ThreeDseparationplot

part of the DircPlayground

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:
• Number of sigma:

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

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

-- GeorgSchepers - 29 Nov 2007

• Number of sigma:

• Number of measured Cherenkov photons:

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

• Angle psi:

• Number of sigma in depndence of momentum and theta angle:

• Pathlength:
Topic attachments
I Attachment Action Size Date Who Comment
gif Full.gif manage 6.9 K 06 Dec 2007 - 16:21 GeorgSchepers Number of sigma in depndence of momentum and theta angle
gif l.gif manage 1.9 K 06 Dec 2007 - 16:18 GeorgSchepers Pathlength of a partice in the radiator of the barrel
gif nphotonp.gif manage 4.0 K 06 Dec 2007 - 16:13 GeorgSchepers Number of measured Cherenkov photons
gif nsigma.gif manage 2.5 K 06 Dec 2007 - 16:12 GeorgSchepers Number of sigma
gif pathlength_thetapsi_plot.gif manage 12.9 K 07 Dec 2007 - 14:27 GeorgSchepers Pathlength
gif psi.gif manage 2.8 K 06 Dec 2007 - 16:20 GeorgSchepers Angle psi
gif separationpower.gif manage 3.4 K 29 Nov 2007 - 16:17 GeorgSchepers Separation power versus momentum
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Topic revision: r4 - 07 Dec 2007, GeorgSchepers
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