/******************************************************************************* * McXtrace instrument definition URL=http://www.mcxtrace.org * * Instrument: NSLS2_CHX * * %Identification * Written by: Jana Baltser * Date: March 2011 * Origin: NBI, BNL * Release: McXtrace 1.0 * Version: 0.2 * %INSTRUMENT_SITE: NSLS2 * * Coherent hard x-ray beamline @ NSLS II * * %Description * This is a lay-out of the coherent hard x-ray (CHX) beamline at NSLS-II. * Since the ray-tracing method doesn't allow to account for partial coherence of the * undulator source, the best approximation was to use the gaussian photon beam and to neglect * diffraction effects on apertures. * The choice of the source sizes along with angular divergence corresponds to the situation of * high emittance (e=0.99nm). * * * %Parameters * L: [m] Distance from the source to the SS1, secondary source aperture. * L2: [m] Position of the CRL. * L3: [m] Position of the Kinoform lens. * Energy: [keV] primary energy used at the beamline. * * %Example: NSLS2_CHX -n1e6 L=33.5 L2=35.3 L3=44 Energy=10 Detector: Det_ff_I=2.82787e+16 * * %End *******************************************************************************/ DEFINE INSTRUMENT NSLS2_CHX(L=33.5,L2=35.3,L3=44,Energy=10) DECLARE %{ const double source_h=43e-6; const double source_v=7e-6; const double div_h=22e-6; const double div_v=8.8e-6; const double slit_x=44e-6; const double slit_y=1e-3; %} INITIALIZE %{ %} TRACE COMPONENT Origin = Progress_bar() AT (0,0,0) ABSOLUTE COMPONENT Source = Source_gaussian(sig_x=source_h,sig_y=source_v,sigPr_x=div_h,sigPr_y=div_v,E0=Energy,dE=0,dist=L,flux=4e18) AT (0, 0, 0) RELATIVE Origin COMPONENT Det=PSD_monitor(filename="psd.dat",xwidth=5e-3,yheight=5e-3,restore_xray=1,nx=200,ny=200) AT (0,0,L) RELATIVE Origin COMPONENT Slit=Slit(xwidth=slit_x,yheight=slit_y) AT (0,0,10e-4) RELATIVE PREVIOUS COMPONENT Det1=PSD_monitor(filename="psd1.dat",xwidth=.4e-3,yheight=2e-3,restore_xray=1,nx=200,ny=200) AT (0,0,L2-1e-3) RELATIVE Origin COMPONENT CRL=Lens_parab_Cyl(r=.5e-3,yheight=1e-3,xwidth=1e-3,d=.05e-3,N=9, material_datafile="Be.txt") AT (0,0,L2) RELATIVE Origin COMPONENT Det_f=PSD_monitor(filename="psd_f.dat",xwidth=.4e-3,yheight=.4e-3, restore_xray=1, nx=200, ny=200) AT (0,0,43.98) RELATIVE Origin COMPONENT Kinoform=Lens_parab_Cyl(r=.5e-3,yheight=1.3e-3,xwidth=1.3e-3,d=.1e-3,N=21, material_datafile="Be.txt") AT (0,0,L3) RELATIVE Origin ROTATED (0,0 ,90) RELATIVE Origin COMPONENT Det_ff=PSD_monitor(filename="psd_ff.dat",xwidth=.08e-3,yheight=.08e-3, restore_xray=1, nx=200, ny=200) AT (0,0,48.5) RELATIVE Origin END