Difference between revisions of "Results for Random Spread of Energy and angle theta in the Lab frame"
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<center>[[File:GenThetaLab.png]][[File:DetcTheta_Combined.png]]</center> | <center>[[File:GenThetaLab.png]][[File:DetcTheta_Combined.png]]</center> | ||
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+ | While the range for the angle theta runs from 5 to 55 degrees, only generated particles that are below about 42 degrees will be reconstructed with a phi shift. | ||
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<center>[[File:Theta_Phi_Before_rnd.png]][[File:Theta_Phi_After_rnd.png]]</center> | <center>[[File:Theta_Phi_Before_rnd.png]][[File:Theta_Phi_After_rnd.png]]</center> | ||
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+ | This is the result of a random distribution of phi, theta, and energy. | ||
The electron energy shows an unequal distribution | The electron energy shows an unequal distribution | ||
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<center>[[File:GenMomLab_pos5T.png]]</center> | <center>[[File:GenMomLab_pos5T.png]]</center> | ||
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+ | <center>[[File:Theta_E_5T_rnd.png]]</center> | ||
<center>[[File:GenThetaLab_pos5T.png]][[File:DetcThetaLab_pos5T.png]]</center> | <center>[[File:GenThetaLab_pos5T.png]][[File:DetcThetaLab_pos5T.png]]</center> |
Latest revision as of 22:52, 14 April 2016
0T Solenoid
The commands used in GEMC to create a uniform spread of electron energy across the solid angle of the detector:
<option name="BEAM_P" value="e-, 6.0*GeV, 30.0*deg, 10*deg"/> <option name="SPREAD_P" value="5.5*GeV, 25*deg, 180*deg"/>
Gives a uniform distribution across the solid angle components, theta and phi:
![GenThetaLab.png](/./images/5/50/GenThetaLab.png)
![DetcTheta Combined.png](/./images/5/5f/DetcTheta_Combined.png)
While the range for the angle theta runs from 5 to 55 degrees, only generated particles that are below about 42 degrees will be reconstructed with a phi shift.
![Theta Energy lab spread.png](/./images/3/35/Theta_Energy_lab_spread.png)
The change in Theta shows the effects of the Torus re-orienting the Moller electrons toward the beam line.
![GenPhiLab.png](/./images/0/0b/GenPhiLab.png)
![DetcPhiLab.png](/./images/8/83/DetcPhiLab.png)
The Phi distribution shows the 6 different paddles of the the detector.
Looking at the relationship between the scattering angles theta and phi:
![Theta Phi Before rnd.png](/./images/a/a9/Theta_Phi_Before_rnd.png)
![Theta Phi After rnd.png](/./images/7/7a/Theta_Phi_After_rnd.png)
This is the result of a random distribution of phi, theta, and energy.
The electron energy shows an unequal distribution
![GenPhiVsE 0T.png](/./images/e/e4/GenPhiVsE_0T.png)
![GenMomLab.png](/./images/c/c8/GenMomLab.png)
Electrons of energy around 2GeV are more easily influenced by the torus magnetic field.
5T Solenoid
![GenPhiVsE pos5T.png](/./images/a/a0/GenPhiVsE_pos5T.png)
![GenMomLab pos5T.png](/./images/6/63/GenMomLab_pos5T.png)
![Theta E 5T rnd.png](/./images/2/24/Theta_E_5T_rnd.png)
![GenThetaLab pos5T.png](/./images/b/bc/GenThetaLab_pos5T.png)
![DetcThetaLab pos5T.png](/./images/e/eb/DetcThetaLab_pos5T.png)
![GenPhiLab pos5T.png](/./images/thumb/3/39/GenPhiLab_pos5T.png/500px-GenPhiLab_pos5T.png)
![DetcPhiLab pos5T.png](/./images/thumb/b/bc/DetcPhiLab_pos5T.png/500px-DetcPhiLab_pos5T.png)
Looking at the relationship between the scattering angles theta and phi:
![Theta Phi Before 5T rnd.png](/./images/9/91/Theta_Phi_Before_5T_rnd.png)
![Theta Phi After 5T rnd.png](/./images/1/1d/Theta_Phi_After_5T_rnd.png)