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/*******************************************************************************
*
* McXtrace, x-ray tracing package
* Copyright, All rights reserved
* DTU Physics, Kgs. Lyngby, Denmark
* Synchrotron SOLEIL, Saint-Aubin, France
*
* Component: TOF_monitor
*
* %Identification
* Written by: Erik B Knudsen
* Date: Aug. 2014
* Origin: British Airways
* Release: 1.2
*
* Rectangular Time-of-flight monitor.
*
* %Description
* Rectangular Time-of-flight monitor. You may either give the time-step or the
* time range.
*
* %Parameters
* INPUT PARAMETERS:
*
* xwidth: [m] Width of detector.
* yheight: [m] Height of detector.
* nt: [1] Number of time bins
* dt: [mu-s] Length of each time bin
* tmin: [mu-s] Lower time limit
* tmax: [mu-s] Upper time limit. When left as 0, use dt to compute tmax.
* filename: [str] Name of file in which to store the detector image
* restore_xray: [1] If set, the monitor does not influence the xray state
*
* CALCULATED PARAMETERS:
*
* TOF_N: Array of xray counts
* TOF_p: Array of xray weight counts
* TOF_p2: Array of second moments
*
* %End
*******************************************************************************/
DEFINE COMPONENT TOF_monitor
SETTING PARAMETERS (int nt=20, string filename=0,
xwidth=0.1, yheight=0.1, tmin=0, tmax=0, dt=1.0, restore_xray=0)
DECLARE
%{
DArray1d TOF_N;
DArray1d TOF_p;
DArray1d TOF_p2;
double t_min;
double t_max;
double delta_t;
double xmin;
double xmax;
double ymin;
double ymax;
%}
INITIALIZE
%{
int i;
xmax = xwidth/2; xmin = -xmax;
ymax = yheight/2; ymin = -ymax;
if ((xmin >= xmax) || (ymin >= ymax)) {
printf("TOF_monitor: %s: Null detection area !\n"
"ERROR (xwidth,yheight). Exiting",
NAME_CURRENT_COMP);
exit(0);
}
TOF_N = create_darr1d(nt);
TOF_p = create_darr1d(nt);
TOF_p2 = create_darr1d(nt);
if (tmax!=0)
{
t_max=tmax;
t_min=tmin;
delta_t=(t_max-t_min)/nt;
}
else
{
delta_t=dt;
t_min=0;
t_max=nt*dt+tmin;
}
// Use instance name for monitor output if no input was given
if (!strcmp(filename,"\0")) sprintf(filename,"%s",NAME_CURRENT_COMP);
%}
TRACE
%{
int i;
PROP_Z0;
if (x>xmin && x<xmax && y>ymin && y<ymax)
{
i = floor((t-t_min)/delta_t); /* Bin number */
if(i >= 0 && i < nt) {
#pragma acc atomic
TOF_N[i] = TOF_N[i] + 1;
#pragma acc atomic
TOF_p[i] = TOF_p[i] + p;
#pragma acc atomic
TOF_p2[i] = TOF_p2[i] + p*p;
SCATTER;
}
}
if (restore_xray) {
RESTORE_XRAY(INDEX_CURRENT_COMP, x, y, z, kx, ky, kz, phi, t, Ex, Ey, Ez, p);
}
%}
SAVE
%{
DETECTOR_OUT_1D(
"Time-of-flight monitor",
"Time-of-flight [s]",
"Intensity",
"t", t_min, t_max, nt,
&TOF_N[0],&TOF_p[0],&TOF_p2[0],
filename);
%}
MCDISPLAY
%{
multiline(5, (double)xmin, (double)ymin, 0.0,
(double)xmax, (double)ymin, 0.0,
(double)xmax, (double)ymax, 0.0,
(double)xmin, (double)ymax, 0.0,
(double)xmin, (double)ymin, 0.0);
%}
END
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