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The Next Niobium Goal: Medium-Field SRF Cavities with High Quality Factor

In his guest column, Dr. Lance Cooley writes, "We are now beginning to evolve our present knowledge about producing high-gradient cavities to take on goals of high-Q CW cavities. The starting point for this transition is clearly to explore simple adaptations of the present ILC process. But it is not...

American College of Cryosurgery Holds Annual Meeting

The American College of Cryosurgery, founded in 1977, hosted its first meeting January 2-7, 2013, after a hiatus of nearly ten years. The meeting venues provided a unique experience for participants and accompanying guests. A land-based session was held at the Hyatt Regency Downtown Miami Hotel.

Donnelly Team Designs Cryogenic Remediation of Power Pollutants

Professor John M. Pfotenhauer writes, "The fields of low temperature physics and energy and environment do not frequently interact. Imagine my astonishment to find in the 2010 spring edition of a newsletter from the Department of Physics at my graduate school, the University of Oregon, that my thesis advisor from...

Cryo Community Mourns Donna Jung, International Cryogenics

It is with great regret that we report the sudden death of Donna Jung, President of International Cryogenics, on February 1, 2013. Jung was a leader in the cryogenic community, president of a longtime CSA Corporate Sustaining Member company, and a stalwart supporter of the Society. Jung, 52, was one...

New question in “Ask the Experts”: Design length of transition tubes

The question is: Are there any rules of thumb for the design length of transition tubes in order to prevent condensation at the room temperature end?

Rules of thumb for the design length of transition tubes

Are there any rules of thumb for the design length of transition tubes in order to prevent condensation at the room temperature end? By “transition tube,” I mean some standard size (O.D. and wall thickness) type 304 stainless steel tube with either 4 K or 80 K at one end...

Latest in Defining Cryogenics

Transfer Lines

Transfer lines may in some real sense be thought of as the cryogenic fluid analogy of current leads. While current leads carry electrical power to where it’s required in a cryogenic system, transfer lines do the same with cryogenic fluids. Transfer lines range in complexity from very simple U-tubes containing...

Zero Boiloff

Zero Boil Off cryostats are those that contain liquid cryogens but are designed to eliminate or vastly reduce the boil off of the liquid. These cryostats combine some of the advantages of Cryogen-Free systems (e.g. ease of use and long operational lifetime) with the advantages associated with a reservoir of liquid...

Cryomodule

Cryomodule is a term that is most commonly used to refer to cryostats that contain superconducting radio frequency (SRF) cavities. Such cavities are used to accelerate charged particle beams and are a major component of modern particle accelerators. Using the term cryomodule to refer to cryostats containing SRF cavities appears...

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

Low temperature applications of titanium and alloys

For a technical presentation I would like to have some recommendations for low temperature applications of titanium and titanium alloys. Do you think you can help me?

Designing a liquid oxygen bath

I’m designing a Liquid Oxygen Bath to place composite coupons in the bath and soak 96 samples for intervals of 8 hours, 24 hours, 7 days, 21 days, 42 days, 62 days and 90 days.

School science projects involving cryogenics and metallurgy?

Can you recommend any school science projects that would involve cryogenics and metallurgy?

Metallic Salts Normally Used to Produce Ultra-Low Temperatures?

Regarding the method known as the Adiabatic Demagnetization of Paramagnetic Salts: What metallic salts are normally used to produce the ultra-low temperatures used for near-absolute-zero cryogenic research? Which salts are the most efficient? Which make the best cooling agents? And which are used most commonly by physicists? I am looking...

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