/******************************************************************************* * * 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 * * OUTPUT 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 DEFINITION PARAMETERS () SETTING PARAMETERS (nx=90, ny=90, nt=10, 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) OUTPUT PARAMETERS () DECLARE %{ DArray3d PSD_N; DArray3d PSD_p; DArray3d PSD_p2; DArray2d PSD_Ns; DArray2d PSD_ps; DArray2d PSD_p2s; %} INITIALIZE %{ int i,j,k; 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); for (i=0; ixmin && xymin && ytmin && (1E6*t)