run: 40912
DESCRIPTION
RUN: 40912. Positive particles: p, e+, μ+, d, π+. Momentum: p=2.4GeV. Demonstration of typical and peculiar events at CALDET. G.Choudalakis, N.Saoulidou, P.Stamoulis, G.Tzanakos, M.Zois. Proton example #1. Proton example #2. Proton example #3. Positron example #1. - PowerPoint PPT PresentationTRANSCRIPT
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University of Athens 1
RUN: 40912
Positive particles: p, e+, μ+, d, π+
Momentum: p=2.4GeV
G.Choudalakis,
N.Saoulidou,
P.Stamoulis,
G.Tzanakos,
M.Zois
Demonstration of typical and peculiar eventsat CALDET
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University of Athens 2
Proton example #1
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University of Athens 3
Proton example #2
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University of Athens 4
Proton example #3
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University of Athens 5
Positron example #1
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University of Athens 6
Positron example #2
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University of Athens 7
Positron example #3
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University of Athens 8
antimuon example #1
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University of Athens 9
antimuon example #2
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University of Athens 10
antimuon example #3
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University of Athens 11
?? snarlno=47: looks to be a muon, no Cerenkov, but TOF=toftdc[2]-toftdc[0]= -54.
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University of Athens 12
deuteron example #1
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University of Athens 13
deuteron example #2
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University of Athens 14
deuteron example #3
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University of Athens 15
pion+, example #1
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University of Athens 16
pion+, example #2
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University of Athens 17
pion+, example #3
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University of Athens 18
pion+, example #4
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University of Athens 19
RUN: 40916
Negative particles: p-, e-, μ-, π-
Momentum: p=2.4GeV
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University of Athens 20
antiproton, example #1
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University of Athens 21
antiproton, example #2
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University of Athens 22
antiproton, example #3
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University of Athens 23
electron, example #1
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University of Athens 24
electron, example #2
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University of Athens 25
electron, example #3
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University of Athens 26
muon, example #1
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University of Athens 27
muon, example #2
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University of Athens 28
muon, example #3
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University of Athens 29
pion- , example #1
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University of Athens 30
pion- , example #2
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University of Athens 31
pion- , example #3
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University of Athens 32
Events of strange TOF (toftdc[2]-toftdc[0])
RUN 40912, positive beam, p=2.4GeV
TOFTDC[2]TOFTDC[0]
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University of Athens 33snarlno=106
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University of Athens 34snarlno=132
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University of Athens 35snarlno=148
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University of Athens 36snarlno=169
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University of Athens 37snarlno=190
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University of Athens 38snarlno=373
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University of Athens 39snarlno=443
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University of Athens 40snarlno=450
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University of Athens 41snarlno=48
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University of Athens 42snarlno=494
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University of Athens 43snarlno=66
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University of Athens 44snarlno=694
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University of Athens 45
More peculiar measurements
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University of Athens 46
snarlno=17800: TOF = -1492, Cerenkov=True, muon-like track
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University of Athens 47
snarlno=3719: electron-like TOF and Cerenkov, but muon-like tracks
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University of Athens 48
In all the preceding event displays, hits with nnpe < 1 wereomitted.
But where should we put the pulse-height threshold so as to cut the cross-talk and othernoise, without cutting the “real” hits?
nnpe
unbiased distribution of allthe hits of all the events
only hits located at strip<5or strip>20 (marginal)
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University of Athens 49
at this color-scale all red hits are nnpe>2, hence significant hits, whileit is possible to compare the low-pulse-height hits of variant color
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University of Athens 50
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University of Athens 51
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University of Athens 52
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University of Athens 53
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University of Athens 54
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University of Athens 55
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University of Athens 56