9/14/2001d0 simulation tasks q.li 1 simulation tasks status qizhong li fermilab sept. 14, 2001 d0...

9/14/2001 D0 Simulation Tasks Q.Li

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Simulation TasksStatus

Qizhong Li

Fermilab

Sept. 14, 2001

D0 Collaboration Meeting


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Outline:

• P10 production release – D0gstar– D0Sim– D0Trigsim

• Plans for p11 production release– D0gstar/D0Sim/D0TrigSim– D0Raw2Sim– Pmcs


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D0gstar

D0gstar -- full GEANT simulation (lead by Shuichi Kunori)

In p09 and p10 production releases:– All detectors, including LUMI and FPD.– New 3D magnetic field map.

– New interface to access to the field configuration (get map version, get solenoid and toroid polarity).

– Default ECUTs for calorimeter plate level geometry were lowered to get more accurate response.


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D0gstar(cont.)

– A new option to swim very forward p/pbar to FPD in double precision was added. This option is OFF as default.

– New access methods on the option of FPD geometry and tracking in event information.

– Changed from GEANT 3.21.12 to GEANT 3.21.13 (Geant bug fix).


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D0sim

• D0Sim (lead by Serban & Qizhong), uses D0gstar output to produce simulated raw data events.

• It performs following functions: – Merge hard scatter and minbias events

– Add calorimeter pileup from previous events

– Make L1CalTTowerChunk for L1 simulation

– Add calorimeter noise

– Add SMT noise and inefficiencies

– Add CFT noise and inefficiencies

– Add Muon noise and inefficiencies

– Make a RawDataChunk

– Drop all D0GStar chunks


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D0sim production releases

• P08.12.00:

pileup + CalWeight + cps, fps, cft, smt digitization + muon raw data + CalDataChunk + RawDataChunk + L1CalTTChunk

RawDataChunk: cal+muo+smt+cps+cft+fps

CalDataChunk:

uses cal+preshower optimized weights

Only FPD and L0 still missing.


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D0sim releases (cont.)

• P09.10.00:– Turned on smt noise simulation– use cal only optimized weights in

L1CalTTChunk.

– Handle both mixture and plate geometry.

• P10.03.00:

– CalDataChunk uses cal only optimized weights

– added code to handle pseudo SimChunks.


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CPU Time

• D0gstar: (sec/event on d0mino)

Plate uses a factor of 3 more CPU than mixture. 256 788 ttbar

168 450 Z ee

mixture plate


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CPU Time

• D0sim : (sec/event on d0mino)

2.5mb overlap uses a factor of 2-3 more CPU than no minbias.

Plate uses 15-30% more CPU than mixture.

176 99 193 109ttbar

122 49 158 62Z->ee

Mix

2.5mb

Mix

0mb

Plate

2.5mb

Plate

0mb


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Production release certification procedure

• Generate MC events using D0gstar/D0sim:

• Test RawDataChunk by running each subdetector examine in offline mode.

• Run Sim_exam, compare histograms.

2.5 mb, 0 mb2.5 mb, 0 mbSingle e

2.5 mb, 0 mb2.5 mb, 0 mbttbar

2.5 mb, 0 mb2.5 mb, 0 mbZ

2.5 mb, 0 mb2.5 mb, 0 mbZ

2.5 mb, 0 mb2.5 mb, 0 mbZ ee

mixtureplate


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• SMT examine plots

(from Elizaveta)


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ttbar 2.5 mb mixure vs plate in calorimeter

<Pt in cells> in the different layers of calo

plate mix

EM1 0.019 0.018

EM2 0.014 0.015

EM3 0.013 0.013

EM4 0.020 0.021

Fine hadr 0.025 0.025

Coarse hadr 0.031 0.031


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pT in cells (ttbar 2.5mb plate)


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pT in cells (ttbar 2.5mb mixture)


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ttbar 2.5 mb mixture vs plate in calorimeter

<Energy in layers> in the different layers of calorimeter (GeV)

plate mix

EM1 60.0 49.6 10 GeV difference

EM2 25.9 28.1

EM3 62.3 60.0

EM4 46.8 46.2

Fine hadr na na (overflow)

Coarse hadr 19.0 24.4


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Etot in layer (ttbar 2.5mb plate)


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Etot in layer (ttbar 2.5mb mixture)


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ttbar 2.5 mb mixture vs plate in calorimeter

<# of hit cells> in the different layers of calorimeter

plate mix

EM1 2475 2114 15% more cells

in plate

EM2 2259 2297

EM3 na na (overflow)

EM4 2265 2363

Fine hadr 5900 5416

Coarse hadr 1296 1387


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D0TrigSim

• The trigger simulation program, D0TrigSim, includes L1/L2 and L3 simulation.

• This effort is lead by Serban and Dugan Oneil.

• The main cvs package is d0trigsim. L1/L2 default config is in tsim_l1l2. L3 default config is in tsim_l3.

