Tag archive: damping ring

Commission accomplished

| 11 December 2008 When you have a set of new hardware and a clear mission ahead of you, the first step to complete the mission is to commission the hardware. After reconfiguring their storage ring and light source CESR, Cornell University and the international ILC team working on damping ring studies switched on the machine in early October and performed the first electron cloud studies in the low emittance configuration in November. “It was an intense week and we have some very interesting new data,” says Mark Palmer, CesrTA project manager. Category: Feature | Tagged: , , ,

Damping starts this week

| 10 July 2008 There may not have been a ribbon-cutting ceremony or speeches by heads of state. But the official kick-off of Cornell University's CESR storage ring as ILC damping ring test facility pleased the nearly 40 participants at this week's "Joint CesrTA Kickoff Meeting and ILC Damping Rings R&D Workshop (ILCDR08)" enormously. “CesrTA will give us a detailed picture of the how electron cloud builds up under a range of conditions, of how an ultra-low emittance positron beam interacts with the electron cloud, and of how beam instabilities driven by the electron cloud develop,” says Andy Wolski, damping ring group leader based at the Cockcroft Institute in the UK. “In this respect CesrTA plays a critical role in validating the decision to reduce costs by eliminating the second positron damping ring.” Category: Around the World | Tagged: , , ,

Critical electron cloud studies at Cornell

| 5 June 2008 Last week we reported on the beginning of our important experimental programme on electron cloud effects, using the Cornell Electron Storage Ring (CESR) accelerator at Cornell University. This is one of our highest-priority R&D goals during the ILC Technical Design Phase 1 (TDP-1) and is aimed at understanding the magnitude of the problem for the ILC positron damping rings and the effectiveness of our proposed mitigation techniques. Category: Director's Corner | Tagged: , , , , ,

From SLAC Today: Clearing Clouds

9 August 2007 Clouds might be welcome during a drought, but you definitely don't want them in your beam pipes. Researchers around the world are working out how to keep a section of the proposed International Linear Collider—the positron damping ring—clear of electron clouds. Category: Feature | Tagged: , , ,

Electron Cloud Studies Conducted at Cornell University

22 February 2007 In the end of January, the Laboratory for Elementary Particle Physics (LEPP) at Cornell University hosted collaborators from KEK, Lawrence Livermore National Laboratory, Argonne National Laboratory and Alfred University (an undergraduate University in New York State) to conduct electron cloud studies using the CESR storage ring. CESR is unique in that it is a “wiggler dominated” storage ring capable of storing intense beams of both electrons and positrons, singly or simultaneously. Category: Feature | Tagged: , , ,

Cost Optimisation of Wigglers for the ILC Damping Rings

| 14 December 2006 One of the key technical components of the ILC damping rings is the wiggler magnet, a device consisting essentially of a series of dipole magnets of alternating polarity. Category: Director's Corner | Tagged: , ,

The Evolving ILC Design: Eliminating One Positron Damping Ring

| 5 October 2006 We have planned from the beginning to quickly create an initial baseline and as a result of technical developments, evolve it in time. Category: Director's Corner | Tagged: , ,

Baseline Damping Rings

| 11 May 2006 One of the more difficult decisions we made last fall was which damping ring option to choose for our baseline. No recommendation came out of the Snowmass Workshop and our damping ring working group continued to study the question through much of the fall. Category: Director's Corner | Tagged: , ,

Damping Ring Recommendation

| 23 November 2005 Reaching the luminosity goals of the ILC will be an enormous challenge. It will require producing nanometer scale beam spots at the collision point and a crucial element in achieving this will be to damp the beams that come from the electron and positron sources to have ultra-low emittance. Category: Director's Corner | Tagged:
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