/*******************************************************************************
*         McStas instrument definition URL=http://www.mcstas.org
*
* Instrument: test (rename also the example and DEFINE lines below)
*
* %Identification
* Written by: Your name (email)
* Date: Current Date
* Origin: Your institution
* Release: McStas 1.6
* Version: 0.2
* %INSTRUMENT_SITE: Institution_name_as_a_single word
*
* Instrument short description
*
* %Description
* Instrument longer description (type, elements, usage...)
*
* Example: mcrun test.instr <parameters=values>
*
* %Parameters
* Par1: [unit] Parameter1 description
*
* %Link
* A reference/HTML link for more information
*
* %End
*******************************************************************************/

/* Change name of instrument and input parameters with default values */
DEFINE INSTRUMENT test(Beta=0.25, CHECK=0)

/* The DECLARE section allows us to declare variables or  small      */
/* functions in C syntax. These may be used in the whole instrument. */
DECLARE
%{
  
%}

/* The INITIALIZE section is executed when the simulation starts     */
/* (C code). You may use them as component parameter values.         */
INITIALIZE
%{

%}

/* Here comes the TRACE section, where the actual      */
/* instrument is defined as a sequence of components.  */
TRACE

/* The Arm() class component defines reference points and orientations  */
/* in 3D space. Every component instance must have a unique name. Here, */
/* Origin is used. This Arm() component is set to define the origin of  */
/* our global coordinate system (AT (0,0,0) ABSOLUTE). It may be used   */
/* for further RELATIVE reference, Other useful keywords are : ROTATED  */
/* EXTEND GROUP PREVIOUS. Also think about adding a neutron source !    */
/* Progress_bar is an Arm displaying simulation progress.               */
COMPONENT Origin = Progress_bar()
  AT (0,0,0) ABSOLUTE


COMPONENT Source = Source_adapt(
    E0=4, dE=1,
    N_E = 128, xmin = -0.01, xmax = 0.01, ymin = -0.05,
    ymax = 0.05, dist = 10, xw = 0.1, yh = 0.1, beta=Beta)
  AT (0, 0, 0) RELATIVE Origin


COMPONENT Emon = E_monitor(
    nchan = 256, filename = "Emon.dat", xwidth = 0.2,
    yheight = 0.2, Emin = 2, Emax=6)
  AT (0, 0, 10) RELATIVE Origin

COMPONENT Lmon = L_monitor(
    nchan = 256, filename = "Lmon.dat", xwidth = 0.2,
    yheight = 0.2, Lmin = 3, Lmax = 6)
  AT (0, 0, 10.001) RELATIVE Origin


COMPONENT Powder = Powder1(
    )
  AT (0, 0, 10) RELATIVE Origin
EXTEND %{
	if (!SCATTERED) ABSORB;
%}

COMPONENT Sphere = PSD_monitor_4PI(
    filename = "sphere.dat", radius = 1)
  AT (0, 0, 0) RELATIVE Powder

COMPONENT Checker = Adapt_check(
    source_comp = Source)
WHEN (CHECK==1) AT (0, 0, 1.1) RELATIVE Sphere

/* This section is executed when the simulation ends (C code). Other    */
/* optional sections are : SAVE                                         */
FINALLY
%{
%}
/* The END token marks the instrument definition end */
END