Difference: ThreeDseparationplot (1 vs. 12)

Revision 12
15 Feb 2008 - Main.LarsSchmitt
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 30 to 30
 

2. Angle Dependence

The number of produced photons denpends on the pathlength in the radiator which depends again on the incident angle.
Changed:
<
<
See also
http://www.gae.ucm.es/~emma/tesina/node4.html
>
>
See also
http://www.gae.ucm.es/~emma/docs/tesina/node4.html
 

Pathlength:

Revision 11
15 Jan 2008 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 75 to 75
 

Example on the treatment on the Phase Space Plots


Changed:
<
<
On the Example pbar p to phi phi it is shown which fraction of produced kaons can be separated from pions with the help of the Barrel Dirc. First one sees all the kaons produced, secondly the kaons in the solid angle and the lower threshold (of the Kaon detection) of the Cherenkov detector and last but not least all the kaons over the limit of numbers of sigma separation beeing 4. The latter conditions is done for the two track resolutions "sigma" (track) = 10 mrad and 30 mrad. It shows that we loose with a bad track resolution for higher monenta a not minor amount of kaons (meaning having a not sufficient resolution to separate them from pions) in the angular region of the Barel DIRC. Remark: The calculations are peliminary and the separation limit arbitrary.
>
>
(Presented in the PidtagMeeting07). On the Example pbar p to phi phi (find the full set of Phasespaceplots on VrvsMeeting11) it is shown which fraction of produced kaons can be separated from pions with the help of the Barrel Dirc. First one sees all the kaons produced, secondly the kaons in the solid angle and the lower threshold (of the Kaon detection) of the Cherenkov detector and last but not least all the kaons over the limit of numbers of sigma separation beeing 4. The latter conditions is done for the two track resolutions "sigma" (track) = 10 mrad and 30 mrad. It shows that we loose with a bad track resolution for higher monenta a not minor amount of kaons (meaning having a not sufficient resolution to separate them from pions) in the angular region of the Barel DIRC. Remark: The calculations are peliminary and the separation limit arbitrary.
 
pbar p to phi phi
Revision 10
14 Jan 2008 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 75 to 75
 

Example on the treatment on the Phase Space Plots


Changed:
<
<
On the Example pbar p to phi phi: is shown which numbers of kaon can be separated from the pions with the help of the Barrel Dirc. First one sees all the kaons produced, secondly the kaons in the solid angle of the detector and last but not least the kaon over the limit of numbers of sigma separation beeing 4. The latter conditions shows that we loose for higher monenta a not minor amount of kaons (meaning having a not sufficient resolution to separate them from pions) in the angular region of the Barel DIRC.
>
>
On the Example pbar p to phi phi it is shown which fraction of produced kaons can be separated from pions with the help of the Barrel Dirc. First one sees all the kaons produced, secondly the kaons in the solid angle and the lower threshold (of the Kaon detection) of the Cherenkov detector and last but not least all the kaons over the limit of numbers of sigma separation beeing 4. The latter conditions is done for the two track resolutions "sigma" (track) = 10 mrad and 30 mrad. It shows that we loose with a bad track resolution for higher monenta a not minor amount of kaons (meaning having a not sufficient resolution to separate them from pions) in the angular region of the Barel DIRC. Remark: The calculations are peliminary and the separation limit arbitrary.
 
pbar p to phi phi
Line: 86 to 86
 
Cut momentum and theta angle and number of sigma larger 4:

Added:
>
>

With a track resulution of 10 mrad:
traqck resulution 10 mrad

With a track resolution of 30 mrad:
  Cut momentum and theta angle and number of sigma larger 4

