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Tag archive: cavity gradient

Important progress on IHEP superconducting cavity

| 22 July 2010 A 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: , , , , , , ,

What drives the development of technology

| 25 November 2009 (...) Taking all ILC cavity tests into account, a globally-based pattern of achievement and success emerges, giving confidence that we will meet or even exceed the forward looking-goal we set for ourselves at Snowmass in 2005. Category: Director's Corner | Tagged: , ,

Global effort for high-gradient ILC SCRF cavities

| 30 July 2009 I would like to thank Barry Barish (...) for the opportunity to write his column and expand on the efforts for an area of the Main Linac and Superconducting Radiofrequency (ML-SCRF) technology and the tasks ahead of us. Category: Director's Corner | Tagged: , , , ,

Improvements in high-gradient ILC SCRF cavities

| 9 July 2009 ... we plan to set an average operating gradient of 31.5 MV per metre for the 14560 cavities mounted in the 1680 cryomodules of a 500-GeV ILC. Category: Director's Corner | Tagged: , , , ,

Past successes in superconducting RF are a good omen for the ILC

26 February 2009 One of the high-value R&D programmes for the ILC is to reliably reach gradients of 35 Megavolts per metre (MV/m) in one-metre long (9-cell, 1.3-Gigahertz) niobium cavities, the heart of the main linac. More than a dozen such cavities have demonstrated gradients between 35 and 40 MV/m at DESY, and more recently at Jlab. The challenge is to hit such performance levels nearly every time, and with nearly every cavity! This means that we need to conduct some good science to understand the basic nature of the gradient limits, and clever engineering to invent methods to overcome these. Category: Feature | Tagged: ,

From Jefferson Lab News: ILC treatment of JLab cavity garners exciting result

5 February 2009 For the last few years, Jefferson Lab staff members have used the lab's unique facilities to test various accelerator components for a proposed next-generation collider, the International Linear Collider. Reminiscent of a stack of doughnuts, accelerator components called cavities energize particles for use in experiments that explore the smallest bits of matter. Category: Around the World | Tagged: , , ,

From CERN Courier: Viewpoint: SRF technology comes full circle

26 November 2008 Nearly a half-century ago, researchers at Stanford University began investigating superconducting RF (SRF) acceleration. They would not have been surprised to learn that by 1994, SRF had come into large-scale use in Jefferson Lab's Continuous Electron Beam Accelerator Facility, or that by 2008 it was planned as the enormous, ultra-cold, dynamic-but-delicate heart of the proposed International Linear Collider (ILC). Nor would they be surprised to learn that this complex technology's challenges nevertheless continue to vex accelerator builders. In my view, it's time for the accelerator community to go back to where the pioneers at Stanford began, hit the pause button, and take a careful look at more than four decades of SRF R&D. Category: Around the World | Tagged: , , ,

Progress on our Technical Design Phase goals

| 26 November 2008 Last week several hundred scientists and engineers gathered at the new Forum Event Center of the University of Illinois at Chicago for LCWS 08 and ILC 08. Once per year the Global Design Effort hosts a plenary meeting to which the entire community is invited to hear progress, plans and general presentations, and for 2008 this meeting was ILC08. Category: Director's Corner | Tagged: , , , ,

US-manufactured cavity achieves high gradient

| 6 December 2007 Turkey, stuffing and pumpkin pie – all things you might appreciate on Thanksgiving. ILC scientists in the United States had something extra to be thankful for this year. On 21 November, the day before the Thanksgiving holiday in the US, a superconducting cavity manufactured by Advanced Energy Systems in Medford, NY, reached a high gradient of 32.6 megavolts per metre (MV/m) at Jefferson Laboratory. “This is the first US-built ILC nine-cell cavity to reach a gradient close to the ILC specification,” said Rongli Geng, the lead scientist at JLab on the nine-cell high-gradient cavity processing R&D. JLab scientists are hopeful that the cavity, dubbed AES2, will reach an even higher gradient after further processing. Category: Around the World | Tagged: , , ,

Fermilab’s new Horizontal Test Stand sees its first cavity

| 24 May 2007 The newest resident in Fermilab’s Meson Detector Building is up and running. Last week, Fermilab scientists installed a nine-cell 1.3 GHz TESLA-style cavity into a cryostat in order to commission the new Horizontal Test Stand. Designed to test both 3.9 Ghz and 1.3 Ghz 9-cell niobium cavities, the Horizontal Test Stand will play an important role in the growing ILC R&D programme at Fermilab. Category: Feature | Tagged: , , ,
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