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Wang, X.

Paper Title Page
  • X. Wang, T. C. Katsouleas, P. Muggli
    USC, Los Angeles, California
  • R. Ischebeck
    SLAC, Menlo Park, California
  • C. Joshi
    UCLA, Los Angeles, California
  Funding: This work was supported by the Department of Energy contract DE-FG02-92-ER40745

A new approach for positron acceleration in non-linear plasma wakefields driven by electron beams is presented. Positrons can be produced by colliding an electron beam with a thin foil target embedded in the plasma. Integration of positron production and acceleration in one stage is realized by a single relativistic, intense electron beam. Simulations with the parameters of the proposed SABER facility at SLAC suggest that this concept could be tested there.

THPMN042 Design of a 200keV High Pulse Current Electron Beam Facility 2811
  • G. Feng, Y. Hong, Y. J. Pei, X. Wang
    USTC/NSRL, Hefei, Anhui
  In the paper, design of a 200keV high pulse current electron beam facility is introduced, which is used to generate plasma by interaction between electron beam and gas. Physical parameters of the beam have been selected to satisfy the plasma experiment's need. LaB6 is chosen as cathode because of its high efficient emission and long lifetime. Temperature distribution simulation in the facility has been finished with I-deas code. Because the maximum working temperature in the system is 2400°C, grid is made of heat-resistant metal Mo. In order to get high pulse current and line shaping electron beam, shape of electrodes has been optimized. Electric field distribution in the system and process of electron beam emission have been simulated with opera-3d, which considering space charge effects. Ceramic flange's electrics and mechanics properties have also been analyzed. Metal foil window is made of titanium with 40μm thickness. Relationship between initial energy and energy loss of the electron beam has been obtained by MC simulation during passing through the window. Making of the facility has been finished and some parameters have been measured through testing experiments.  
THPAN055 Theoretical Study of Medium Emittance Lattice at HLS 3351
  • H. Hao, G. Feng, W. Li, L. Wang, X. Wang, H. Xu
    USTC/NSRL, Hefei, Anhui
  • S. C. Zhang
    USTC, Hefei, Anhui
  Funding: Supported by National Natural Science Foundation of China, No. 10175062 & No.17175100

A method of injection analysis of small electron storage ring is introduced, and several medium emittance lattices are proposed. By analyzing the injection, working point of the lattice is selected at the vicinity of half integer resonance lines, and emittance is around 60nmrad, the linear and nonlinear properties can be satisfied for injection and store.

LIU Zu-Ping, Li Wei-Min. Progress of the NSRL Phase Two Project. In proceedings of the Second Asia Particle Accelerator Conference, Beijing, China, 2001, 235-238