/******************************************************************************* * McXtrace instrument definition URL=http://www.mcxtrace.org * * Instrument: MAXII_711 * * %Identification * Written by: Erik B Knudsen (erkn@fysik.dtu.dk) * Date: Sep 2013 * Origin: DTU Physics * Version: 1.0 * %INSTRUMENT_SITE: MAXII * * Powder diffraction beamline * * %Description * A simple beamline setup consisting of a single focusing mirror, * a monochromator, and a four-circle goniometer at the sample stage. * * %Example: MAXII_711.instr R=-100 tth=28 dphi=30 -n1e7 Detector: mono_exit_psd_I=5.1609e-06 * * %Parameters * R: [m] Radius of curvature of the focusing mirror. N.b. a negative curvature simply means the mirror curves towards negative x * phi_mirror: [m] Set angle of incidence of the focusing mirror * phi_mono: [deg] Set angle of incidence of Monochromator crystal. * ome: [deg] 1st rotation of four circle, around Y. * chi: [deg] 2nd rotation of four circle, around X. * phi: [deg] 3rd rotation of four circle, around Y'. * tth: [deg] 4th rotation of four circle, i.e. detector arm. Around Y. * * %End *******************************************************************************/ /* Change name of instrument and input parameters with default values */ DEFINE INSTRUMENT MAXII_711(R=-100,phi_mirror=3,phi_mono=9.25, chi=0, ome=0,phi=0,tth=0, dphi=160) /* The DECLARE section allows us to declare variables or small */ /* functions in C syntax. These may be used in the whole instrument. */ DECLARE %{ double lambda0=1; double dlambda=0.05; %} /* 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_gaussian( sig_x = 3655.04e-6, sig_y = 160.2e-6, sigPr_x = 4802.92e-6, sigPr_y = 204.129e-6, lambda0 = lambda0, dlambda = dlambda, focus_xw=1e-3, focus_yh=1e-3, dist=5) AT (0, 0, 0) RELATIVE Origin COMPONENT source_mon = PSD_monitor( filename = "source_mon.dat", restore_xray=1,xwidth = 2e-2, yheight = 1e-2) AT (0, 0, 1) RELATIVE source COMPONENT slit0 = Slit( xwidth=1e-3, yheight=1e-3) AT(0,0,5) RELATIVE source COMPONENT mirror_mount = Arm() AT(0,0,10) RELATIVE source ROTATED (0,0,-90) RELATIVE source COMPONENT mirror = Mirror_curved( coating = "Pt.txt", radius = R, length = 1.2, width = 0.1) AT (0, 0, 0) RELATIVE mirror_mount ROTATED (0, -phi_mirror, 0) RELATIVE mirror_mount COMPONENT mirror_exit_0 = Arm() AT (0,0,0) RELATIVE mirror ROTATED (0,-phi_mirror,0) RELATIVE mirror COMPONENT mirror_exit = Arm() AT(0,0,0) RELATIVE mirror ROTATED (0,0,90) RELATIVE mirror_exit_0 COMPONENT mirror_exit_lmon= L_monitor( filename="mi_lmon.dat",xwidth=0.2, yheight=0.2, Lmin=lambda0-dlambda-0.1, Lmax=lambda0+dlambda+0.1, nL=200) AT(0,0,1) RELATIVE mirror_exit COMPONENT mirror_exit_psd = PSD_monitor( filename="mi_psd.dat", xwidth=0.02, yheight=0.02) AT (0,0,0.001) RELATIVE PREVIOUS //COMPONENT be_window = Filter( // xwidth = 0.1, yheight = 0.1, zdepth = 100e-6) // AT (0, 0, 2.5) RELATIVE mirror_exit COMPONENT slit_main = Slit( xwidth = 1e-2, yheight = 1e-2) AT (0, 0, 3.5) RELATIVE mirror_exit COMPONENT mono_mount = Arm() AT( 0,0,5) RELATIVE mirror_exit ROTATED (0,0,90) RELATIVE mirror_exit //COMPONENT monochromator = Arm() COMPONENT monochromator = Perfect_crystal( length = 30e-2, width = 5e-2, alpha = 0) AT (0, 0, 0) RELATIVE mono_mount ROTATED (phi_mono,0,0) RELATIVE mono_mount COMPONENT mono_exit_0 = Arm() AT(0,0,0) RELATIVE monochromator ROTATED (phi_mono,0,0) RELATIVE monochromator COMPONENT mono_exit = Arm() AT(0,0,0) RELATIVE mono_exit_0 ROTATED (0,0,-90) RELATIVE mono_exit_0 COMPONENT mono_exit_lmon= L_monitor( filename="me_lmon.dat",xwidth=0.01, yheight=0.01, Lmin=lambda0-dlambda-0.1, Lmax=lambda0+dlambda+0.1, nL=200) AT(0,0,1) RELATIVE mono_exit COMPONENT mono_exit_psd = PSD_monitor( filename="me_psd.dat", xwidth=0.01, yheight=0.01) AT (0,0,0.001) RELATIVE PREVIOUS COMPONENT slit_saxs =Slit( xwidth=1e-3,yheight=1e-3) AT(0,0,3.85) RELATIVE mono_exit COMPONENT slit_saxs2=COPY(slit_saxs)() AT(0,0,.45) RELATIVE slit_saxs COMPONENT sample_mon = PSD_monitor( filename = "sample_mon.dat", restore_xray=1, xwidth = 1e-2, yheight = 1e-2) AT (0, 0, 1.02) RELATIVE slit_saxs2 COMPONENT sample_rot_ome = Arm() AT(0,0,0)RELATIVE sample_mon ROTATED (0,ome,0) RELATIVE sample_mon COMPONENT sample_rot_chi = Arm() AT(0,0,0)RELATIVE sample_rot_ome ROTATED (chi,0,0) RELATIVE sample_rot_ome COMPONENT sample_rot_phi = Arm() AT(0,0,0)RELATIVE sample_rot_chi ROTATED (0,phi,0) RELATIVE sample_rot_chi COMPONENT sample = PowderN( radius=0.0010,yheight=1e-3,reflections="C_diamond.laz",material="C.txt",format={17,6,0,0,0,0,0,13},d_phi=dphi, barns=1,p_inc=0 ) AT(0,0,0) RELATIVE sample_rot_phi EXTEND %{ if(!SCATTERED)ABSORB; %} COMPONENT psd4pi = PSD_monitor_4PI( radius=0.1,nx=500,ny=200, restore_xray=1,filename="psd4pi") AT(0,0,0) RELATIVE sample_mon COMPONENT bigpsd = PSD_monitor( xwidth=1,yheight=1,nx=512,ny=512,restore_xray=1, filename="bigpsd") AT(0,0,0.333) RELATIVE sample_mon COMPONENT bigradial = PSD_monitor( radius=0.8,nr=128,restore_xray=1, filename="bigradial") AT(0,0,0.333) RELATIVE sample_mon COMPONENT rot_tt = Arm() AT(0,0,0) RELATIVE sample_mon ROTATED (0,tth,0) RELATIVE sample_mon COMPONENT detector = PSD_monitor( xwidth=165e-3, yheight=165e-3, filename="psd" ) AT(0,0,.333) RELATIVE rot_tt /* 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