-- GeorgSchepers - 29 Nov 2007
Line: 104 to 110
 
META FILEATTACHMENT attr="" comment="pbar p to phi phi" date="1197381288" name="ppbartophiphi.jpeg" path="ppbartophiphi.jpeg" size="65283" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Cut momentum and theta angle" date="1197381353" name="pbarptophiphi_cutptheta.jpeg" path="pbarptophiphi_cutptheta.jpeg" size="53358" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Cut momentum and theta angle and number of sigma larger 4" date="1197381407" name="pbarptophiphi_cutns.jpeg" path="pbarptophiphi_cutns.jpeg" size="49957" user="GeorgSchepers" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="traqck resulution 10 mrad" date="1200329222" name="goodtrackresolution.jpeg" path="goodtrackresolution.jpeg" size="31218" user="GeorgSchepers" version="1.1"
Revision 9
14 Jan 2008 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 75 to 75
 

Example on the treatment on the Phase Space Plots


Changed:
<
<
pbar p to phi phi:
>
>
On the Example pbar p to phi phi: is shown which numbers of kaon can be separated from the pions with the help of the Barrel Dirc. First one sees all the kaons produced, secondly the kaons in the solid angle of the detector and last but not least the kaon over the limit of numbers of sigma separation beeing 4. The latter conditions shows that we loose for higher monenta a not minor amount of kaons (meaning having a not sufficient resolution to separate them from pions) in the angular region of the Barel DIRC.
 
pbar p to phi phi
Revision 8
11 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 72 to 72
 
Changed:
<
<

>
>

Example on the treatment on the Phase Space Plots

 
Added:
>
>

pbar p to phi phi:

pbar p to phi phi
Cut momentum and theta angle:

Cut momentum and theta angle
Cut momentum and theta angle and number of sigma larger 4:

Cut momentum and theta angle and number of sigma larger 4
 

-- GeorgSchepers - 29 Nov 2007
Deleted:
<
<
  • Ref.: Aida Galoyan:
    Ref.: Aida Galoyan
 
META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma" date="1196957565" name="nsigma.gif" path="nsigma.gif" size="2599" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of measured Cherenkov photons" date="1196957630" name="nphotonp.gif" path="nphotonp.gif" size="4140" user="GeorgSchepers" version="1.1"
Line: 92 to 100
 
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p" date="1197049114" name="nsigma_p_plot.gif" path="nsigma_p_plot.gif" size="3466" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta" date="1197049185" name="nsigma_p_theta_500-5000.gif" path="nsigma_p_theta_500-5000.gif" size="22452" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta" date="1197049220" name="nsigma_p_theta_2000-4000.gif" path="nsigma_p_theta_2000-4000.gif" size="21692" user="GeorgSchepers" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="pbar p to phi phi" date="1197381288" name="ppbartophiphi.jpeg" path="ppbartophiphi.jpeg" size="65283" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Cut momentum and theta angle" date="1197381353" name="pbarptophiphi_cutptheta.jpeg" path="pbarptophiphi_cutptheta.jpeg" size="53358" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Cut momentum and theta angle and number of sigma larger 4" date="1197381407" name="pbarptophiphi_cutns.jpeg" path="pbarptophiphi_cutns.jpeg" size="49957" user="GeorgSchepers" version="1.1"
Revision 7
10 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

ThreeDseparationplot


part of the DircPlayground
Deleted:
<
<

 

Calculation of the Separationpower in dependence of momentum and angle

Line: 19 to 18
  Number of sigma
The plot represents the Numbers of sigmas two particles are separated depending on the mometum with
Changed:
<
<
  • "sigma" = 0.01 is the resolution of a single photon
>
>
  • "sigma" = 0.01 is the resolution of a single photon track
 
  • "sigma/sqrt(nph)" gives the resolution of a track with
    • nph = 16 is a typical number of produced photons
  • Kaon = 493.68 MeV
Line: 30 to 29
 

2. Angle Dependence

Added:
>
>
The number of produced photons denpends on the pathlength in the radiator which depends again on the incident angle.
 
