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Just a combination of a few old and new plots … - PowerPoint PPT Presentation


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Just to show you some plots (old and new). Just a combination of a few old and new plots … 2 equations for each roman pot on each side of the IP: x = a 11 x * + L eff x  x * + a 13 y * + a 14  y * y = a 31 x * + a 32  x * + a 33 y * + L eff y  y *

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PowerPoint Slideshow about 'Just a combination of a few old and new plots …' - hiero


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slide1

Just to show you some plots (old and new)

  • Just a combination of a few old and new plots …
  • 2 equations for each roman pot on each side of the IP:
  • x = a11 x*+ Leffxx* + a13 y* + a14y*
  • y = a31 x*+ a32 x* + a33 y* + Leffy y*
  • Combining two Roman Pot, one’d have 4 equations and 4 unknowns  solvable  -t,  …
  • as I talked about in (Oct. 21, 2009) : http://www.c-ad.bnl.gov/kinyip/pp2pp/vertex,%20theta%20and%20-t%20distributions.ppt
slide2

The “mean” is now in the order of magnitude of 0.x mm.

  • x(EVU-WVD) ~1.6 mm
  • y(EVU-WVD) ~0.2 mm
  • x(EVD-WVU) ~0.3 mm
  • y(EVD-WVU) ~0.3 mm
  • Before alignment, it’s ~ some mm.
slide3

-t = 4P02Sin2(/2) ,

P0 = 100. 21557 calculated from B and G =191.500006443 in RampEditor (of C-AD)

-t distribution without any collinearity cut

After loose collinearity cut

slide4

 =Tan-1(Py/Px)

without collinearity cut

with loose collinearity cut

slide7

Frac. of golden events / triggered events :

  • Runs with loose collinearity cut
  • 10182025 71% 65%
  • 10183035 78% 74%
  • 10183037 77% 73%