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[ Identification  Description  Input parameters  Output parameters  Links ] The
Neutron straight guide with gravity. Can be channeled and focusing.
Waviness may be specified, as well as side chamfers (on substrate).

Name  Unit  Description  Default 

nxpsd  
filenameT  
filenameB  
filenameL  
filenameR  
w1  m  Width at the guide entry  
h1  m  Height at the guide entry  
w2  m  Width at the guide exit. If 0, use w1.  0 
h2  m  Height at the guide exit. If 0, use h1.  0 
l  m  length of guide  
R0  1  Lowangle reflectivity  0.995 
Qc  AA1  Critical scattering vector  0.0218 
alpha  AA  Slope of reflectivity  4.38 
m  1  mvalue of material. Zero means completely absorbing. m=0.65 glass/SiO2 Si Ni Ni58 supermirror Be Diamond m= 0.65 0.47 1 1.18 26 1.01 1.12 for glass/SiO2, m=1 for Ni, 1.2 for Ni58, m=26 for supermirror. m=0.47 for Si  1.0 
W  AA1  Width of supermirror cutoff  0.003 
nslit  1  Number of vertical channels in the guide (>= 1) (nslit1 vertical dividing walls).  1 
d  m  Thickness of subdividing walls  0.0005 
mleft  1  mvalue of material for left. vert. mirror  1 
mright  1  mvalue of material for right. vert. mirror  1 
mtop  1  mvalue of material for top. horz. mirror  1 
mbottom  1  mvalue of material for bottom. horz. mirror  1 
nhslit  1  Number of horizontal channels in the guide (>= 1). (nhslit1 horizontal dividing walls). this enables to have nslit*nhslit rectangular channels  1 
G  m/s2  Gravitation norm. 0 value disables G effects.  0 
aleft  1  alphavalue of left vert. mirror  1 
aright  1  alphavalue of right vert. mirror  1 
atop  1  alphavalue of top horz. mirror  1 
abottom  1  alphavalue of left horz. mirror  1 
wavy  deg  Global guide waviness  0 
wavy_z  deg  Partial waviness along propagation axis  0 
wavy_tb  deg  Partial waviness in transverse direction for top/bottom mirrors  0 
wavy_lr  deg  Partial waviness in transverse direction for left/right mirrors  0 
chamfers  m  Global chamfers specifications (in/out/mirror sides).  0 
chamfers_z  m  Input and output chamfers  0 
chamfers_lr  m  Chamfers on left/right mirror sides  0 
chamfers_tb  m  Chamfers on top/bottom mirror sides  0 
nelements  1  Number of sections in the guide (length l/nelements).  1 
nu  Hz  Rotation frequency (round/s) for Fermi Chopper approximation  0 
phase  deg  Phase shift for the Fermi Chopper approximation  0 
reflect  01  [str] Reflectivity file name. Format q(Angs1) R  "NULL" 
Name  Unit  Description  Default 

GVars    .N_reflection: (1) Array of the cumulated Number of reflections. N_reflection[0] total nb of reflections, N_reflection[1,2,3,4] l/r/t/b reflections, N_reflection[5] total nb neutrons exiting guide, N_reflection[6] total nb neutrons entering guide.  
pTable  
PSDlin_Nxp  
PSDlin_pxp  
PSDlin_p2xp  
PSDlin_Nyp  
PSDlin_pyp  
PSDlin_p2yp  
PSDlin_Nxn  
PSDlin_pxn  
PSDlin_p2xn  
PSDlin_Nyn  
PSDlin_pyn  
PSDlin_p2yn 
Guide_gravity_psd.comp
.
[ Identification  Description  Input parameters  Output parameters  Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Oct 11 07:30:14 2019