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/*******************************************************************************
*
* McStas, neutron ray-tracing package
* Copyright 1997-2002, All rights reserved
* Risoe National Laboratory, Roskilde, Denmark
* Institut Laue Langevin, Grenoble, France
*
* Component: PSD_TOF_monitor
*
* %I
* Written by: Peter Willendrup, derived from PSD_monitor by Kim Lefmann
* Date: Feb 3, 1998
* Origin: Risoe
*
* Position-sensitive monitor with TOF slices.
*
* %D
* An (nx times ny) pixel PSD monitor with nt time bins pr pixel.
*
* Will output nt PSD images plus 1 integrated image.
*
* Example: PSD_TOF_monitor(xmin=-0.1, xmax=0.1, ymin=-0.1, ymax=0.1, nx=90, ny=90, tmin=4000, tmax=7000, nt=3, filename="Output")
*
* %P
* INPUT PARAMETERS:
*
* xmin: [m] Lower x bound of detector opening
* xmax: [m] Upper x bound of detector opening
* ymin: [m] Lower y bound of detector opening
* ymax: [m] Upper y bound of detector opening
* tmin: [mu-s] Lower time bound
* tmax: [mu-s] Upper time bound
* xwidth: [m] Width/diameter of detector (x). Overrides xmin, xmax
* yheight: [m] Height of detector (y). Overrides ymin, ymax
* nx: [1] Number of pixel columns
* ny: [1] Number of pixel rows
* nt: [1] Number of TOF bins
* filename: [string] Name of file in which to store the detector image
* restore_neutron: [1] If set, the monitor does not influence the neutron state
* nowritefile: [1] If set, monitor will skip writing to disk
*
* CALCULATED PARAMETERS:
*
* PSD_N: [] Array of neutron counts
* PSD_p: [] Array of neutron weight counts
* PSD_p2: [] Array of second moments
*
* %E
*******************************************************************************/
DEFINE COMPONENT PSD_TOF_monitor
SETTING PARAMETERS (int nx=90, int ny=90, int nt=10, int restore_neutron=0,
string filename=0, xmin=0, xmax=0, ymin=0, ymax=0, xwidth=0, yheight=0,
tmin=0, tmax=0, int nowritefile=0)
DECLARE
%{
DArray3d PSD_N;
DArray3d PSD_p;
DArray3d PSD_p2;
DArray2d PSD_Ns;
DArray2d PSD_ps;
DArray2d PSD_p2s;
%}
INITIALIZE
%{
if (xwidth > 0) { xmax = xwidth/2; xmin = -xmax; }
if (yheight > 0) { ymax = yheight/2; ymin = -ymax; }
if ((xmin >= xmax) || (ymin >= ymax)) {
printf("PSD_TOF_monitor: %s: Null detection area !\n"
"ERROR (xwidth,yheight,xmin,xmax,ymin,ymax). Exiting",
NAME_CURRENT_COMP);
exit(0);
}
if (tmin >= tmax) {
printf("PSD_TOF_monitor: %s: Unmeaningful TOF definition!\n",
NAME_CURRENT_COMP);
exit(0);
}
PSD_N = create_darr3d(nt, nx, ny);
PSD_p = create_darr3d(nt, nx, ny);
PSD_p2 = create_darr3d(nt, nx, ny);
PSD_Ns = create_darr2d(nx, ny);
PSD_ps = create_darr2d(nx, ny);
PSD_p2s = create_darr2d(nx, ny);
// Use instance name for monitor output if no input was given
if (!strcmp(filename,"\0")) sprintf(filename,"%s",NAME_CURRENT_COMP);
%}
TRACE
%{
int i, j, k;
PROP_Z0;
if (x>xmin && x<xmax && y>ymin && y<ymax && (1E6*t)>tmin && (1E6*t)<tmax)
{
i = floor((x - xmin)*nx/(xmax - xmin));
j = floor((y - ymin)*ny/(ymax - ymin));
k = floor((1E6*t - tmin)*nt/(tmax - tmin));
double p2 = p*p;
#pragma acc atomic
PSD_N[k][i][j] = PSD_N[k][i][j]+1;
#pragma acc atomic
PSD_p[k][i][j] = PSD_p[k][i][j]+p;
#pragma acc atomic
PSD_p2[k][i][j] = PSD_p2[k][i][j]+p2;
#pragma acc atomic
PSD_Ns[i][j] = PSD_Ns[i][j]+1;
#pragma acc atomic
PSD_ps[i][j] = PSD_ps[i][j]+p;
#pragma acc atomic
PSD_p2s[i][j] = PSD_p2s[i][j]+p2;
SCATTER;
}
if (restore_neutron) {
RESTORE_NEUTRON(INDEX_CURRENT_COMP, x, y, z, vx, vy, vz, t, sx, sy, sz, p);
}
%}
SAVE
%{
if (!nowritefile) {
int kk;
char ff[256];
char tt[256];
sprintf(ff, "%s_Sum",filename);
DETECTOR_OUT_2D(
"PSD monitor TOF Sum",
"X position [cm]",
"Y position [cm]",
xmin*100.0, xmax*100.0, ymin*100.0, ymax*100.0,
nx, ny,
&PSD_Ns[0][0],&PSD_ps[0][0],&PSD_p2s[0][0],
ff);
for (kk=0; kk<nt; kk++) {
sprintf(ff, "%s_%i",filename,kk);
sprintf(tt, "PSD monitor TOF slice %i ~ %g mu-s",kk,kk*(tmax-tmin)/nt);
DETECTOR_OUT_2D(
tt,
"X position [cm]",
"Y position [cm]",
xmin*100.0, xmax*100.0, ymin*100.0, ymax*100.0,
nx, ny,
&PSD_N[kk][0][0],&PSD_p[kk][0][0],&PSD_p2[kk][0][0],
ff);
}
}
%}
FINALLY
%{
destroy_darr3d(PSD_N);
destroy_darr3d(PSD_p);
destroy_darr3d(PSD_p2);
destroy_darr2d(PSD_Ns);
destroy_darr2d(PSD_ps);
destroy_darr2d(PSD_p2s);
%}
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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