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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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Proton example #1

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Proton example #2

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Proton example #3

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Positron example #1

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Positron example #2

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Positron example #3

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antimuon example #1

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antimuon example #2

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antimuon example #3

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?? snarlno=47: looks to be a muon, no Cerenkov, but TOF=toftdc[2]-toftdc[0]= -54.

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deuteron example #1

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deuteron example #2

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deuteron example #3

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pion+, example #1

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pion+, example #2

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pion+, example #3

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pion+, example #4

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RUN: 40916

Negative particles: p-, e-, μ-, π-

Momentum: p=2.4GeV

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antiproton, example #1

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antiproton, example #2

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antiproton, example #3

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electron, example #1

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electron, example #2

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electron, example #3

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muon, example #1

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muon, example #2

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muon, example #3

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pion- , example #1

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pion- , example #2

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pion- , example #3

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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 34snarlno=132

University of Athens 35snarlno=148

University of Athens 36snarlno=169

University of Athens 37snarlno=190

University of Athens 38snarlno=373

University of Athens 39snarlno=443

University of Athens 40snarlno=450

University of Athens 41snarlno=48

University of Athens 42snarlno=494

University of Athens 43snarlno=66

University of Athens 44snarlno=694

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More peculiar measurements

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snarlno=17800: TOF = -1492, Cerenkov=True, muon-like track

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snarlno=3719: electron-like TOF and Cerenkov, but muon-like tracks

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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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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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