Transverse Defocusing Study in LPWA Channel for Linear and Bubble Modes

Sergey Polozov, Vladimir Rashchikov, Yaroslav Shashkov, Kim, Dong Eon (Ed.), Schaa, Volker RW (Ed.), Petit-Jean-Genaz, Christine (Ed.), Ko, In Soo (Ed.), Kim, Kyung Sook (Ed.)
Laser plasma wakefield acceleration (LPWA) is one of most popular novel trends of acceleration. The LPWA has two serous disadvantages as very high energy spread and low part of electrons capturing into acceleration. The waveguide and klystron type beam pre-modulation schemes was proposed *, ** to growth capturing and to limit the energy spectrum of 2-3 % for 200-300 MeV beam. One interesting effect was detected due to numerical simulation of beam dynamics in plasma channel. Not captured
more » ... ot captured electrons are escape to the channel border fast and this effect should be explained. It was shown that such effect is caused by effective potential function which forms very high defocusing transverse field after its trailing edge. The results of such explanation verified by numerical simulations are discussed in report for linear and bubble LPWA modes.
doi:10.18429/jacow-ipac2016-wepmb049 fatcat:xqe7cdpe7rauvf5sdpz43stgji