Author: Ma, W.J.
Paper Title Page
TUPMY018 Recent Progress of Proton Acceleration at Peking University 1588
SUPSS027   use link to see paper's listing under its alternate paper code  
 
  • Q. Liao, Y.X. Geng, C. Lin, H.Y. Lu, W.J. Ma, X.Q. Yan, Y.Y. Zhao
    PKU, Beijing, People's Republic of China
 
  We study the enhanced laser ion acceleration using near critical density plasma lens attached to the front of a solid target. The laser quality is spontaneously improved by the plasma lens and energy density of hot electrons is greatly increased by the direct laser acceleration mechanism. Both factors will induce stronger sheath electric field at the rear surface of the target, which accelerates ions to a higher energy. Particle-in-cell simulations show that proton energy can be increased 2-3 times compared with single solid target. This result provides the opportunities for applications of laser plasma accelerator, such as cancer therapy. Further experiments will soon be carried out on 200 TW laser acceleration system at Peking University.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY018  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
TUPMY019 CLAPA Proton Beam Line in Peking University 1592
SUPSS028   use link to see paper's listing under its alternate paper code  
 
  • J.G. Zhu, J.E. Chen, C. Lin, H.Y. Lu, W.J. Ma, L. Tao, X.Q. Yan, K. Zhu
    PKU, Beijing, People's Republic of China
 
  Comparing with the conventional accelerator, the laser plasma accelerator can accelerate ions more effectively and greatly reduce the scale and cost. A laser accelerator− Compact Laser Plasma Accelerator (CLAPA) is being built at Institute of Heavy Ion physics of Peking University. According to the beam parameters from proof of principle experiments and theoretical simulations, we design the beam line for ions transport which is being built now and in the near future we will carry out experimental study with it. The beam line is mainly constituted by quadrupole and analyzing magnets . The quadrupole triplet lens collects protons generated from the target, while the analyzing magnet system will choose the protons with proper energy. The transport is simulated by program TRACK. The beam line is designed to deliver proton beam with the energy of 1~ 40MeV, energy spread of ±1% and 106-8 protons per pulse to satisfy the requirement of different experiments. The transmission efficiency is about 94% when the energy spread is ±1%.  
DOI • reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY019  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)