october 20th, 2006 a. mazzacane 1 4 th concept software first results

October 20th, 2006October 20th, 2006 A. MazzacaneA. Mazzacane 11

4th Concept Software

First Results


ILCroot flow controlILCroot flow control

Initialization

Eventgeneration

Particletransport Hits

Summable Digits

EventmergingDigitsClusters

Tracking PID ESD Analysis


ILCroot persistent objectsILCroot persistent objects


Status of ILCroot: GeneratorsStatus of ILCroot: Generators(A. Mazzacane)(A. Mazzacane)

Two more classes added to read files from Two more classes added to read files from external generator (like Pandora-Pythia) external generator (like Pandora-Pythia) Stdhep formatStdhep formatText formatText format

Pandora-Pythia currently used to generate Pandora-Pythia currently used to generate events for testing the detectorsevents for testing the detectors


Status of ILCroot: VXDStatus of ILCroot: VXD(A.Mazzacane D. Barbareschi)(A.Mazzacane D. Barbareschi)

Add new class to read gdml geometry Add new class to read gdml geometry formatformat

different version of SiD VXD:different version of SiD VXD:cilindricalcilindrical in ladder (only barrel, endcaps ready soon)in ladder (only barrel, endcaps ready soon)

sid00 -> sidmay06sid00 -> sidmay06


Status of ILCroot: VXDStatus of ILCroot: VXD



3 technologies already present in ILCroot code:

•Silicon Pixel Detectors (SPD)

•Silicon Drift Detectors (SDD)

•Silicon Strip Detectors (SSD)


Status of ILCroot: TPCStatus of ILCroot: TPC


Status of ILCroot: TrackingStatus of ILCroot: Tracking(F. Ignatov)(F. Ignatov)

Primary seeding: looks for track with hits 20 layers apart + Primary seeding: looks for track with hits 20 layers apart + beam constraintbeam constraint

Secondary seeding: looks for tracks with hits in layer 1, 4 Secondary seeding: looks for tracks with hits in layer 1, 4 and 7 (no beam constraint)and 7 (no beam constraint)

Full Kalman filter then initiatedFull Kalman filter then initiated 1st step: start from TPC fit + prolongation to VXD (add clusters 1st step: start from TPC fit + prolongation to VXD (add clusters

there)there) 2st step: start from VXD, refit trough TPC + prolongation to MUD2st step: start from VXD, refit trough TPC + prolongation to MUD 3st step: start from MUD and refit inword with TPC + VXD3st step: start from MUD and refit inword with TPC + VXD

Final step: isolated tracks in VXD and in MUD (not used at Final step: isolated tracks in VXD and in MUD (not used at present)present)

Kinks and V0 fitted during the Kalman filteringKinks and V0 fitted during the Kalman filtering All passive materials taken into account for MS and dE/dx All passive materials taken into account for MS and dE/dx

correctionscorrections


Number of cells in barrel: 13924disposed in 236 slices containing 59 cells

Number of cells in each endcap: 3164 disposed in 27 rings

Status of ILCroot: DREAMStatus of ILCroot: DREAM


Bottom view of single cell

Bottom cell size: ~2 cm

Top cell size: ~ 4 cm

Prospective view of clipped cell

Cell length: 150 cm, 100cm

Number of fibers inside each cell: 1980equally subdivided between Scintillating and CerenkovFiber stepping ~2 mm

Status of ILCroot: DREAMStatus of ILCroot: DREAM


Results from DREAM simulation Results from DREAM simulation (V. Di Benedetto)(V. Di Benedetto)

Scintillation and Cerenkov processes well Scintillation and Cerenkov processes well simulatedsimulated

Easily switch from Cu to W (however, need Easily switch from Cu to W (however, need to change calibration values of to change calibration values of SS and and CC))

Pattern recognition in place (nearby cells).Pattern recognition in place (nearby cells).Hadronic showers appear to reproduce the Hadronic showers appear to reproduce the

compensation effect seen in the test module compensation effect seen in the test module (Fluka)(Fluka)

PiD (e/PiD (e///) results are very promising) results are very promising


Fluka vs G3/G4Fluka vs G3/G4

Fluka

Geant3

Geant4

- at 50 GeV in Pb Sphere of 500 cm Radius


MC for DREAMMC for DREAM

In the Bangalore version some 30% energy was In the Bangalore version some 30% energy was not deposited (hadrons only, electrons were OK)not deposited (hadrons only, electrons were OK)

After fine tuning with CERN, 50 GeV After fine tuning with CERN, 50 GeV -- deposits: deposits: 46.5 GeV in Pb with G346.5 GeV in Pb with G3 47.8 GeV in Pb with G4 (QGSP_BERT_HP )47.8 GeV in Pb with G4 (QGSP_BERT_HP ) 45.0 GeV in Pb with G4 (QGSP_BERT )45.0 GeV in Pb with G4 (QGSP_BERT ) 48.1 GeV in Pb with Fluka 48.1 GeV in Pb with Fluka

Punch-through in 1m Cu is clearly visible in the Punch-through in 1m Cu is clearly visible in the event display (should be recovered in the Muon event display (should be recovered in the Muon Spectrometer)Spectrometer)

However, the energy deposited in the Cu is However, the energy deposited in the Cu is about twice than in W.about twice than in W.


Electrons in EndcapsElectrons in Endcaps


Resolution Plots for Resolution Plots for (Barrel only) (Barrel only)

(E)/E=45%/sqrt(E)


Detector layoutDetector layout


ILCroot Event DisplayILCroot Event Display


ILCroot Event Display 2ILCroot Event Display 2


ConclusionsConclusions

Work is proceeding quicklyWork is proceeding quicklyFirst analyses will be shown at ValenciaFirst analyses will be shown at Valencia ILCroot and instructions on the web asap! ILCroot and instructions on the web asap!

october 20th, 2006 a. mazzacane 1 4 th concept software first results

Documents

vxd slide

tpc slide

tpc vxd final step

rings status of ilcroot

dream slide

ilcroot code

detectors pandorapythia

present final step