Speaker
Description
See the full abstract here http://ocs.ciemat.es/EPS2019ABS/pdf/I1.204.pdf
Laser wakefield acceleration (LWFA) can realize compact electron accelerators using significantly higher acceleration field than that of conventional rf accelerators. The progress of laser technologies reached PW peak power [1] and advanced the energy of laser electron accelerators to several GeV energy range [2,3]. Recently, we accomplished upgrading one of our PW beamlines to 4 PW peak power [4] and started applying it to LWFA experiments. In the recent experiments, we obtained 4.5 GeV electron beam by applying a 2.5 PW laser pulse to a 7-cm helium gas cell target. In the experiment, we observed the charge of the electron beam was noticeably enhanced through the ionization injection scheme implemented by adding 1 % neon to the helium gas. Here, we present the recent progress in LWFA research with multi-PW lasers. In addition, we will discuss new LWFA schemes for improving beam quality. These developments of high energy electron beam with multi-PW lasers will open gateways to investigate nonlinear QED phenomena and nuclear processes.
Reference
[1] J. H. Sung et al., Opt. Lett. 35, 3021 (2010).
[2] H. T. Kim et al., Phys. Rev. Lett. 111, 165002 (2013).
[3] H. T. Kim et al., Sci. Rep. 7,10203 (2017).
[4] J. H. Sun et al., Opt. Lett. 42, 2058 (2017).
