Changeset 1090 for sans

Timestamp:

Mar 7, 2018 12:00:21 PM (5 years ago)

Author:

srkline

Message:

Adding proceures - not complete yet- to allow smearing of data under white beam conditions. currently only wavelength effects taken into account, not the geometry. Unknown if geometry is a significant correction given the width of the qhite beam distribution. further testing is needed.

Location:

sans/Dev/trunk/NCNR_User_Procedures/Reduction/VSANS

Files:

• VC_DetectorBinning_Utils.ipf (modified) (2 diffs)
• VSANS_Includes.ipf (modified) (1 diff)
• V_DummyFunctions.ipf (added)
• V_WhiteBeamDistribution.ipf (added)
• V_WhiteBeamSmear.ipf (added)

sans/Dev/trunk/NCNR_User_Procedures/Reduction/VSANS/VC_DetectorBinning_Utils.ipf

@@ -1419 +1419 @@
         
 // S2 = sample aperture diameter [mm]
+// as of 3/2018, the "internal" sample aperture is not in use, only the external
         S2 = V_getSampleAp2_size(folderStr)*10          // sample ap 1 or 2? 2 = the "external", but may not exist?
         
@@ -1444 +1445 @@
         Print lambda,lambdaWidth,DDet,apOff,S1,S2,L1,L2,BS,del_r,usingLenses
 endif
+
+
+// TODO:
+// this is the point where I need to switch on the different collimation types (white beam, slit, Xtal, etc)
+// to calculate the correct resolution, or fill the waves with the correct "flags"
+//
+
+// For white beam data, the wavelength distribution can't be represented as a gaussian, but all of the other 
+//  geometric corrections still apply. Passing zero for the lambdaWidth will return the grometry contribution,
+//  as long as the wavelength can be handled separately. It appears to be correct to do as a double integral,
+// with the inner(lambda) calculated first, then the outer(geometry).
+//
+
 
         ii=0

sans/Dev/trunk/NCNR_User_Procedures/Reduction/VSANS/VSANS_Includes.ipf

@@ -115 +115 @@
 #include "V_USANS_SlitSmearing_v40"
 
+// for smearing of White beam data
+//
+#include "V_WhiteBeamSmear"
+#include "V_WhiteBeamDistribution"
+#include "V_DummyFunctions"
 
 
-
-