See also
http://www.gae.ucm.es/~emma/tesina/node4.html
Deleted:
<
<

 

Pathlength:

Deleted:
<
<

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

  Pathlength of a partice in the radiator of the barrel
Changed:
<
<
with:
>
>
(see PathLength, Aida Galoyan))with:
  Angle psi:
Angle psi
Changed:
<
<

>
>

Pathlength of a partice in the radiator of the barrel:

Pathlength
 

Number of measured Cherenkov photons:

Number of measured Cherenkov photons
Changed:
<
<

>
>

  Detected Cherenkov photons:
Changed:
<
<
>
>

  Detected Cherenkov photons
Line: 82 to 78
 

-- GeorgSchepers - 29 Nov 2007
Added:
>
>
  • Ref.: Aida Galoyan:
    Ref.: Aida Galoyan
 
META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma" date="1196957565" name="nsigma.gif" path="nsigma.gif" size="2599" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of measured Cherenkov photons" date="1196957630" name="nphotonp.gif" path="nphotonp.gif" size="4140" user="GeorgSchepers" version="1.1"
Revision 6
07 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 8 to 8
 

Changed:
<
<

Calculation of the Seoarationpower in dependence of momentum and angle

>
>

Calculation of the Separationpower in dependence of momentum and angle

The dependence of N(sigma) from the momentum p and the angle theta is calculated and displayed with Mathematia:
 

1. Momentum Dependence
Deleted:
<
<
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 Number of sigma in dependence of momentum p:
Number of sigma in dependence of momentum p
Line: 29 to 28
 
Changed:
<
<
2. Angle Dependence
>
>

2. Angle Dependence

 

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


Changed:
<
<
  • Pathlength:
    Pathlength
>
>

Pathlength:

 
Changed:
<
<
  • Pathlength of a partice in the radiator of the barrel:
>
>
Pathlength
Pathlength of a partice in the radiator of the barrel:

  Pathlength of a partice in the radiator of the barrel with:
Changed:
<
<
  • Angle psi:
>
>
Angle psi:
  Angle psi
Changed:
<
<

>
>

Number of measured Cherenkov photons:

 
Deleted:
<
<
  • Number of measured Cherenkov photons:
  Number of measured Cherenkov photons

Changed:
<
<
  • Detected Cherenkov photons:
>
>
Detected Cherenkov photons:
  Detected Cherenkov photons
Deleted:
<
<

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

 
Added:
>
>

Number of sigma in dependence of momentum and theta angle:

Number of sigma in depndence of momentum and theta angle
 
Changed:
<
<
  • Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta:
>
>

Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta:

  Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta
Changed:
<
<

  • Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta:
>
>

Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta:

  Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta
Revision 5
07 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 14 to 14
  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]))
Changed:
<
<
Plot
Separation power versus momentum:
Separation power versus momentum
>
>
Plot Number of sigma in dependence of momentum p:
Number of sigma in dependence of momentum p
 
  • Number of sigma:
    Number of sigma

Line: 33 to 33
 

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

>
>

 
Added:
>
>
  • Pathlength:
    Pathlength
 
Changed:
<
<
-- GeorgSchepers - 29 Nov 2007
>
>
  • Pathlength of a partice in the radiator of the barrel:
    Pathlength of a partice in the radiator of the barrel with:
  • Angle psi:
    Angle psi
 
Changed:
<
<
  • Number of sigma:
    Number of sigma
>
>

 

  • Number of measured Cherenkov photons:
    Number of measured Cherenkov photons
Changed:
<
<
  • Pathlength of a partice in the radiator of the barrel:
    Pathlength of a partice in the radiator of the barrel
>
>
  • Detected Cherenkov photons:
    Detected Cherenkov photons
 
Changed:
<
<
  • Angle psi:
    Angle psi
>
>

 

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

 
Changed:
<
<
  • Pathlength:
    Pathlength
>
>

  • Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta:
    Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta

  • Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta:
    Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta


-- GeorgSchepers - 29 Nov 2007
 

META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma" date="1196957565" name="nsigma.gif" path="nsigma.gif" size="2599" user="GeorgSchepers" version="1.1"
Line: 64 to 84
 
