Barry Barish | 21 November 2012One of the most important goals of the Global Design Effort has been to demonstrate that high-gradient cavities can be reliably produced in industry. We established two gradient goals: to produce cavities qualified at 35 Megavolts per metre (MV/m) in vertical tests and to demonstrate that an average gradient of 31.5 MV/m is achievable for ILC cryomodules. Furthermore, we set a goal of producing these high-gradient cavities in industry with 50% yield by 2010 and 90% yield by the end of 2012. We have recently achieved these ambitious goals!
Category: Director's Corner | Tagged: accelerator R&D, cavity gradient, superconducting cavity, TDR
Marc Ross | 28 June 2012New machines set new challenges for accelerator experts, and there are a number of challenges that the ILC R&D team has had to face before sitting down to write a convincing Technical Design Report. Beam test facilities in all regions have delivered and are still delivering important results. Project Manager Marc Ross takes stock.
Category: Director's Corner | Tagged: cavity gradient, SCRF, TDR, Technical Design Phase
Rika Takahashi | 9 December 2010Designing and fabricating an optimal accelerating cavity is not so simple. There are two important parameters scientists are looking for: the gradient of 35 megavolts per meter (MV/m) and the quality factor (Q0) of greater than 0.8×10^10. A Japanese cavity now fulfilled those requirements for the first time at a test which took place at the Superconducting radiofrequency Test Facility (STF) at KEK, adding momentum towards future mass production.
Category: Feature | Tagged: accelerating gradient, cavity gradient, KEK, Kyoto camera, nine-cell cavity, quality factor, STF
Barry Barish | 4 November 2010One of our most visible and important ILC R&D short-term milestones has been to demonstrate production of ILC superconducting radio frequency cavities with gradient of greater than or equal to 35 megavolts per metre (MV/m) and Q0 = 8x10^9 and 50 percent production yield. [...] Today I announce the successful achievement of that important 2010 milestone.
Category: Director's Corner | Tagged: cavity gradient, milestone, quality factor
Min Zhang | 22 July 2010A 1.3-Gigahertz low-loss type large-grain nine-cell superconducting cavity called IHEP-01 produced at the Institute of High Energy Physics (IHEP) in Beijing, China, achieved an accelerating gradient of 20 Megavolts per metre in its first vertical test at KEK on 1 July. This may not be the design gradient yet, but it marks an important progress on the research and development of superconducting radio frequency (SRF) technology in China.
Category: Around the World | Tagged: 1.3 GHz, Beijing, cavity gradient, China, IHEP, IHEP-01, nine-cell cavity, SRF technology