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Halina Abramowicz

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Halina Abramowicz – PowerPoint PPT presentation

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Title: Halina Abramowicz


1
TAU activities in EUDET JRA3 (VFCAL)
Halina Abramowicz
EUDET-JRA3
1
2
Position requirements
EUDET-JRA3
2
3
Pad Design
8 cm
0.34 cm Tungsten
0.31 cm Silicon
X00.65 cm R M 1.1 cm
28 cm
Cell Size
1.3 cm 2 cm gt 1.3 cm 6 cm lt
1 Radiation Length
1 Moliere Radius
R
6.10 m
L
EUDET-JRA3
3
4
Resolutions
Cuts acceptance and back-to-back
EUDET-JRA3
4
5
Strip design
Every other ring
Bogdan Pawlik, INS PAS Cracow
R
L
EUDET-JRA3
5
6
Event selection
  • Selection E(e), E(e-), ?(e), ?(e-) as
    generated
  • E(e) gt 0.8 Ebeam , E(e-) gt 0.8 Ebeam
  • 30 lt ?(e) or ?(e-) lt 75 mrad (never both,
    alternate e, e-)
  • ? reduces sensitivity to the IP position

electron energy (GeV)
Min. energy cut (GeV)
EUDET-JRA3
6
7
Event selection
3 cylinders
2 cylinders
Left side PH
1 cylinders
Right side PH
EUDET-JRA3
7
8
How well do we have to know the detector
performance ?
EUDET-JRA3
8
9
Selection procedure
  • Study of selection rules
  • Energy cut on both leptons fiducial volume cut
    on one lepton high requirement on
    energy calibration.
  • Containment requirement on both leptons back to
    back topology high requirement on
    angular resolution.

Need to study these issues, and include
backgrounds
EUDET-JRA3
9
10
Performance of present configurations
Strip Performance Pad Performance Parameter
816 25 Energy resolution
2.1 10-5 rad 3.5 10-5 rad resolution
10-3 rad 10-2 rad resolution
2.1 10-7 rad 1.5 10-6 rad
3720 (with bonding sectors) 13,320 (without bonding) 25,200 Electronics channels
Need to decide on one of the options (feasibility
driven)
EUDET-JRA3
10
11
Infrastructure development
  • Present lab testing TGC modules for ATLAS free
    in about one year.
  • Build clean room.
  • Acquire silicon sensor (David Strom Oregon U.)
  • Start building a testing stand for learning
    purposes.

EUDET-JRA3
11
12
Summary
  • Simulation of LumiCal performance
  • - implement GEANT4
  • - GRID implementation
  • - background studies
  • Develop lab for sensor testing
  • - learn how to work with silicon sensors
  • - participate in the construction and tests
  • of LumiCal prototype

TAU - LumiCal Halina Abramowicz Ronen
Ingbir Sergey Kananov Aharon Levy Iftach Sade
EUDET-JRA3
12
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