META FILEATTACHMENT attr="" comment="Angle psi" date="1196958016" name="psi.gif" path="psi.gif" size="2848" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in depndence of momentum and theta angle" date="1196958065" name="Full.gif" path="Full.gif" size="7072" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Pathlength" date="1197037638" name="pathlength_thetapsi_plot.gif" path="pathlength_thetapsi_plot.gif" size="13258" user="GeorgSchepers" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="Detected Cherenkov photons" date="1197048918" name="nphotonsdetected_plot.gif" path="nphotonsdetected_plot.gif" size="16436" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p" date="1197049114" name="nsigma_p_plot.gif" path="nsigma_p_plot.gif" size="3466" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p (500-5000MeV/c) and angle theta" date="1197049185" name="nsigma_p_theta_500-5000.gif" path="nsigma_p_theta_500-5000.gif" size="22452" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in dependence of momentum p (2000-4000MeV/c) and angle theta" date="1197049220" name="nsigma_p_theta_2000-4000.gif" path="nsigma_p_theta_2000-4000.gif" size="21692" user="GeorgSchepers" version="1.1"
Revision 4
07 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 15 to 15
 
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:
Deleted:
<
<
  Separation power versus momentum
Added:
>
>
  • Number of sigma:
    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
Line: 53 to 54
 
  • Number of sigma in depndence of momentum and theta angle:
    Number of sigma in depndence of momentum and theta angle
Added:
>
>
  • Pathlength:
    Pathlength
 
META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma" date="1196957565" name="nsigma.gif" path="nsigma.gif" size="2599" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of measured Cherenkov photons" date="1196957630" name="nphotonp.gif" path="nphotonp.gif" size="4140" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Pathlength of a partice in the radiator of the barrel" date="1196957932" name="l.gif" path="l.gif" size="1960" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Angle psi" date="1196958016" name="psi.gif" path="psi.gif" size="2848" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in depndence of momentum and theta angle" date="1196958065" name="Full.gif" path="Full.gif" size="7072" user="GeorgSchepers" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="Pathlength" date="1197037638" name="pathlength_thetapsi_plot.gif" path="pathlength_thetapsi_plot.gif" size="13258" user="GeorgSchepers" version="1.1"
Revision 3
06 Dec 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

Line: 38 to 38
 

-- GeorgSchepers - 29 Nov 2007
Added:
>
>
  • 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
 
META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
Added:
>
>
META FILEATTACHMENT attr="" comment="Number of sigma" date="1196957565" name="nsigma.gif" path="nsigma.gif" size="2599" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of measured Cherenkov photons" date="1196957630" name="nphotonp.gif" path="nphotonp.gif" size="4140" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Pathlength of a partice in the radiator of the barrel" date="1196957932" name="l.gif" path="l.gif" size="1960" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Angle psi" date="1196958016" name="psi.gif" path="psi.gif" size="2848" user="GeorgSchepers" version="1.1"
META FILEATTACHMENT attr="" comment="Number of sigma in depndence of momentum and theta angle" date="1196958065" name="Full.gif" path="Full.gif" size="7072" user="GeorgSchepers" version="1.1"
Revision 2
30 Nov 2007 - Main.GeorgSchepers
Line: 1 to 1
 
META TOPICPARENT name="DircPlayground"

ThreeDseparationplot


Changed:
<
<

part of the DircPlayground

>
>
part of the DircPlayground

Calculation of the Seoarationpower in dependence of momentum and angle

 
Deleted:
<
<


 
Added:
>
>
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]))
Changed:
<
<

* Separation power versus momentum:

>
>

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
Line: 24 to 27
 
  • refractiv index n=1.47

Added:
>
>

2. Angle Dependence

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

  -- GeorgSchepers - 29 Nov 2007

META FILEATTACHMENT attr="" comment="Separation power versus momentum" date="1196353043" name="separationpower.gif" path="separationpower.gif" size="3526" user="GeorgSchepers" version="1.1"
 
This site is powered by FoswikiCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding PANDA Wiki? Send feedback
Imprint (in German)
Privacy Policy (in German)