27 June 2006 Shuei YAMADA, MEG PSI 1 MEG Software Status and Prospects MEG Software group.

27 June 2006Shuei YAMADA, MEG review @ PSI 1

MEG SoftwareStatus and Prospects

MEG Software group


Contents

Software documentationMC updates WF simulation and analysis tool updates ComputingMEG software releaseMEG data challenge


Software documentation


InstallationMC introduction

User’s guide

FAQ

Developer’sguide Source code

browsing

MEGWiki


Document generation

HTML docs are generated from C++ source codeGuide lines to write comment : http://root.cern.ch/root/Conventions.htmlGenerated docs from the HEAD version available on :

http://meg.web.psi.ch/restricted/software/meganalyzer_htmldoc/ClassIndex.html andhttp://meg.web.psi.ch/restricted/software/meganalyzer_htmldoc/ClassIndex.html

Sourc

eHTM

L

http://root.cern.ch/root/Conventions.html

http://meg.web.psi.ch/restricted/software/meganalyzer_htmldoc/ClassIndex.html

http://meg.web.psi.ch/restricted/software/meganalyzer_htmldoc/ClassIndex.html


MC updates


Event generationMore calibrationsRadiative decayCosmic ray (preliminary)

More precise DCH hitsTICP/TICZ output to be digitizedUpdates and fixes in geometries

LXe outer wall : 846 PMTs in totalUpstream/downstream beam elementsDCH dimensionTICZ/TICP

TC beam test MC

MC updates


Items ready for productionEvent generator

Signale+ + from radiative decaye+ from Michel decaye+ from radiative decay from radiative decayCalibrations

AlphaNie+e- pair from W converter

Cosmic ray (preliminary)ZEBRA output to be digitized in megbartender

All the sub-detectors are ready: LXe, DC, TC(Phi), TC(Z)Preliminary trigger simulation


Good level of sophistication, but items to be done still exist…Event generator

AIF Calibrations

LEDLi(p,)0

Cosmic rayPreliminary – zenith angle distribution is readyTo be done : azimuth angle distribution, energy spectrum

Neutron backgrounds for LXeBackground from beam

Crosscheck with beam testTiming counterDrift chamber


Waveform simulation and analysis tool updates


Event display

More displays : tracks and energy deposits


Xe Waveform display

Expected To be used also for online


DCH 2D display


( )

MEGWaveform class

Reorganization of waveform analysis/simulation classEach sub-detector/analysis/simulation was using its own waveform class

MEGWaveformMEGDRSWaveform

MEGTriggerWaveform

MEGXECDRSWaveform

MEGXECTriggerWaveform

Basic operationsadding/subtracingDrawPrint…

Detector independent operationsADC/TDCFrequency filteringReflectionMoving averageSplitter responseDRS simulation…

Detector specific operationsIf neededPMT/APD/Wire/Pad sim.Fitting…


Standard system of unitsDiscussed and decided the standard units for MC and offline analysisDefines internal expression in programs

constant valuesglobal variable and Fortran common blocksreturn value and arguments of functions/subroutines/methodsData file (ZEBRA, MIDAS, ROOT, …)

Any unit for human interfacehistograms, plotsConfiguration in GUI panelWarning messages

Units based on GEANT3

Base units * Energy * Time * Length * Angle * Voltage * Temperature

GeVsecondcentimeterdegreeVKelvin


Xe analysis updates & schedules

UpdatesLinear fit & MINUIT fit reconstruction were implemented (by Giovanni)Pattern recognition (both time and space) for pile-up events (by Yasuko)

To be doneQsum-based reconstructionWaveform spectrum analysis in progressTiming reconstructionCalibration & monitoring w/ alpha, LED, pi0, proton, RD, and neutrion

ScheduleFinish items listed above before starting MC mass productionValidate analysis tools in August-September


DC offline updates and To-dos

AnalyzerKalman filter reconstructionCOBRA 3D B-field based on measurement

BartenderImplemented most physical effects in wire signal simulation

Drift electron arrival times, avalanche and current pulse shape, charge division, preamp, cable propagation and reflection, DRS responseTo be checked against 55Fe Source

To be donePad simulation was just started

Precise charge integration of induced chargeSignal electronic transformationCompare analytic formula for reflected signal w/ measured data…


DC Wire output

right

left


Status of TCAnalysis

Very preliminary stage - No algorithms implementedAnalysis of test beams (@Frascati & @PSI) are underway MC should be validated

BartenderTC(Phi) waveform - some physical effects implemented

Need tuning and corrections to mach with electronicsCode copied from LXe – differences in electronics chain

TC(Z) waveform simulation – not started yet

New TC organizationCoordination : P.W. CattaneoMEG MC simulation (GEM): S. DussoniMEG Digitization (Bartender): A. BarchiesiMEG Analysis (Analyzer): P.W. Cattaneo, D. ZanelloTest Beam MC simulation: S. DussoniTest Beam Analysis : A. Barchiesi, D. Zanello


