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Tag archive: cavity

Happy New Year!

Image: Choo Yut Shing/DESY/Perrine Royole-Degieux | 9 January 2014 Japan (followed soon by China) has entered the Year of the Horse. Happy New Year to all our readers! Category: Image of the week | Tagged: ,

No more HF?

| 26 September 2013 In June, Fermilab researchers finished successfully processing and testing the second single-cell, ILC-type cavity that was electropolished with a new technique. The water-based process, which doesn’t require the use of strong acids as the standard technique does, was developed to be more environmentally and worker-friendly. Category: Around the World | Tagged: , , ,

Hydrides: the nemesis of high-quality SRF cavities?

| 25 July 2013 Hydrogen has long been known as a possible enemy of superconducting radiofrequency (SRF) cavities - like those needed for the ILC - thanks to its potential to form non-superconducting hydrides that limit cavity quality factor (Q) and gradient. Researchers at Fermilab have made further progress in understanding the full physics behind hydrogen involvement, which is an important step towards improvements in cavity processing. Category: Around the World | Tagged: , , , , , ,

Cavity gradient

| 10 January 2013 What is an accelerating gradient? How do particles get accelerated, and how much? LCpedia explains. Category: LCpedia | Tagged: , , , ,

Quench

| 4 October 2012 What is a quench? Everything has a limit—superconducting cavities are no exception. Physicists put voltage in their superconducting cavities to boost the energy of particles. But it’s possible to ask for too much from a cavity. When this happens, the cavity fails: the superconducting material becomes normal-conducting, the voltage collapses and the energy escapes. This is called a quench. Category: LCpedia | Tagged: , ,

Cavities at your fingertips

Image: ILC, Heiner Müller-Elsner | 30 August 2012 Are you giving a talk about the ILC, cavities, S(C)RF or linac design and are looking for images that haven't been used a million times? A 17-image series following the life of a cavity from niobium ingot to finished cryomodule is now available on the Interactions image bank. Category: Image of the week | Tagged: , ,

Q – cavity quality factor

| 23 August 2012 Physicists need to understand each accelerator cavity individually before assembling a collider. One of the cavity characteristics physicists measure is called the cavity quality factor, Q factor for short. The LCpedia series continues. Category: LCpedia | Tagged: , ,

Cavities in the spotlight

Image: DESY | 7 June 2012 Some 100 cavity and photo enthusiasts came to DESY last Wednesday to hear Karsten Büßer talk about "Cool Runnings" and see the picture story of cavities in the making by science photographer Heiner Müller-Elsner. The exhibition will be on show at DESY for a few more weeks. Read more here. Category: Image of the week | Tagged: , , , ,

The secret life of cavities – not so secret any more

| 24 May 2012 There’s no doubt that the life of a cavity is exciting – lots of power, whizzing particles, superconductivity, the lot. How does it get there, what are the stations of its life? A new photo series is in production that follows a cavity from niobium ingot to cryomodule, and an exhibition of these images opens next week at DESY in Germany. Category: Around the World | Tagged: ,

A cavity made in KEK’s Cavity Fabrication Facility

| 22 March 2012 KEK's recently established Cavity Fabrication Facility is a one-stop shopping facility for fabricating superconducting radiofrequency cavities. The fully equipped facility provides a unique and valuable opportunity: a full sequence of R&D for cavity fabrication on one laboratory’s premises. Category: Around the World | Tagged: , , , , , , ,
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