• A new script runD0TrigSim is a trigsim wapper to be used to run the executable. Features include:– setup up all necessary config files– allows use of xml trigger list


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D0TrigSim and the Trigger Database

• The design has always been that users grab a trigger list from the trigger database (or make a new one), hand that list to trigsim and wait for the results.

How close are we?

• The trigger database is now in production. A 20 trigger list has been written for MC use.

• The new script will allow users to take any xml file generated from the trigger database, and send it through coorsim.

• Coorsim creates configuration files which can be read by d0trigsim.

• D0trigsim runs, creates an ntuple.

The chain is now in place! Need more testing, but great progress has been made.


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Release status

• P06.00.01 - The 1st production release... too old.

• P08.12.00 - Stable version. It has run on Nx100K events without crashing. … getting old.

The above versions didn’t use cal trigger tower weights to reconstruct energy.

• P09.08.00 - not stable, but use cal weights optimized for plate geometry.

• P10.03.00 - The most recent release made this week. More functionality, need test.

For example,

Single e

(PT = 20 GeV)

Mean RMS

p08 17.1 1.6

P09-mix 18.8 2.5

P09-plate 19.1 2.0


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• Single e pT plot from p10 mix & plate compared with old release.


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D0TrigSim in p10

• P10 contains a lot of big changes for d0trigsim infrastructure. For example L1/L2 changes to run on real data:

– l1l2unpacker learns VRB format.

– more analyze packages read directly from RDC (l1cal, l1muon, l2caljet, l2calmet, l2calem, l2cps, l2gbl).

– tsim_l1ft completely rewrites L3 output classes to better emulate real data. New unpacker to be written for l1ft analyze package and examine.

• More functionality added to l2gbl (track

match), L3 filter/tools, L2errorlogger

integration, etc.


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D0TrigSim P10 certification

• Run d0trigsim on p09.08.00 MC reco certification samples:

process # of events

ttbar 1kWH 1ksingle e 15ksingle 10k

QCD (pT>20) 2k

Z bb ~200

• Memory use and CPU time:

ttbar single Memory max 125Mb 115Mb

L1/L2 time 2.1s/evt 0.6s/evt L3 time 23.7s/evt 7.4s/evt

Total CPU 27.2s/evt 8.3s/evt


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• P10 plot for the number of L2 trigger bits passed


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• P10 plot for the fired L2 trigger bit

(L2 plots are from Oneil)


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Plan for p11production release

• P11 production release schedule:

Oct 15, 2001: All major improvements to D0gstar, D0SIM, TrigSim and L3 tools MUST be released.

Oct 29, 2001: All major improvements to D0reco MUST be released.

Nov 26, 2001: Production version is created, and formal certification begins.

Dec. 21, 2001: Certification finishes.


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Plan for p11(cont.)

• D0gstar: – Tune parameters for GEANT with real

data.

– Adjust ECUT values after studying the low energy particle effects.

– Remove bugs.

• D0Sim:

– get more realistic minbias overlap and noise simulation by using real minbias data overlapping on MC events. Use new program D0Raw2Sim


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Plan for p11 (cont.)D0Raw2Sim:• Intended to produce minbias files from real

data for merging with MC events in D0Sim.

• Necessary steps:

1) Unpack RawDataChunk

2) Convert unpacked chunk to digi chunks

3) convert digi chunks to pseudo SimXXXHit chunks

4) Make L1CalTTChunk

Step 1) and 2) handled by d0reco packages.

All packages for step 3) are ready and released.

For calorimeter need to make

MC CalDataChunk == data CalDataChunk

RawDataChunk L1CalTTChunk


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Plan for p11 (cont.)D0TrigSim:

– all L1 packages pack/unpack like real data

– all L1 packages work in "pass-through" mode

– L1FPS joins simulation

– all L2 analyze packages work directly on real data

– L2STT joins simulation

– XML files from trigger database

– d0_analyze works fully (integrates mc_analyze, trigsim_analyze and reco_analyze outputs into one root tree)


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Plan for p11 (cont.)

• Pmcs -- Fast Monte Carlo (Sarah Eno & Elemer Nagy)

• The general framework of PMCS is in place and the current work focuses on providing the smearing functions for the various physics objects.

• Major effort now to put pmcs output into d0phyobj chunk, and to simulate the variables in chunk properly.

• A first version of PMCS for general use is expected for p11.


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Summary

• P10 D0gstar/D0Sim/D0TrigSim are ready to be used to generate big sets of Monte Carlo events for physics use.

• A lot of progress and improvements.• Working hard on preparing p11

production release.• Pmcs will be ready for physics use

soon.• Our goal is to make the Monte Carlo

simulation as close to real data as possible.

9/14/2001d0 simulation tasks q.li 1 simulation tasks status qizhong li fermilab sept. 14, 2001 d0...

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