/* Change name of instrument and input parameters with default values */
DEFINE INSTRUMENT test(Par1=1)

/* The DECLARE section allows us to declare variables or  small      */
/* functions in C syntax. These may be used in the whole instrument. */
DECLARE
%{
  void FeCoVupRef(double q, double *par, double *r) {
    
    double p1  = 0.99;
    
    if (q >= 0.0218 && q<0.0559){
      p1 *= -6.6785*q+1.1001;
    } else if (q >= 0.0559 && q<0.061){
      p1 *= 6700.8*q*q-959.44*q+33.616;
    } else if (q >= 0.061){
      p1 *= 8.55345e-29*pow(q,-22.157);
    }
    
    if (p1<1.0e-8){
      *r=0.0;
      return;
    } else if(p1 > 0.99) {
      p1=0.99;
    }
    *r=p1;
 
    return;
  }
  
  void FeCoVdownRef(double q, double *par, double *r) {

    double p1  = 0.99;
    
    if (q >= 0.0022 && q<0.02){
      p1 *= 5.3584e-5*pow(q,-1.5151);
    } else if (q >= 0.02 && q<0.061){
      p1 *= 4.8242e-4*pow(q,-0.94321);
    }else if (q >= 0.061){
      p1 *= 1.62308e-31*pow(q,23.6012);
    }
    
    if (p1<1.0e-8){
      *r=0.0;
      return;
    } else if(p1 > 0.99) {
      p1=0.99;
    }

    *r=p1;

    return;
  }

%}

/* The INITIALIZE section is executed when the simulation starts     */
/* (C code). You may use them as component parameter values.         */
INITIALIZE
%{
%}

/* Here comes the TRACE section, where the actual      */
/* instrument is defined as a sequence of components.  */
TRACE

/* The Arm() class component defines reference points and orientations  */
/* in 3D space. Every component instance must have a unique name. Here, */
/* Origin is used. This Arm() component is set to define the origin of  */
/* our global coordinate system (AT (0,0,0) ABSOLUTE). It may be used   */
/* for further RELATIVE reference, Other useful keywords are : ROTATED  */
/* EXTEND GROUP PREVIOUS. Also think about adding a neutron source !    */
/* Progress_bar is an Arm displaying simulation progress.               */
COMPONENT Origin = Progress_bar()
  AT (0,0,0) ABSOLUTE

COMPONENT source1 = Source_simple(
    height = 0.1, width = 0.1, dist = 4.0, xw = 0.03, yh = 0.03,
    Lambda0 = 7.5, dLambda = 7.0)
  AT (0.0, 0.0, 0.001) RELATIVE Origin

COMPONENT polariser1 = 
Pol_bender(xw = 0.03, yh = 0.03, length = 3.5, radius = 100000.0,
	   rTopUpFunc = StdReflecFunc, rTopDownFunc = StdReflecFunc,
	   rTopUpPar = {0.99, 0.0219, 6.07, 1.0, 0.003},
	   rTopDownPar = rTopUpPar,
	   rBotUpFunc = rTopUpFunc, rBotDownFunc = rTopDownFunc,
	   rBotUpPar = rTopUpPar, rBotDownPar = rTopUpPar,
	   rRightUpFunc = FeCoVupRef, rRightDownFunc = FeCoVdownRef, 
	   rRightUpPar = {1.0}, rRightDownPar = {1.0}, 
	   rLeftUpFunc = rRightUpFunc, rLeftDownFunc = rRightDownFunc,
	   rLeftUpPar = rRightUpPar, rLeftDownPar = rRightDownPar,
	    nslits = 1, wspacer = 0.0005, drawOption = 3,    //drawOption (1-3)
	   debug=0) 
     AT (0.0, 0.0, 4.0) RELATIVE Origin

COMPONENT psd1 = PSD_monitor(
    nx = 100, ny = 100, filename = "PSD1.dat", xwidth = 0.1,
    yheight = 0.1)
  AT (0.0 , 0.0, 8.0) RELATIVE Origin

COMPONENT lmon1 = L_monitor(
    nchan = 200, filename = "lmon1.dat",
    xwidth = 0.1, yheight = 0.1, Lmin = 0.0, Lmax = 15.0)
  AT (0.0, 0.0, 0.0001) RELATIVE psd1

COMPONENT polmon1 = PolLambda_monitor(
    xw = 0.1, yh = 0.1, nlam = 100, npol = 100,
    filename = "polmon1.dat", my = 1, Lmin = 0.0, Lmax = 15.0)
  AT (0.0, 0.0, 0.0001) RELATIVE lmon1

COMPONENT polmon2 = MeanPolLambda_monitor(
    xw = 0.1, yh = 0.1, nlam = 100, filename = "polmon2.dat",
    my = 1, Lmin = 0.0, Lmax = 15.0)
  AT (0.0, 0.0, 0.0001) RELATIVE polmon1


/* This section is executed when the simulation ends (C code). Other    */
/* optional sections are : SAVE                                         */
FINALLY
%{
%}
/* The END token marks the instrument definition end */
END