Speaker
Description
Laser-plasma accelerators have been the most promising candidates for future compact accelerators which can be used for next-generation free-electron lasers (FELs). However, their poor stability and reproducibility limit the applications of the laser-plasma accelerator. PAL-ITF (injector test facility) has an S-band RF photocathode gun and final energy of 70 MeV, with a lower emittance, which can be used for the seed beam for advanced plasma accelerators. The electron beam from the RF photocathode gun should be matched with the wakefield focusing strength for the beta motion of the electron beam inside the wakefield for the external injection scheme. Therefore, the electron beam size should be decreased at the entrance of the plasma source for good matching, and for preserving the emittance, slowly increasing the plasma ramp is also required. We currently have been prepared the plasma lens experiments for focusing on the electron beam using the discharge capillary plasma source. We also developed the capillary source with a long ramp plasma for emittance matching. In this presentation, we present on-going advanced accelerators R&D plans at PAL-ITF.
