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14 May 2019 Recent development of PW laser and ion acceleration in SKL in SIOM (Conference Presentation)
Wenpeng Wang
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Proceedings Volume 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III; 1103609 (2019) https://doi.org/10.1117/12.2521871
Event: SPIE Optics + Optoelectronics, 2019, Prague, Czech Republic
Abstract
Recent development of PW laser and ion acceleration in SKL in SIOM The recent developments of the PW laser system (SULF) and ion acceleration in State Key Laboratory (SKL) of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics (SIOM) are introduced. A double beam image (DBI) technique is coupled in the two-stage accelerating mechanism to simultaneously improve the spectra and maximum energy of the proton beam. The cascaded shock acceleration mechanism and the cascaded TNSA mechanism work together to generate a proton beam with a narrow-spectrum center at 5.4 MeV and a long tail up to 14.4 MeV. Experimental and simulation results show that spatial collineation, time synchronization, and real-time monitoring are needed for optimum two-stage proton acceleration and are realized by the DBI technique to a certain extent in our experiment. Depending on DBI, the narrow spectral ion beam with low charge-to-mass (C2+) generated by triple-stage acceleration mechanism are also investigated by a simple numerical model and partially verified by the experiment. In addition, some new manipulations on particles are investigated by the Laguerre–Gaussian (LG) laser in the relativistic region, which are subverted from the classical tweezers, spanner, or wrench driven by the weak LG light or LG laser in previous studies.
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Wenpeng Wang "Recent development of PW laser and ion acceleration in SKL in SIOM (Conference Presentation)", Proc. SPIE 11036, Relativistic Plasma Waves and Particle Beams as Coherent and Incoherent Radiation Sources III, 1103609 (14 May 2019); https://doi.org/10.1117/12.2521871
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KEYWORDS
Laser development
Ions
Ion lasers
Optical tweezers
Computer simulations
Ion beams
Laser systems engineering
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