View source for Looking at effects of Solenoid on Phi Shifts

=[[Using Moller Data to alter energy range]]=

Using the Moller event file MollerScattering_NH3_4e8incident.dat, we can use the fact that GEMC will only create a particle based on the Moller electron.  While the data for the scattered electron is passed within a LUND file, kinematically this electron doesn't leave the beam area, and thus never enters the detectors to be recreated.  Since the solenoid's purpose is draw electrons trajectories closer the the beam line any electron close the the beam line will be drawn even closer, ensuring that it is never recreated in a GEMC simulation.

We can alter the energy conversion from MollerScattering_NH3_4e8incident.dat to investigate the energy-phi shift relationship

<center>[[File:FinalTheta.jpg]]</center>
<pre>
    Px=evt.FnlMom[0]/1000;
                Py=evt.FnlMom[1]/1000;
                Pz=evt.FnlMom[2]/1000;                
                px=evt.MolMom[0]/1000;
                py=evt.MolMom[1]/1000;
                pz=evt.MolMom[2]/1000;
                
                KE=evt.FnlKE/1000;
                ke=evt.MolKE/1000;
</pre>
Using the fact that the minimum momentum of MollerScattering_NH3_4e8incident.dat

<pre>
awk 'NR == 1 {line = $0; min = $15} NR >1 && $15 < min {line =$0; min =$15} END{print line}' MollerScattering_NH3_4e8incident.dat

11000    0     0     11000.5     0     0     0     10997.9     1.42548     -0.177032     10998.4     0     0     0     2.01929     -1.42548     0.177032     2.01939     0     0     -509.621 </pre>

Dividing by 1 will give us a distribution of

=[[Solenoid_effect_in_ 2_GeV_and_up_range|Solenoid effect > 2GeV]]=

=[[Solenoid effect in 200 MeV and up range|Solenoid effect > 200 MeV]]=

=[[Solenoid effect  20 MeV and up|Solenoid effect > 20MeV]]=




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=Links=

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