/******************************************************************************* * * McStas, neutron ray-tracing package * Copyright (C) 1997-2008, All rights reserved * Risoe National Laboratory, Roskilde, Denmark * Institut Laue Langevin, Grenoble, France * * Instrument: Test_absorption_image * * %Identification * Written by: Mads Bertelsen * Date: September 2015 * Origin: University of Copenhagen * %INSTRUMENT_SITE: Tests_union * * Image of cryostat with sample * * %Description * Simple test instrument showing absorption image of a cryostat with vanadium * sample using the Union components. * * %Test: stick_displacement=0 Detector: screen_I=0.00925 * * %Parameters * stick_displacement: [m] Displacement of sample stick * * %End *******************************************************************************/ DEFINE INSTRUMENT Test_absorption_image(stick_displacement=0) DECLARE %{ %} TRACE COMPONENT init = Union_init() AT (0,0,0) ABSOLUTE COMPONENT Vanadium_incoherent = Incoherent_process(sigma=2*5.08,packing_factor=1,unit_cell_volume=27.66) AT (0,0,0) ABSOLUTE COMPONENT Vanadium = Union_make_material(my_absorption=2*5.08*100/27.66,process_string="Vanadium_incoherent") AT (0,0,0) ABSOLUTE COMPONENT Al_incoherent = Incoherent_process(sigma=4*0.0082,packing_factor=1,unit_cell_volume=66.4) //,interact_fraction=0.8) AT (0,0,0) ABSOLUTE COMPONENT Al_powder = Powder_process(reflections="Al.laz") AT (0,0,0) ABSOLUTE COMPONENT Al = Union_make_material(my_absorption=100*4*0.231/66.4) AT (0,0,0) ABSOLUTE COMPONENT Absorber_incoherent = Incoherent_process(sigma=2.2,packing_factor=1,unit_cell_volume=13.827) AT (0,0,0) ABSOLUTE COMPONENT Absorber = Union_make_material(my_absorption=1000,absorber=1) AT (0,0,0) ABSOLUTE COMPONENT a1 = Progress_bar() AT (0,0,0) ABSOLUTE COMPONENT source = Source_div( xwidth=0.45, yheight=1.1,focus_aw=0.1, focus_ah=0.1, E0 = 10, dE = 0) AT (0,0.35,0) RELATIVE a1 ROTATED (0,0,0) RELATIVE a1 // Sample position COMPONENT beam_center = Arm() AT (0,0,1.4) RELATIVE a1 ROTATED (0,0,0) RELATIVE a1 COMPONENT drum_center = Arm() AT (0,0.38,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 1 COMPONENT cryostat_mountin_plate = Union_cylinder(radius=0.12,yheight=0.01,priority=7,material_string="Al") AT (0,-0.103,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 2 COMPONENT cryostat_drum_walls = Union_cylinder(radius=0.2,yheight=0.57,priority=8,material_string="Al") AT (0,0,0) RELATIVE drum_center ROTATED (0,0,0) RELATIVE drum_center // 3 COMPONENT cryostat_drum_vacuum = Union_cylinder(radius=0.19,yheight=0.55,priority=9,material_string="Vacuum") AT (0,0,0) RELATIVE drum_center ROTATED (0,0,0) RELATIVE drum_center // 4 COMPONENT outer_cryostat_wall = Union_cylinder(radius=0.1,yheight=0.2,priority=10,material_string="Al") AT (0,0,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 5 COMPONENT outer_cryostat_vacuum = Union_cylinder(radius=0.09,yheight=0.2,priority=11,material_string="Vacuum") AT (0,0.01,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 6 COMPONENT inner_cryostat_wall = Union_cylinder(radius=0.06,yheight=0.16,priority=12,material_string="Al") AT (0,0.01,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 7 COMPONENT inner_cryostat_vacuum = Union_cylinder(radius=0.05,yheight=0.15,priority=13,material_string="Vacuum") AT (0,0.01,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 