Research algorithm of overlapping clusters in PrimEx
description
Transcript of Research algorithm of overlapping clusters in PrimEx
Research algorithm of overlapping clusters in PrimEx
By Victor Tarasov
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Main purpose
To look how works • 1) mechanism of clusterization in PrimEx• 2) algorithm of overlapping clusters in PrimEx
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Simulation 1 gamma with Energy 2 GeV, X=11 cm, Y=15 cm
E= 1.99±0.04X= 10.98±0.18Y=14.99±0.16
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The dependence between GEANT energy and energy in HyCal (for 0.5, 1.0, 1.5, 2.0 GeV)
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Simulation of 2 gammas with energies 1 and 10 GeV; 3 and 8 GeV
Reconstruct position (X and Y) have a values with good agreement
relatively GEANT values in error limits
X1 = 5, Y1 = 15X2 = -5, Y2 = 15
in both cases
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Energy calibration in PrimEx
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Check position and energy for 1 gamma in GEANT energy range 0.5 - 8 GeV
GEANTX=11Y=15
in all cases
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Table with values for 1 gamma simulation
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Extreme position
GEANT HyCal E = 2 GeV, E =(1.99±0.04) GeV X = 32cm , X=(32.01±0,22) cmY = 32cm, Y=(32,04±0,24) cm
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Double check for 2 gammas
GEANTE1 = E2 = 5.5 , X1 = -5, X2 = 5, Y1=Y2=15,
HyCalE = 5.56±0.08,
X1 = -4.96±0.16,X2 = 4.97±0.16,Y =14.98±0.12,
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Overlapping clusters
Simulation 2 gammas with fixed Energy (1
and 4 GeV) and different distance between them:
2,3,4,5 and 6 cm
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|Egeant/Ehycal -1| < 2·σ,
where σ is energy resolution in researching
diapason of energy
Dependence between probability to separate 2 clusters and distance between them
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Conclusion
1. Connection with PrimEx experimenta) Examination with PrimEx setup
b) Examination with PrimEx program software, look how GEANT and prim_ana (main program for analyzing in this
experiment) works2. Look for mechanism of reconstruction coordinate and energy
3. Research mechanism of overlapping clusters