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Tutorial to make Full Simulation at High Pileup Scenarios

This tutorial illustrates the simulation of neutrino samples with pileup 70 considering upgraded geometry for the pixel detector (4-layers, 3-disks).

Generation of events

We are going to simulate Neutrinos with Pt 2-20 according to this configuration fragment

ssh jruizvar@lxplus5.cern.ch
cmsrel CMSSW_6_1_2_SLHC6_patch1
cd CMSSW_6_1_2_SLHC6_patch1/src
source script.sh

script.sh requires Bash terminal.

Copy the following configure file (in CMSSW_6_1_2_SLHC6_patch1/src)

Before submitting the job to crab using

do a local test

scram b -j 8
cmsRun Neutrino_Pt2to20_gun_cff_py_GEN_SIM.py

Check edmFileUtil Neutrino_Pt2to20_gun_cff_py_GEN_SIM.root. This file is only to test and can be removed ( rm Neutrino_Pt2to20_gun_cff_py_GEN_SIM.root)

Submit to crab

crab -create
crab -submit -c Neutrino_Pt2to20_14TeV

It takes around 15 min to generate 10000 events. 0.2M events can be generated in 20 jobs. After crab getoutput, don't forget

crab -publish -c Neutrino_Pt2to20_14TeV

Create Analyzer

We are going to create an standalone analyzer (no need to checkout external libraries) that can be used with any GEN-SIM sample, not only neutrinos.

ssh jruizvar@lxplus5.cern.ch
cmsrel CMSSW_6_1_2_SLHC6_patch1
cd CMSSW_6_1_2_SLHC6_patch1/src
source script.sh

Same script.sh as above. Make a directory with a dummy name, in this case neutrinoPU70. Create an analyzer respecting the name Pxecal

mkdir neutrinoPU70
mkedanlzr Pxecal
cd Pxecal

Copy to this folder the following files

Run a local test and check the resulting n-tuple Neutrino_PU70_ntuple.root

scram b -j 8
cmsRun pxecal_cfg.py
root -l Neutrino_PU70_ntuple.root
   [0] NtupleMaker->cd()
   [1] t->Draw("sqrt(ClGx*ClGx+ClGy*ClGy):ClGz")
   [2] .q
rm Neutrino_PU70_ntuple.root

If local run succeeds, you can create and submit the jobs

crab -create
crab -submit 1-500 -c Neutrino_PU70_100K_ntuple
crab -submit 501-1000 -c Neutrino_PU70_100K_ntuple

This step is more time consuming than the generation part. No need to publish because the output are n-tuples stored at T2_BR_SPRACE for private analysis.

Example plots

  • Number of pixel cluster for low pileup (neutrino sample with 5000 events)
    lowPU.gif

  • Number of pixel cluster for high pileup (neutrino sample with 5000 events)
    highPU.gif

Exercise

Make the full simulation for a SingleElectronFlatPt5To50 for three pileup scenarios:

  • PU35 (200K events)
  • PU70 (100K events)
  • PU140 (50K events)
Hint:

  • The GEN-SIM step should be done only once.
  • The python configure files should be slightly modified.
  • No need to touch the Pxecal.cc source file.

Simulated events for single electron

Full simulation with CMSSW_6_1_X using steps above. Samples are @ T2_BR_SPRACE.

Step Path to dataset Number of Events
GEN-SIM /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectron_Pt5to50_14TeV_v2/ 200K
PileUP35 /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectron_PU35_20K_ntuple_v4/ 20K
PileUP70 /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectron_PU70_10K_ntuple_v4/ 10K
PileUP140 /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectron_PU140_5K_ntuple_v4/ 5K

New Simulated events for single electron

Files in the table bellow were produced with CMSSW_6_1_2_SLHC6_patch1 from these official GEN-SIM samples (50K events)

/SingleElectronFlatPt0p2To50/UpgFall13-POSTLS261_V2-v1/GEN-SIM

and using the official MinBias samples (30M events)

/MinBias_TuneZ2star_14TeV-pythia6/UpgFall13-POSTLS261_V2-v1/GEN-SIM

To open a merged file in lxplus , inside root mode, one can use

TFile *file = TFile::Open("dcap://osg-se.sprace.org.br:/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/MergedNtuples/SingleElectron_Pt2to50_noPU_ntuple.root");

Ntuples listed here are located at T2_SPRACE and contain information about both 5x5 and 1x1 EM crystals.

