ThreeDseparationplot


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Calculation of the Seoarationpower in dependence of momentum and angle

1. Momentum Dependence
The dependence of N(sigma) from the momentum p and the angle theta is calculated and displayed with Mathematia
Nsigma= (Kaon^2 - pion^2) / ((2 * p^2 * sigma/Sqrt[nph] * Sqrt[n^2 - 1]))

Plot
Separation power versus momentum:

Separation power versus momentum
The plot represents the Numbers of sigmas two particles are separated depending on the mometum with
  • "sigma" = 0.01 is the resolution of a single photon
  • "sigma/sqrt(nph)" gives the resolution of a track with
    • nph = 16 is a typical number of produced photons
  • Kaon = 493.68 MeV
  • pionn = 139.57
  • refractiv index n=1.47

2. Angle Dependence

See also
http://www.gae.ucm.es/~emma/tesina/node4.html

-- GeorgSchepers - 29 Nov 2007

  • Number of sigma:
    Number of sigma

  • Number of measured Cherenkov photons:
    Number of measured Cherenkov photons

  • Pathlength of a partice in the radiator of the barrel:
    Pathlength of a partice in the radiator of the barrel

  • Angle psi:
    Angle psi

  • Number of sigma in depndence of momentum and theta angle:
    Number of sigma in depndence of momentum and theta angle
Topic attachments
I Attachment Action Size Date Who Comment
Full.gifgif Full.gif manage 6.9 K 06 Dec 2007 - 16:21 GeorgSchepers Number of sigma in depndence of momentum and theta angle
l.gifgif l.gif manage 1.9 K 06 Dec 2007 - 16:18 GeorgSchepers Pathlength of a partice in the radiator of the barrel
nphotonp.gifgif nphotonp.gif manage 4.0 K 06 Dec 2007 - 16:13 GeorgSchepers Number of measured Cherenkov photons
nsigma.gifgif nsigma.gif manage 2.5 K 06 Dec 2007 - 16:12 GeorgSchepers Number of sigma
psi.gifgif psi.gif manage 2.8 K 06 Dec 2007 - 16:20 GeorgSchepers Angle psi
separationpower.gifgif separationpower.gif manage 3.4 K 29 Nov 2007 - 16:17 GeorgSchepers Separation power versus momentum
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Topic revision: r3 - 06 Dec 2007, GeorgSchepers
 
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