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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: Flex_monitor_1D
*
* %I
* Written by: Erik B Knudsen & Peter Willendrup
* Date: Oct '20
* Origin: DTU Physics
*
* Flexible monitor.
*
* %D
* A square 1D single monitor that measures intensity (or something else) as a function of some variable or parameter.
*
* Example: Flex_monitor_1D(nU=20, filename="Output", ustring="x", Umin=-.1, Umax=.1)
*
* %P
* INPUT PARAMETERS:
*
* Umin: [] Minimum U to detect
* Umax: [] Maximum U to detect
* nU: [1] Number of U channels
* 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
* uid: [1] Integer index of uservar to be monitored. Overrides ustring.
* ustring: [string] Name of variable (user or neutron state parameter as a string) to be monitored.
* signal: [string] Name of variable to be used as an additive signal to be monitored. Default is intensity.
* nowritefile: [1] Flag to indicate if monitor should not save any data.
*
* CALCULATED PARAMETERS:
*
* U_N: [] Array of neutron counts
* U_p: [] Array of neutron weight counts
* U_p2: [] Array of second moments
*
* %E
*******************************************************************************/
DEFINE COMPONENT Flex_monitor_1D
SETTING PARAMETERS (int nU=20, string filename=0,
Umin, Umax, uid=-1, string ustring="", int restore_neutron=0, string signal="p", int nowritefile=0)
/* Neutron parameters: (x,y,z,vx,vy,vz,t,sx,sy,sz,p) */
DECLARE
%{
DArray1d U_N;
DArray1d U_p;
DArray1d U_p2;
char username[128];
char signalname[128];
%}
INITIALIZE
%{
U_N = create_darr1d(nU);
U_p = create_darr1d(nU);
U_p2 = create_darr1d(nU);
if(uid!=-1){
snprintf(username,127,"uservar%d",uid);
}else{
snprintf(username,127,"%s",ustring);
}
snprintf(signalname,127,"%s",signal);
// Use instance name for monitor output if no input was given
if (!strcmp(filename,"\0")) sprintf(filename,"%s",NAME_CURRENT_COMP);
%}
TRACE
%{
double U;
int suc;
if(uid!=-1){
U = particle_getuservar_byid(_particle,uid,&suc);
}else{
U = particle_getvar(_particle,ustring,&suc);
}
int i = floor((U-Umin)*nU/(Umax-Umin));
if(!suc && i >= 0 && i < nU)
{
double pp=particle_getvar(_particle,signal,&suc);
double p2 = pp*pp;
#pragma acc atomic
U_N[i] = U_N[i] +1;
#pragma acc atomic
U_p[i] = U_p[i] + pp;
#pragma acc atomic
U_p2[i] = U_p2[i] + p2;
SCATTER;
}
if (restore_neutron) {
RESTORE_NEUTRON(INDEX_CURRENT_COMP, x, y, z, vx, vy, vz, t, sx, sy, sz, p);
}
%}
SAVE
%{
if (!nowritefile) {
DETECTOR_OUT_1D(
"Flex monitor 1D",
username,
signalname,
username, Umin, Umax, nU,
&U_N[0],&U_p[0],&U_p2[0],
filename);
}
%}
FINALLY
%{
destroy_darr1d(U_N);
destroy_darr1d(U_p);
destroy_darr1d(U_p2);
%}
MCDISPLAY
%{
%}
END
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