Tag archive: accelerating gradient

From Fermilab Today: First cavity in Cryomodule 2 achieves goal gradient

9 January 2014 On 20 December, members of the Accelerator Division SRF Electron Linac Department and the Technical Division SRF Development Department successfully brought the first accelerating cavity in Cryomodule 2 to a gradient of 31.5 megavolts per meter, the gradient required for the proposed International Linear Collider. The achievement demonstrates the cavity's successful integration into the cryomodule. Category: Feature | Tagged: , , ,

PAC meeting in Taiwan: accelerator recommendations

| 14 July 2011 The ILC Program Advisory Committee met at Academia Sinica in Taiwan in May. They made a set of specific comments and recommendations regarding the accelerator R&D programme and GDE plans and progress towards a Technical Design Report. Category: Director's Corner | Tagged: , , , , , , ,

From KEK: Japanese 9-cell SCRF cavity meets ILC specification

| 9 December 2010 Designing 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: , , , , , ,

China reaching the target gradient

9 September 2010 A 1.3-gigahertz TESLA-type nine-cell niobium superconducting cavity, named PKU3, as the third nine-cell cavity fabricated by the superconducting radiofrequency (RF) group at Peking University, Beijing, China, achieved an accelerating gradient of 28.6 megavolts per metre (MV/m) at an unloaded quality factor of 4×109 in its second vertical test at Jefferson Lab (JLab), USA on 9 August 2010. This cavity is the first nine-cell cavity with end group components in China reaching a gradient usable for the ILC. Category: Around the World | 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: , , , ,

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: , , ,

Above 42 MV/m for a single cell cavity electropolished at Saclay

| 15 March 2007 Last January, engineers from the DAPNIA laboratory in Saclay France qualified a new electropolishing facility for single cell cavities. Their first electropolished cavity reaches a promising result, above 42 MV/m (megavolts per metre) of accelerating gradient. It allows them to join the global R&D effort on these cavity treatments. Category: Feature | Tagged: , , , ,

Demonstrating the ILC Accelerating Gradient

| 6 July 2006 The centerpiece of the ILC concept is the superconducting RF technology that will be used to accelerate electrons and positrons in the main linac. Category: Director's Corner | Tagged: , , , , , ,