Title: Halina Abramowicz
1TAU activities in EUDET JRA3 (VFCAL)
Halina Abramowicz
EUDET-JRA3
1
2Position requirements
EUDET-JRA3
2
3Pad 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
4Resolutions
Cuts acceptance and back-to-back
EUDET-JRA3
4
5Strip design
Every other ring
Bogdan Pawlik, INS PAS Cracow
R
L
EUDET-JRA3
5
6Event 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
7Event selection
3 cylinders
2 cylinders
Left side PH
1 cylinders
Right side PH
EUDET-JRA3
7
8How well do we have to know the detector
performance ?
EUDET-JRA3
8
9Selection 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
10Performance 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
11Infrastructure 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
12Summary
- 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