1 acfa8, july 11 - 14, 2005, youngjoon kwon (yonsei univ.) simulation / recon. workgroup summary for...

ACFA8, July 11 - 14, 2005, Youngjoon Kwon (Yonsei Univ.) 1

Simulation / Recon.

Workgroup summary for ACFA8

The Framework for Sim./Recon. Status report

Activity Report Tracking : Performance / IT config. CAL : Shower model / Perform. / PFA MUD : Full sim. Interface to LCBDS

Youngjoon Kwon (Yonsei Univ.)

A. Miyamoto

A. Yamaguchi,E. Won,

J.M. Chang, Y. Yamaguchi, S. Yamamoto,

H. Ono


HY’s Charge to the ACFA8

S/W Framework & the Tools

What a good framework does …

*

* Copied from Miyamoto-san’s talk


QuickSim – update & performance

GLD-V2 : a new parameter file Beam pipe: r=1.5cm, Be, 25m Beam pipe & VTX layer#1 : not realistic yet TPC, CAL, etc.

Tracker performance


QuickSim – performance

e+e- ZH jets)

a slight improv’t. over other versions,JLC2T, GLC3T


Tools for Full Sim. / Recon.

Jupiter & Satellites

a framework based on JSF/ROOT & Geant4 7.0p1JSF – the analysis flow controller based on ROOTThe release includes event generators, QuickSim, and event display


Jupiter Geometry

Solenoid

Hadron Calorimeter

Muon/Iron

Elemag. Calorimeter

IT VTX

Forward Cal.

QC1

TPC

initially based on GLD_v1 1.8cm, VTX+IT+TPC, 3T, etc. (not optimized yet…)

(+) new IR/VTX for 2mrad x-ing Work in progress for 20 mrad x-ing, FT, FCal, BCal

…


Calorimeter Geometry

Activity Report- tracking


Tracking Performance (A. Yamaguchi)

To set performance goals for TPC in Pt resolution IP resolution Two-track separation

Use Jupiter with a cheated version of track-finder Track-fitting by Kalman filter Hybrid track-fitting with TPC+IT+VTX, with

• Energy loss• Multiple scattering


IP resolution


2-track sep. study


IT configuration (E. Won)

GLD S/W & Sim. activities in Korea Configuration options for barrel IT Endcap IT – first thoughts


Korean activities – just started


Theme – with or w/o IT


Variations


End-cap IT – first thoughts

Activity Report- CAL & MUD


Shower Model Study (J. M. Chang)

EM shower models

Had shower models


Compared for e-


Compared for -


CAL full-sim. study (Y. Yamaguchi)

Full GLD sim, but w/ ideal geometry Every tower pointing to IP; and no crasks

Material study Performance test

EM CAL / HD CAL Test of fine-segmented, digital CAL


EM CAL performance


HD CAL performance

Data vs. MC?


Fine-segmented CAL


Performance of Digital CAL

Need: clustering algorithm for Digital CAL


Study w/ cheated PFA (S. Yamamoto)

Cheated PFA? Why? – to assess ultimate jet-energy resolution How

Jet energy resolution study using c-PFA

CAL & tracker resolution Kink Acceptance hole?


Mz resolution for @ 91.187 GeV; width = 0?

Kink-treatment schemes

sigma = 2.79 w/o kink treatment

qqZ


Det. Resolution effects


=1.16 GeV unexplained


MUD full-sim. study (H. Ono)

Implemented geometry & B field MUD response study Smearing & -finding under

construction


Geometry of MUD

Active layer (10cm-thick, not segmented)

Air : Default, Gas chamber reserved Scintillator : test version

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

Barrel : 4 layers Endcap : 5+2(inner) layers Alternately placed barrel and

endcap layer Octagonal shape in the phi

direction Z direction

X-Y direction


B-field mapping

“B-field direction and magnituderoughly followed Yamaoka-san’s results”

4. MUD response with CAL information

1. Observed muon signal by muon detector2. Muons passing through the CAL3. Pion leakage from CAL (punch through)

e+e-→Z→qq (2 jets) event check

Single beam () test

4. Number of muons produced in Jets or created inside of the CAL

Unfortunately, solenoid is set to air at Jupiter default.I checked the interaction length as only 7.10 (CAL)

Ignored the solenoid material in this study


from jets


Summary Since I am not a good person to make a

summary of summaries, I will quote one of the Miyamoto-san’s LCWS2005 slides

My thanks to all those who contributed to this group and gave very nice presentations!

1 acfa8, july 11 - 14, 2005, youngjoon kwon (yonsei univ.) simulation / recon. workgroup summary for...

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