{
  "FILE_FORMAT": 1, 
  "FILE_HEADER_LINES": 11, 
  "X1_FACTOR": 0.001, 
  "Y1_FACTOR": -1e-06,
  "YEAR_FABRICATION": null, 
  "SURFACE_SHAPE": "elliptical", 
  "FUNCTION": "plane elliptical mirror Ell2 for beamline P04 at PETRA-III. energy range: 100-3000eV", 
  "LENGTH": 0.430, 
  "WIDTH": null,
  "THICK": null,
  "LENGTH_OPTICAL": 0.430, 
  "SUBSTRATE": null, 
  "COATING": null, 
  "FACILITY": "Helmholtz Zentrum Berlin", 
  "INSTRUMENT": null, 
  "POLISHING": null, 
  "ENVIRONMENT": null, 
  "SCAN_DATE": null, 
  "PLOT_TITLE_X1": "x(mm)", 
  "PLOT_TITLE_Y1": "Slope (urad)",
  "CALC_HEIGHT_RMS": null,
  "CALC_HEIGHT_RMS_FACTOR": null, 
  "CALC_SLOPE_RMS": 0.5, 
  "CALC_SLOPE_RMS_FACTOR": 1e-6,
  "ELLIPSE_DESIGN_P": 7.5,
  "ELLIPSE_DESIGN_Q": 2.5,
  "ELLIPSE_DESIGN_THETA": 10.4e-3,
  "USER_REFERENCE": "design parameter of ellipse: entrance arm: 7500mm; exit arm: 2500mm; angle of incidence 0.6deg",
  "USER_ADDED_BY": "Frank Siewert",
  "USER_EXAMPLE": "NOTE THAT THIS SLOPES PROFILE HAS BEEN MULTIPLIED BY -1 (see Y1_FACTOR)"
}