8 COMPONENT sample_stick_walls = Union_cylinder(radius=0.04,yheight=0.605,priority=14,material_string="Al") AT (0,0.39,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center // 9 COMPONENT sample_stick_vacuum = Union_cylinder(radius=0.035,yheight=0.64,priority=15,material_string="Vacuum") AT (0,0.4,0) RELATIVE beam_center ROTATED (0,0,0) RELATIVE beam_center COMPONENT sample_rod_bottom = Arm() AT (0,0.05+stick_displacement,0) RELATIVE beam_center ROTATED (0,45,0) RELATIVE beam_center // 10 COMPONENT sample_rod = Union_cylinder(radius=0.0075,yheight=0.7,priority=25,material_string="Al") AT (0,0.35,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 11 COMPONENT sample_rod_collar_1 = Union_cylinder(radius=0.034,yheight=0.02,priority=17,material_string="Al") AT (0,0.048,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 12 COMPONENT sample_rod_collar_2 = Union_cylinder(radius=0.034,yheight=0.02,priority=18,material_string="Al") AT (0,0.14,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 13 COMPONENT sample_rod_collar_3 = Union_cylinder(radius=0.034,yheight=0.02,priority=19,material_string="Al") AT (0,0.34,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 14 COMPONENT sample_rod_collar_4 = Union_cylinder(radius=0.034,yheight=0.02,priority=20,material_string="Al") AT (0,0.635,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 15 COMPONENT sample_rod_collar_1_vacuum = Union_cylinder(radius=0.03,yheight=0.016,priority=21,material_string="Vacuum") AT (0,0.048-0.005,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 16 COMPONENT sample_rod_collar_2_vacuum = Union_cylinder(radius=0.03,yheight=0.016,priority=22,material_string="Vacuum") AT (0,0.14-0.005,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 17 COMPONENT sample_rod_collar_3_vacuum = Union_cylinder(radius=0.03,yheight=0.016,priority=23,material_string="Vacuum") AT (0,0.34-0.005,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 18 COMPONENT sample_rod_collar_4_vacuum = Union_cylinder(radius=0.03,yheight=0.016,priority=24,material_string="Vacuum") AT (0,0.635-0.005,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 19 COMPONENT sample_holder1 = Union_box(xwidth=0.01,yheight=0.035,zdepth=0.002,priority=35,material_string="Absorber") AT (0,-0.014+0.02,0) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 20 COMPONENT sample_holder2 = Union_box(xwidth=0.009,yheight=0.002,zdepth=0.015,priority=36,material_string="Absorber") AT (0,0.02+-0.014-0.01501+0.0001-0.004,0.0075-0.003*0.5) RELATIVE sample_rod_bottom ROTATED (10,0,0) RELATIVE sample_rod_bottom // 21 COMPONENT sample_holder3 = Union_box(xwidth=0.01,yheight=0.05,zdepth=0.002,priority=37,material_string="Absorber") AT (0,0.02-0.014-0.01501-0.004+0.002*0.5-0.025+0.00001-0.001,0.015-0.003) RELATIVE sample_rod_bottom ROTATED (0,0,0) RELATIVE sample_rod_bottom // 22 COMPONENT sample = Union_cylinder(radius=0.008,yheight=0.042,priority=38,material_string="Vanadium") AT (0,-0.01,-0.011) RELATIVE sample_holder3 ROTATED (-7,0,32) RELATIVE sample_holder3 COMPONENT test_sample = Union_master() AT(0,0,0) RELATIVE beam_center ROTATED(0,0,0) RELATIVE beam_center COMPONENT screen = PSD_monitor( xwidth=0.4,ymin=-0.15,ymax=0.85, nx=500,ny=1200,filename="absoprtion_picture.dat",restore_neutron=1) AT (0,0,2) RELATIVE a1 COMPONENT stop = Union_stop() AT (0,0,0) ABSOLUTE END