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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: Monitor_4PI
*
* %I
* Written by: Kim Lefmann and Kristian Nielsen
* Date: April 17, 1998
* Version: $Revision$
* Origin: Risoe
* Release: McStas 1.6
*
* Monitor that detects ALL non-absorbed neutrons.
*
* Example: Monitor_4PI()
*
* %D
* Counts ALL neutrons that propagate this far in the instrument, regardless
* of origin or direction. Mostly used for test purposes.
*
* %P
* INPUT PARAMETERS:
*
* (none)
*
* CALCULATED PARAMETERS:
*
* Nsum : Number of neutrons hitting
* psum : Total weight of neutrons hitting
* p2sum : Second moment of neutron weights
*
* %E
*******************************************************************************/
DEFINE COMPONENT Monitor_4PI
SETTING PARAMETERS ()
/* Neutron parameters: (x,y,z,vx,vy,vz,t,sx,sy,sz,p) */
DECLARE
%{
double Nsum;
double psum;
double p2sum;
%}
INITIALIZE
%{
Nsum = 0;
psum = 0;
p2sum = 0;
%}
TRACE
%{
double p2 = p*p;
#pragma acc atomic
Nsum = Nsum + 1;
#pragma acc atomic
psum = psum + p;
#pragma acc atomic
p2sum = p2sum + p2;
SCATTER;
%}
SAVE
%{
char full_name[1024];
sprintf(full_name, "4PI monitor %s", NAME_CURRENT_COMP);
DETECTOR_OUT_0D(full_name, Nsum, psum, p2sum);
%}
MCDISPLAY
%{
%}
END
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