid Hydrogen

Hydrogen becomes a liquid at 20K and 1 bar. Liquid hydrogen (LH2) is an important substance in industry, transportation and research. Industrial uses of hydrogen include applications in the electronics, glass, chemical and metal processing fields. In these applications, the hydrogen is generally used as a room temperature gas but...

Superconducting Radiofrequency Cavities

Superconducting radio frequency (SRF) cavities represent an important application of cryogenics and superconductivity. SRF cavities are a technology for accelerating charged particle beams via the transfer of radiofrequency (RF) energy to the beams via resonant structures. As such, they are frequently found in large particle accelerators used for scientific research....

Thermal Radiation Shields

Actively cooled thermal radiation shields are a common feature of cryostats whose lowest temperature is less than 77K. These shields, which typically operate at temperatures between that of LN2 and 40K, block thermal radiation from higher temperatures from reaching lower temperature cryogenic components or fluids. Since the heat radiated from...

Latest in Cryo Central

Magnets

From “Superconductivity: Present and Future Applications” by the Coalition for the Commercial Application of Superconductors. Particle physics uses accelerators to recreate the conditions of the early universe in an attempt to piece together the complex puzzle of how we got to where we are today. These huge machines are used...

Energy Storage

From “Superconductivity: Present and Future Applications” by the Coalition for the Commercial Application of Superconductors. With power lines increasingly congested and prone to instability, strategic injection of brief bursts of real power can play a crucial role in maintaining grid reliability. Small-scale Superconducting Magnetic Energy Storage (SMES) systems, based on...

Astronomy

ASTRONOMY IN SPACE by Peter V. Mason, retired, Jet Propulsion Laboratory, and Visiting Associate, California Institute of Technology. Pmason@alumni.caltech.edu In thinking about the reasons to perform astronomy in space, we first consider the effect of the earth’s atmosphere. On a scale of decreasing energy, gamma rays, cosmic rays, X-rays and...

Cryocoolers

What is a Cryocooler? A mechanism that can extract heat from an object (cooler) and by doing so draw its temperature down below approximately 150 Kelvin (cryo). — (Courtesy Dr. Willy Gully) What is the difference between a Cryocooler and a Cryostat? A cryostat is any device designed to maintain...

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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