| Paper | Title | Page |
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TUCH2 |
Progress on Laser Plasma Electron Acceleration Research in Peking University | |
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| High power femtosecond laser pulse can be achieved as the technological innovation with chirped pulse amplification (CPA) and high power pulse amplification. The concept of laser plasma based accelerator has turn to realization in recent years. The laser intensity can be retained with a long distance in plasma through technical control of Rayleigh length, self-focusing, and laser guiding. Electrons can be accelerated upto GeV energy in centimeter scale, as there is no voltage breakdown in plasma, which results in a 100GV/m acceleration field as well. There are two main mechanisms of electron acceleration in laser-plasma acceleration, Direct laser acceleration (DLA) and Laser wakefiled acceleration (LWFA), which prevail in different plasma density regime. A 200-TW laser facility was recently built in Peking University, specified for laser plasma acceleration research. Different laser conditions were investigated to generate electrons which allow us to achieve electrons with energy up to 290 MeV with relatively small divergence angle of 4 mrad, and also can achieve lower energy electrons with several pC charge for direct imaging or generating X-ray for imaging as well. | ||
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