Title :
Focusing of 28.5 GeV electron and positron beams in meter-long plasmas
Author_Institution :
California Univ., Los Angeles, CA, USA
Abstract :
Plasmas can focus both electron and positron beams. However, while the incoming Gaussian transverse profile of an electron beam is preserved upon focusing, the focusing of a positron beam by a long, high-density plasma results in a tightly focused core with the formation of a charge halo. The plasma acts on the positron beam as focusing element with transverse and longitudinal aberrations. The analysis of the focused positron beam transverse profiles is presented here.
Keywords :
aberrations; electron beam focusing; electron beams; plasma applications; plasma density; 28.5 GeV; charge halo formation; electron beam; focused positron beam transverse profiles; focusing; focusing element; incoming Gaussian transverse profile; long high-density plasma; longitudinal aberrations; meter-long plasmas; positron beam; tightly focused core; transverse aberrations; Acceleration; Electron beams; Focusing; Laser beams; Particle beams; Plasma accelerators; Plasma density; Plasma waves; Positrons; Radio frequency;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1288719
