Title :
The UCLA/FNPL Time Resolved Underdense Plasma Lens Experiment
Author :
Thompson, M.C. ; Badakov, H. ; Rosenzweig, J.B. ; Travish, G. ; Edwards, H. ; Fliller, R. ; Kazakevich, G.M. ; Piot, P. ; Santucci, J. ; Li, J. ; Tikhoplav, R.
Author_Institution :
UCLA, Los Angeles, CA, 90095, USA, mct@physics.ucla.edu
Abstract :
A gaussian underdense plasma lens with peak density 5 × 1012cm-3and a full width half maximum (FWHM) length of 2.2 cm has been used to focus a relativistic electron beam. This plasma lens has a focusing strength equivalent to a quadrupole magnet with a 150 T/m field gradient. The lens focused a 15 MeV, 16 nC electron beam with initial dimensions σr= 500 μm and σz= 5 mm onto an optical transition radiation (OTR) screen 2 cm downstream of the lens. The average transverse area of the plasma focused electron beam was typically demagnified by a factor of 22. The light from the OTR screen was imaged into a streak camera in order to directly measure the correlation between z and σrwithin the beam.
Keywords :
Electron beams; Focusing; Lenses; Particle beams; Plasma accelerators; Plasma density; Plasma diagnostics; Plasma displays; Plasma sources; Superconducting magnets;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1591346
