Rainer Wanzenberg
(DESY)
10/9/10, 2:30 PM
Oral Sessions
At DESY the PETRA ring has been converted into a synchrotron
radiation facility, called PETRA III. 20 damping wigglers have
been installed to achieve an emittance of 1 nm. The commissioning
with beam started in April 2009 and user runs have been started
in 2010. The design current is 100 mA and the bunch to bunch
distance is 8 ns for one particular filling pattern with 960 bunches.
At a...
Mr
David Rubin
(Cornell)
10/9/10, 3:00 PM
Oral Sessions
The Cornell Electron Storage Ring (CESR) is configured as a test accelerator (CesrTA) for investigation of electron cloud phenomena in the regime of low emittance damping rings. The storage ring is equipped with superconducting damping wigglers and focusing optics to reduce horizontal emittance to 2.5 nm at 2.1GeV. The machine is instrumented with detectors (retarding field analyzers) to...
Dr
Shigeki KATO
(KEK)
10/9/10, 4:00 PM
Oral Sessions
A copper chamber without coating and TiN and diamond like carbon (DLC) coated aluminum chambers were installed to an arc section of the KEKB positron ring to make comparisons of electron cloud activity as well as total pressure and residual gas components during the beam operation under the same condition. Recently a DLC coated aluminum chamber with high surface roughness that was obtained...
Joseph Calvey
(LEPP, Cornell University)
10/9/10, 4:30 PM
Oral Sessions
Over the course of the CesrTA program at Cornell, over 30 Retarding Field Analyzers (RFAs) have been installed in the CESR storage ring. These devices, which measure the local electron cloud density and energy distribution, have been deployed in drift, dipole, quadrupole, and wiggler field regions. They can be used to evaluate the efficacy of cloud mitigation techniques in each magnetic...
Dr
Ady Hershcovitch
(Brookhaven National Laboratory)
10/9/10, 5:00 PM
Dr
Roberto Cimino
(LNF-INFN)
10/9/10, 5:30 PM
Oral Sessions
A common effort in most of the accelerator centers is to develop new technologies to produce and test beam pipe inner walls of particle accelerators with an as low as possible Secondary Electron Yield (SEY). This item, in fact, is crucial in controlling Electron Cloud formation and in reducing its effects, that are well known to be a potential bottle-neck to the performances obtainable...
