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Persistent URL http://purl.org/net/epubs/work/44117
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Record Id 44117
Title Measurements of the transverse wakefields due to varying collimator characteristics
Abstract We report on measurements of the transverse wakefields induced by collimators of differing characteristics. An apparatus allowing the insertion of different collimator jaws into the path of a beam was installed in End Station A (ESA) in SLAC. Eight comparable collimator geometries were designed, including one that would allow easy comparison with previous results, and were installed in this apparatus. Measurements of the beam kick due to the collimator wakefields were made with a beam energy of 28.5 GeV, and beam dimensions of 100 microns vertically and a range of 0.5 to 1.5 mm longitudinally. The trajectory of the beam upstream and downstream of the collimator test apparatus was determined from the outputs of ten BPMs (four upstream and six downstream), thus allowing a measurement of the angular kick imparted to the beam by the collimator under test. The transverse wakefield was inferred from the measured kick. The different aperture designs, data collection and analysis, and initial comparison to theoretical and analytic predictions are presented here.
Organisation CCLRC , ASTeC , ASTeC-RFD , CI
Keywords physics
Funding Information
Related Research Object(s): 34175355
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Language English (EN)
Type Details URI(s) Local file(s) Year
Preprint CI Preprints Cockcroft 07-49 2007. Submitted to: Particle Accelerator Conference 2007 (PAC07), Albuquerque, New Mexico, USA, 25 Jun 2007 Cockcroft-07-49.pdf 2007