1. KENTROS software update
KENTROS working group
Talk by Bruno Golosio
FIRST analysis meeting 12/04/2012

2. Recent work Charge equalization complete Z discrimination complete
Macros organized in svn subdirectories
Added new class for high level rec. in kentros framework
High level rec. implemented in a macro (as RecoTools)
Approx. energy deposit from charge calibration
Kinetic energy from energy deposit implemented

3. New HL rec. class “TAKErecTrack”
Main member variables:
TAKEcalibHit hit1 (also hit2 when the track intersects 2 modules)
: Equalized/calibrated hit data (module id, charge, time, etc.)
TAKEtrack track: geometrical information about the track
x0, y0, z0, ux, uy, uz from VTX/BM reconstruction
Length of the intersection with kentros module(s)
Ed: energy deposit (using temporary calibration parameters)
Z: atomic number
Double_t EkDep: kin. energy evaluated from Ed
Double_t EkBeta: kin. energy evaluated from TOF (not done yet)
time: relative to SC, corrected for TDCs fluctuations
Time walk correction and t0 not yet implemented
scintPath1 (also eventually 2): scintillation light pathlength

4. KENTROS High level reconstruction macros
in first/rec/trunk/macro/kentros/hlreco:
KentrosHlReco.C
For each production root file produces an output root file containing the reconstructed tracks on kentros
KentrosHlHisto.C
Template macro for extracting distributions from reconstructed tracks
This is the main macro that should be used for kentros high level data analysis

5. Time/energy deposit intercalibration with TOFWall
On Kentros:
Select reconstructed tracks hitting the small endcap
with Z = 2 , qlim< q < 5.5°
For each track evaluate intersection thickness
Distribution of equalized charge and time relative to SC
On TOFWall
Match hits to tracks from VTX/BM
Select tracks with Z = 2 , 5.5°< q <qlim
Distribution of deposited energy and time flight

6. Current activities/next steps
Time/Energy deposit intercalibration with TOFWall
D. Nicolosi, C. Agodi, B. Golosio, P. Oliva (from kentros side!)
Check matching with VTX/BM, angular distribution for Z=1 and 2, implement geometry with TAGgeoTrafo class
P. Oliva, V. Sipala
Efficiency on protons vs gain, saturation on alpha vs gain, geometrical efficiencies, distribution correction strategies
A. Brunetti
Time walk correction (evaluate run per run for each module)
D. Nicolosi, B. Golosio
FUTURE WORK: Adapt MC version of the software to make it more close to the experiment (B. Golosio)