2005/07/11 (Tue) 8th ACFA meeting @Daegu

Full simulator study of muon detector (and calorimeter)

8th ACFA Workshop at Daegu, Korea2005/07/12 (Tue)

Hiroaki Ono (Niigata University)with ACFA-sim-j members

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Muon detector status in Full simulator

• Jupiter (MC generator)– Installation of muon geometry, magnetic field to the generator was finished(Outside of the Solenoid, as a return yoke)

• Satellites (Analysis part)– smear and muID is under construction.– Exact hit (MC truth) can be analyze.

I will report the current status of Muon detector in full simulator.

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Jupiter generator part

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Geometry of Muon detector

• Active layer (10cm-thick)– air : Default, reserved Gas chamber)– scintillator : test version

• Absorber (40cm-thick)– Iron (as a return yoke)

• Barrel : 4 layers, Endcap : 5+2(inner) layers• Octagonal shape in the phi direction• Alternately placed barrel and endcap layer

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Geometry of Muon detector

700

[cm]

375

430

530845

450

2 layers placed inside of the solenoid coil.Alternately placed at diagonal region.

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Magnetic field for full simulator

Magnetic field/ Flux line Unit: Tesla

Return Yoke magnetic field Study(KEK H.Yamaoka-san)

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Magnetic field in Jupiter (MUD)

1 to 2 TeslaRoughly installed in return-yoke

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Magnetic field test by muon

• - 10 GeV • z=0, y=1 direction (barrel direction)• Opposite curveture at th

e inside of solenoid and outside.

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Satellites analysis part

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Muon detector standard tests

•Calibration•Leakage energy from CAL

(punch through)•e+e-→ZH→bb event analysis•Muon finding ( ID) efficiency (still under study)

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Calibration of MUD by muon

calibration (MIP)

•10GeV -

Injected to barrel direction•Energy deposit in each layer > 10 MeV

Threshold set to 10 MeV (MIP)for the muon finding (muID)

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Muon generated inside of CAL

If we use muon detector for muon ID, it can be a miss PID due to the muon created inside of Calorimeter.

As a first step, we check the number of muons created inside of the calorimeter.

ECM = 300 GeV, Events = 500 event

e+e-→ZH →+bb

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Hit informations in CAL/MUD

1 2

CAL inner

CAL outer

MUD Inner

created inside of the CAL

Check the PDG code at CAL front and MUD front

from IP

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Compare muon at CAL/MUD front

generated before the CAL212 eventsTotal Energy : 21.4 GeV(mean)(Max ～ 140 GeV)

generated inside of the CAL17 eventsTotal Energy : Less than 10 GeV

e+e-→ZH →+ bb (Ecm : 300GeV, 500 events)

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Pion leakage from CalorimeterPion single beam energy scan from 2 ～ 300 GeV

Number of pion events tagged at the MUD front

Total energy measured at the MUD front [GeV]

20 GeV : 11 events300 GeV : 680 events

Number of pions leaked from CAL increase from the incident energy grater than 20 GeV

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Pion leak from the Calorimeter

20GeV

Number of pions at MUD front(pion ID checked by PDG code)

Mean energy of Pions at MUD front(pion ID checked by PDG code)

20GeV

Low energy pi increaseat high energy part.

Pion single beam energy scan from 2 to 300 GeV

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Muon finding methods (Under construction) Search MIP peak in the MUD

(threshold > 10MeV)

All layer passing event required

Check mother track CAL(Front/Out)

MUD

CALTrack matching with tracker

Tracker Under construction !

2005/07/11 (Tue) 8th ACFA meeting @Daegu

Summary and next steps

•We finish the installation of MUD geometry, Magnetic field to the Jupiter (MC G4 generator) •Under construction of the Satellites analysis part.

•BUG fix should be improved.•MUD change to the tracker base Muon self tracking in MUD and connect to tracker•Muon ID efficiency by finding methods.

Next step...

Current status...