Title :
Transverse wakefields from tapered collimators: measurements and analysis
Author :
Tenenbaum, P. ; Bane, K. ; Eriksson, L. ; Jobe, R.K. ; McCormick, D. ; Ng, C.K. ; Taubenheimer, T.O. ; Ross, M.C. ; Stupakov, G. ; Walz, D. ; Onoprienko, D.
Author_Institution :
Linear Accel. Center, Stanford Univ., CA, USA
Abstract :
We report on a series of measurements of the transverse wakefield from tapered collimators. The collimators were designed to principally present a geometric impedance to the beam, and to minimize impedances from resistivity or surface features; in addition, the geometries of the collimators were selected to permit examination of the scaling behavior of the wakefield due to collimator taper angle and minimum gap size. We present the measured near-center wakefields of the collimators, as well as the effect of bunch-length variation. The measurements are compared to analytic models and MAFIA simulations
Keywords :
beam handling equipment; linear colliders; particle beam bunching; wakefield accelerators; MAFIA simulations; analytic models; bunch-length variation; collimator taper angle; geometric impedance; linear colliders; minimum gap size; near-center wakefields; scaling behavior; tapered collimators; transverse wakefields; Apertures; Colliding beam accelerators; Collimators; Conductivity; Geometry; Laser beams; Position measurement; Protection; Surface impedance; Testing;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.987530
