Transcript First Year Presentation (Power Point)

MINOS and Me
D. Jason Koskinen
D. Jason Koskinen
CalDet
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Goal is to understand Detector Effects
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Get calibration between Near and Far detector
responses to same particle events
A CalDet effect that has not been analyzed is
the light output dependence of the scintillator
as a function of temperature
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Near/Far Detector have consistent temperature
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CalDet runs in the PS at CERN which has
fluctuation ~10 oC
D. Jason Koskinen
Temperature Calibration
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First runs at the
CalDet used only a
RadioShack probe
Summer 2003
Thermocouple
probes were added
RS Probe
Added temp probes
D. Jason Koskinen
Necessity for Corrections
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There is a .3%/ oC change in light output from
scintillator
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Oscillation parameters are dependent on energy,
so proper energy resolution for events is
required
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CalDet goal is to get calibration to 1%
Take multiple runs w/ 1 GeV beam at CalDet
while recording temperature with probes
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With thermocouple temp Data get a handle on
temperature corrections for previous data taken
with only RS probe
D. Jason Koskinen
Death Star creating
consistent energy
particle beams
D. Jason Koskinen
1 Day
D. Jason Koskinen
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Temperatures
plotted over 1
day
Probe 15
slope
m=1.4824
Probe 16
slope
m=1.5910
Ideally m=1
D. Jason Koskinen
Getting There...
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A repeated 1 GeV run
was taken over 5 days
Histograms of the 5
slopes (from each day)
from 3 probes
Probe 15 - 1.5305 +/.0879 Probe 16 - 1.6248
+/- .0675 Probe 17 1.8179 +/- .1262
D. Jason Koskinen
Future Work
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Electron neutrino analysis
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1-2% of muon neutrinos will oscillate to
electron neutrinos
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Examine Ө13 from electron neutrino events
Difficulties
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Non-pure beam of muon neutrinos
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Low event rate
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Code-monkey skills are currently low
D. Jason Koskinen