Difference between revisions of "Comparison of GEANT Simulation to Whitney Data"

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Line 4: Line 4:
 
| Simulation || GEANT4(1cm target) ||GEANT4(1cm target)|| GEANT4(5cm target) ||  Whitney
 
| Simulation || GEANT4(1cm target) ||GEANT4(1cm target)|| GEANT4(5cm target) ||  Whitney
 
|-
 
|-
| Event Cross-Section (nb) || .61 || || || 0.079
+
| Event Cross-Section (nb) || .61 || .61|| || 0.079
 
|-
 
|-
 
|Moller Cross-Section (nb) || 0.58||0.58 || || 0.075
 
|Moller Cross-Section (nb) || 0.58||0.58 || || 0.075
Line 12: Line 12:
 
| t_{simulated} (s) || 1.3E-5 ||1.3E-4 || ||9.54E-5
 
| t_{simulated} (s) || 1.3E-5 ||1.3E-4 || ||9.54E-5
 
|-
 
|-
| N_{events} || 1026940 || || || 1001700
+
| N_{events} || 1026940 || 10270829|| || 1001700
 
|-
 
|-
 
| N_{Moller} || 975593 || 9757288|| || 951138  
 
| N_{Moller} || 975593 || 9757288|| || 951138  
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Moller events occur for about 2.5% of the incident electrons on a LH2 target.  We can assume the number of Moller events that occur within the DC range to be around 30% of the total Moller events occuring for the number of incident electrons for LH2 as well.  Since the differential cross-section over the angel theta is proportional to the differtial cross-section over wire number we can dividing the Moller differential cross-section by the product of the density and length of the target material
+
Moller events occur for about 2.5% of the incident electrons on a LH2 target.  We can assume that the Moller rate is 95% of the total event rate.  We can assume the number of Moller events that occur within the DC range to be around 30% of the total Moller events occuring for the number of incident electrons for LH2 as well.  Since the differential cross-section over the angel theta is proportional to the differtial cross-section over wire number we can dividing the Moller differential cross-section by the product of the density and length of the target material

Revision as of 20:18, 1 January 2017

Rates
Simulation GEANT4(1cm target) GEANT4(1cm target) GEANT4(5cm target) Whitney
Event Cross-Section (nb) .61 .61 0.079
Moller Cross-Section (nb) 0.58 0.58 0.075
Length of Target (cm) 1 1 5 5
t_{simulated} (s) 1.3E-5 1.3E-4 9.54E-5
N_{events} 1026940 10270829 1001700
N_{Moller} 975593 9757288 951138
N_{incident} 4E7 4E8 6E7


Moller events occur for about 2.5% of the incident electrons on a LH2 target. We can assume that the Moller rate is 95% of the total event rate. We can assume the number of Moller events that occur within the DC range to be around 30% of the total Moller events occuring for the number of incident electrons for LH2 as well. Since the differential cross-section over the angel theta is proportional to the differtial cross-section over wire number we can dividing the Moller differential cross-section by the product of the density and length of the target material