Almost invariably, when superconducting accelerator cavities undergo performance tests, they present a dual personality that leaves researchers scratching their heads. When the niobium structure is stood upright (on a test stand), its quality factor mimics its posture – it measures high. But when the same cavity is placed horizontally in a cryomodule, its quality factor […]
A cavity made in KEK’s Cavity Fabrication Facility
To realise the International Linear Collider, scientists need to address many issues. One of the most important is the primary cost driver for the ILC, the superconducting radiofrequency (SCRF) cavity and cryomodule systems. At KEK, the team responsible for SCRF activity intends to seek cost-effective mass-production scenarios for the SCRF cavity. The ILC will have […]
Jefferson Lab and IHEP renew accelerator cavity collaboration
Under the umbrella of the PRC-US Cooperation on High Energy Physics, Jefferson Lab and IHEP exchange notes on cavity R&D
At a recent meeting between US and Chinese high-energy and nuclear physics laboratories, Jefferson Lab in Newport News, US, and the Institute for High Energy Physics (IHEP) in Beijing, China, renewed a partnership to collaborate on the development of superconducting accelerator cavities, including an ILC-type nine-cell cavity. It is a continuation of a collaboration that […]
Good gradients in seconds flat
Fermilab scientists turn their attention to individual cavities to improve beam stability
A constant acceleration gradient along many thousands of particle bunches provides for a particle beam’s sure-footed climb to higher energies, readying the beam for collision by providing the same acceleration for each bunch. But constant gradients don’t come naturally for accelerating cavities, the elements that pave the particles’ ascending path. A cavity has to be […]
Seamless cavity performance
Laboratories in the US begin to take a serious look at hydroforming as a method for creating ILC-type cavities.
Researchers in the US may soon be pumping their cavities into shape. Last year Fermilab scientists put out a call to industrial companies to propose a procedure for hydroforming ILC-type cavities. They hope that by next year, the selected company will provide Fermilab with three hydroformed nine-cell cavities for testing. “Hydroforming’s a good idea whose […]
Globalising R&D
Director’s Corner 15 May 2008 Barry Barish Globalising R&D The coordination of superconducting radiofrequency R&D is central to the Global Design Effort’s mission of bringing the design for the ILC to the point we can make a robust proposal to our governments. Our efforts are becoming globalised more rapidly than we had envisioned. To achieve […]
From Fermilab Today: Fermilab reaches milestone with successful cavity test
A successful test of a dressed 3.9 GHz superconducting radiofrequency cavity last week put Fermilab among an elite group that can produce cutting-edge, high-powered accelerator components. Fermilab employees need to test three more cavities before they can assemble a cryomodule for shipment to DESY for use in the laboratory’s free-electron laser accelerator. The collaboration with […]