Difference between revisions of "FDC geometry study"

From GlueXWiki
Jump to: navigation, search
 
Line 3: Line 3:
 
** No half-cell offset between neighboring wire planes.
 
** No half-cell offset between neighboring wire planes.
 
* Alternate geometry GeomB
 
* Alternate geometry GeomB
** Configuration of chambers:  UU' (0 degrees), VV'(-60 degrees), W(+60 degrees)
+
** Configuration of chambers:  UU' (0 degrees), VV'(-60 degrees), WW'(+60 degrees)
 +
** Half-cell offset between primed and unprimed chambers
 +
* In both cases I studied 3 cm separation between wire planes (nominal geometry) and 2 cm separation.
 +
* Single pion tracks (p=0.5,1.0,1.5,2.5 GeV/c) generated from the center of the target and analyzed with the standard reconstruction
 +
** The Lorentz effect was turned on, but no other smearing was applied
 +
** The Riemann Fit was used to fit segments and determine the sign for the correction to the Lorentz effect
 +
** Full track reconstruction with standard (ALT1) least squares fitter

Revision as of 09:14, 17 November 2008

  • The baseline geometry (GeomA) is Hall-D Geometry V4.
    • Configuration of chambers: U (0 degrees), V (+60 degrees), W (-60 degrees)
    • No half-cell offset between neighboring wire planes.
  • Alternate geometry GeomB
    • Configuration of chambers: UU' (0 degrees), VV'(-60 degrees), WW'(+60 degrees)
    • Half-cell offset between primed and unprimed chambers
  • In both cases I studied 3 cm separation between wire planes (nominal geometry) and 2 cm separation.
  • Single pion tracks (p=0.5,1.0,1.5,2.5 GeV/c) generated from the center of the target and analyzed with the standard reconstruction
    • The Lorentz effect was turned on, but no other smearing was applied
    • The Riemann Fit was used to fit segments and determine the sign for the correction to the Lorentz effect
    • Full track reconstruction with standard (ALT1) least squares fitter