Luminosity Detector R&D
TAU Update
Halina Abramowicz, Ronen Ingbir, Sergey Kananov, Aharon Levy, Iftach Sadeh
Tel Aviv University
Collaboration
High precision design
MPI Munich meeting
17/10/2006
Backgrounds
FCAL -- TAU
17/10/2006
Background - Theta
Chen,Tauchi and Schroeder Paper
FCAL -- TAU
17/10/2006
Backgroud - Pt
Chen,Tauchi and Schroeder Paper
FCAL -- TAU
17/10/2006
Energy resolution & Digitization
No digitization
~ 25% energy resolution
Energy [GeV]
FCAL -- TAU
17/10/2006
Cells energy  Mips
Cell Energy [GeV]
FCAL -- TAU
# MIPS
1 MIP leaves 150 KeV
tested using simulation of
Muons hitting LumiCal
17/10/2006
Digitization Model
High Gain
ADC
Low Gain
At low gain : 5 bins are required for one MIP
Investigation: 6,7,8,9,10,11,12 BITS ADCs
FCAL -- TAU
17/10/2006
Results
Edig  E
Edig  E
E
E
Linear Scale
Bits
FCAL -- TAU
Log Scale
Bits
17/10/2006
Silicon Lab
Phase one - Basic setup (I/V, C/V)
Phase two - MIP measurements and first sensor design
Phase three - Sensor with basic readout elec. (Laser system)
Probe station arrived to TAU
(Thanks to DESY Zeuthen)
Purchase of lab equipment starts (Phase one)
Contact local industry
Cooperation with TAU Elec. engineering
department
FCAL -- TAU
17/10/2006
Summary
Backgrounds : the calculations should be compared to the
MC simulations.
Digitization : 8 BITS ADC maintain energy reconstruction
performance. More studies are needed to include noise and
to check full event reconstruction (energy & position).
Silicon Lab : still in the setup phase  allot of work ahead !
FCAL -- TAU
17/10/2006