Status of trigger simulationμeγ mode partly implemented

Missing itemsTICP waveformTICZ waveform

Coming soonXe trigger waveform and discriminationXe and TC timing matching ( Earliest TICP hit is used as TC timing )Xe and TC direction matching ( Earliest TICP hit is used as TC position )

Should be replaced with PMT/APD output


Computing


Merlin3 cluster @ PSIMerlin3 : 54 Cores + 14TBytes Disk + batch (SGE : Sun Grid Engine)No modification needed for MEG software

Write a script for SGE and submit a job

Potentiality of use of GRIDNo modification needed for MEG softwareSuccessfully tested for MC production (only 10 events)GRID access is limited to Virtual Organizations (VOs) : cms, atlas, gilda, … Need more tests

#!/bin/bash### Change to the current working directory:#$ -cwd### Job name: #$ -N simple_arrayMY_HOST=`hostname`MY_DATE=`date`echo "Running on $MY_HOST at $MY_DATE"echo "Running environment:"envecho "========================================"# Put your single-CPU script here./Linux/gem gem.cards


Offline cluster for MEG

Ordered on June 14th : 20 cores + 30 TB disk※ MEG requirements : 64 cores + 100 TB disk in totalEasily extensibleRedundancy through GFS/GPFS file systemsGBit link to online cluster requested

Sun Fire x4100 quad core 4 GB





Fibe

r Cha

nnel

Swi

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15 x 500 GB SATA

GBit

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rnet


DatabaseTwo databases : MySQL and sqlite3

MySQL needs networksqlite3 for stand-alone environmentEasy conversion from MySQL to sqlite3

Test database is available inside PSIRun tableLXe

Geometrycable configurationPMT test resultLinear-fit parameter

Requested tables for TC, DC and DRSDiscussions continuing on ELOG/Offline

DB mirroringMC run tableTrigger configuration


MEG software release


On June 19th: meg-1.0.0 released

Released even though couple items left behind- We cannot wait for everything being readyPerform MEG Data Challenge

Feedbacks are welcomeBug reportsRequestsQuestions…

Next release (meg-1.1.0 ?) To be used for MC mass productionRelease by the end of July

Start MC mass production from August


Release strategy

Release independent of MEG

ROME Online

MEGMCMEGBartenderMEGAnalyzer

MEGMEG

RepositoryROME Repository

All the MEG software are tagged togetherRelease early, release often

When detector setup changedWhen data structure changedWhen interface changed

ROME, ROOT, CERNLIB, MySQL, etc…Some amount of bug fixes/new feature accumulated

Accumulate for one month? Announcement posted ～ 1week in advance

Responsible persons have to make sure the subproject is in a good shape at that date


Retaining compatibility :Data structure

Compatibilities btw. MC, Bartender and AnalyzerMost probable point to screw up the analysisChanging data structure implies changes to all code using that data

Make sure that newer Bartender/Analyzer can read old MC dataunrealistic to perform MC production for every different data structure Append new data into ZEBRA is less problematicRemoving from/changing order of/inserting data ZEBRA are problematic

MCA⇒B

bartenderA⇒B

analyzerA⇒B


MEG data challenge


MEG data challengeTest throughout MC production, Bartender, and Analyzer

Test meg-1.0.0 : find out unknown missing items, problems, …Realistic estimate of CPU/DiskASAP

Perform before MC mass productionStart with event samples available

Signal, e+ from Michel, RD, Calibrations, CR, …104-105 events/event type

～ 1.5GBytes/104event for signal event～ 1day/104event for signal event

Available resources at moment : merlin3 cluster @ PSICPU : 4core Opterons x14, 2.4GHzDisk : 14TBytes


End of Slides


Dataμeγ trigger 2Hz * 20days = 4M events 〜 3TBCalibration

Alpha, LED : 200MB/run * 4times/day 〜 50GBPi0, RD, neutron, protonDAQ w/o LXe in late summer

Need discussion for the amount of calibration data(10Hz * 20days = 15TB, too big !!)

MCRD 4M event 〜 4.5TB Michel 1M event 〜 1TB Michel 1M event 〜 1TB μeγ 1M events 〜 1TBCalibration 2TB

Storage needed for this year

( w/o waveform )

3 TB+

calibration

( low intensity )

10 TB 20 TB ?


CPU estimateMC production + digitizing > 20 CPUs

6-8 seconds/event * 9M event = 625-833 daysLow intensity beam : single RD is dominant

Waveform fitting 2 CPUsfitting 0.5msec*600 wf/event = 0.3sec/event0.3 sec/event * 1.2 M event = 1.4 daysReduction of 1/10 by pre-selection assumed

Analysis 6 CPUsParameter training (Linear fit)CalibrationPre-selectionWaveform fast analysis (T,Q conversion) 0.5 event/secReconstruction 0.5 sec/event ?

To be consideredTime for submitting job – negligible?Time for tape accessMC and analysis do not run simultaneously

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27 June 2006 Shuei YAMADA, MEG PSI 1 MEG Software Status and Prospects MEG Software group.

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