/*******************************************************************************
*         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
* %INSTRUMENT_SITE: Templates
*
* Instrument short description
*
* %Description
* Instrument longer description (type, elements, usage...)
*
* Example: mcrun test.instr <parameters=values>
*
* once your instrument is written and functional:
* - replace INSTRUMENT_SITE entry above with your Institution name as a single word
* - rename the instrument name after DEFINE INSTRUMENT below
* - update the parameter help in the following Parameters section
* - update the instrument description, and better add a usage example with a
*     sensible parameter set.
*
* %Parameters
*
* %Link
* A reference/HTML link for more information
*
* %End
*******************************************************************************/
DEFINE INSTRUMENT test(delay=0,phase=0,nu=1,in=1,dz=0.001,theta_0=10, nt=10, tmin=0, tmax=1)

/* 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_simple = Source_simple(
    radius=0.3, 
    focus_xw=0.3, 
    focus_yh=0.3, 
    lambda0=1, 
    dlambda=0.01, 
    target_index=1)
AT (0, 0, 0) RELATIVE PREVIOUS

COMPONENT circular_slit = Slit(radius=0.15)
AT (0, 0, 1) RELATIVE PREVIOUS

COMPONENT psd_monitor = PSD_monitor(
    filename="incoming", 
    xwidth=0.35, 
    yheight=0.35,restore_neutron=0)
AT (0, 0, dz) RELATIVE PREVIOUS
EXTEND %{
	t=rand01();
%}

COMPONENT incoming=Event_monitor_simple(nevents=1e6)
AT (0,0,0) RELATIVE PREVIOUS

COMPONENT diskchopper = DiskChopper(
    theta_0=10, 
    radius=0.15, 
    yheight=0.15, 
    nu=nu, 
    nslit=1, 
    delay=delay, 
    phase=phase)
WHEN (in) AT (0, 0.075, dz) RELATIVE PREVIOUS

COMPONENT outgoing=Event_monitor_simple(nevents=1e6)
AT (0,0,0) RELATIVE PREVIOUS

COMPONENT psd_tof_monitor = PSD_TOF_monitor(
    nt=nt, 
    filename="slices", 
    xwidth=0.35, 
    yheight=0.35, 
    tmin=tmin*1e6,  // conversions tu mu-s
    tmax=tmax*1e6)
AT (0, 0, 2*dz) RELATIVE psd_monitor



/* 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