• High Power Laser Science and Engineering
  • Vol. 2, Issue 4, 04000e31 (2014)
Kazuhisa Nakajima*
Author Affiliations
  • Center for Relativistic Laser Science, Institute for Basic Science (IBS), Gwangju 500-712, Republic of Korea
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    DOI: 10.1017/hpl.2014.37 Cite this Article Set citation alerts
    Kazuhisa Nakajima. Conceptual designs of a laser plasma accelerator-based EUV-FEL and an all-optical Gamma-beam source[J]. High Power Laser Science and Engineering, 2014, 2(4): 04000e31 Copy Citation Text show less
    Schematic of the EUV light source based on a compact FEL driven by a fiber laser-based plasma accelerator.
    Fig. 1. Schematic of the EUV light source based on a compact FEL driven by a fiber laser-based plasma accelerator.
    Schematic illustration of the Gamma-beam source based on inverse Compton scattering off relativistic electron beams driven by a laser plasma accelerator.
    Fig. 2. Schematic illustration of the Gamma-beam source based on inverse Compton scattering off relativistic electron beams driven by a laser plasma accelerator.
    CaseABCDE
    Laser
    Laser wavelength ()11111
    Average laser power (MW)1.631.241.191.221.27
    Repetition rate (MHz)1.220.5150.3150.2230.168
    Laser energy per pulse (J)1.342.403.795.527.57
    Peak power (TW)2943597593
    Pulse duration (fs)4656657382
    Matched spot radius ()1923273034
    Laser plasma accelerator
    Electron beam energy (MeV)2434276599371257
    Plasma density ()8.35.64.23.22.6
    Accelerator length (mm)18325174102
    Charge per bunch (nC)0.50.50.50.50.5
    Field reduction factor 0.2230.2670.3020.3250.364
    Bunch duration (fs)1010101010
    Energy spread (%)1.11.51.61.61.6
    Transverse beam size ()2525252525
    Peak current (kA)5050505050
    Average beam power (kW)148110104104105
    Efficiency of laser to beam (%)9.18.98.78.58.3
    Free electron laser
    Undulator period (mm)510152025
    Radiation wavelength (nm)13.513.513.513.513.5
    Gap (mm)12345
    Peak magnetic field (T)1.4251.4251.4251.4251.425
    Undulator parameter 0.6661.332.002.663.33
    Pierce parameter (%)1.121.511.601.601.57
    Gain length (mm)416186115146
    Saturation length (mm)499721101613551723
    Number of periods10072686869
    Spectral bandwidth (%)1.01.41.51.51.5
    R.m.s. radiation cone angle ()11697827163
    Input power (MW)0.943.035.267.489.72
    Saturated power (GW)82194317451596
    Duration of EUV pulse (fs)1010101010
    Average EUV power (kW)11111
    Efficiency of EUV generation (%)0.0610.0810.0840.0820.079
    Table 1. Parameters for laser plasma accelerator-based EUV FEL light sources.
    CaseABCDE
    Laser plasma accelerator
    Laser wavelength ()0.80.80.80.80.8
    Repetition rate (Hz)1010101010
    Laser energy per pulse (J)1.782.563.684.555.31
    Peak power (TW)4152667785
    Pulse duration (fs)4349555962
    Matched spot radius ()1820232426
    Electron beam energy (MeV)326461654802928
    Plasma density ()9.27.35.74.94.5
    Accelerator length (mm)2434506172
    Charge per bunch (nC)0.50.50.50.50.5
    Bunch duration (fs)1010101010
    Transverse beam size ()2525252525
    Compton scatter
    Photon energy (MeV)2.55101520
    Laser peak power (TW)1010101010
    Pulse duration (fs)250250250250250
    Pulse energy (J)2.52.52.52.52.5
    Laser spot radius ()2525252525
    Focused intensity ()11111
    Repetition rate (Hz)1010101010
    Luminosity ()1010101010
    Total cross section (mb)660658655653651
    Total photon flux ()6.606.586.556.536.51
    Spectral bandwidth (%)1.01.01.01.01.0
    Scattering angle within 1% BW ()313222157128111
    Cross section within 1% BW (mb)9.809.779.739.699.66
    Photon flux within 1% BW ()0.9800.9770.9730.9690.966
    Table 2. Parameters for all-optical laser plasma accelerator-based Gamma-beam sources.
    Kazuhisa Nakajima. Conceptual designs of a laser plasma accelerator-based EUV-FEL and an all-optical Gamma-beam source[J]. High Power Laser Science and Engineering, 2014, 2(4): 04000e31
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