Scenario Format Size Events Details Paths
No PileUP DIGIRAW 12GB 50K Location /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_noPileUP_50K_DIGI_RAW_v6/a49c986a608faae0f4ff11329e2bb83f/
datasetpath /SingleElectronFlatPt0p2To50/adesouza-SingleElectron_noPileUP_50K_DIGI_RAW_v6-a49c986a608faae0f4ff11329e2bb83f/USER
PileUP35 DIGIRAW
110GB 50K
Location

/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU35_50K_DIGI_RAW_v6/61196276663e836a1b830c8b84a619d4/

datasetpath

/SingleElectronFlatPt0p2To50/adesouza-SingleElectron_PU35_50K_DIGI_RAW_v6-61196276663e836a1b830c8b84a619d4/USER

PileUP70 DIGIRAW 210GB 50K
Location

/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU35_50K_DIGI_RAW_v6/61196276663e836a1b830c8b84a619d4/

datasetpath
/SingleElectronFlatPt0p2To50/adesouza-SingleElectron_PU70_50K_DIGI_RAW_v6-3752475e524a60330e4a83a2952b3625/USER
PileUP140 DIGIRAW 400GB 50K
Location

/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU140_50K_DIGI_RAW_v6/f74d2f3945f4866a2ea25695b38d79f0/

datasetpath
/SingleElectronFlatPt0p2To50/adesouza-SingleElectron_PU140_50K_DIGI_RAW_v6-f74d2f3945f4866a2ea25695b38d79f0/USER






No PileUP Ntuple 24MB 50K
Location
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_noPileUP_50K_ntuple_v6/7fef2304deb2968f78764a0244f910ee/
Merged file /pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/MergedNtuples/SingleElectron_Pt2to50_noPU_ntuple.root
PileUP35 Ntuple 5.6GB 50K
Location
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU35_50K_ntuple_v6/7fef2304deb2968f78764a0244f910ee/
Merged file
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/MergedNtuples/SingleElectron_Pt2to50_PU35_ntuple_50K.root
PileUP70 Ntuple 11GB 50K
Location
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU70_50K_ntuple_v6/7fef2304deb2968f78764a0244f910ee/
Merged file
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/MergedNtuples/SingleElectron_Pt2to50_PU70_ntuple_50K.root
PileUP140 Ntuple 22GB 50K
Location
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/SingleElectron_PU140_50K_ntuple_v6/7fef2304deb2968f78764a0244f910ee/
Merged file
/pnfs/sprace.org.br/data/cms/store/user/adesouza/SingleElectronFlatPt0p2To50/MergedNtuples/SingleElectron_Pt2to50_PU140_ntuple_50K.root

Topic attachments
I Attachment History Action Size Date Who Comment
Texttxt BuildFile.xml.txt r1 manage 0.4 K 2013-08-28 - 07:26 JoseRuiz BuildFile
Texttxt MinBiasSource.py.txt r1 manage 108.2 K 2013-08-28 - 05:29 JoseRuiz Official MinBias
Texttxt Neutrino_Pt2to20_gun_cff_py_GEN_SIM.py.txt r1 manage 4.8 K 2013-08-28 - 06:22 JoseRuiz Configure file to make GEN-SIM
Unknown file formatcc Pxecal.cc r1 manage 16.6 K 2013-09-12 - 02:43 JoseRuiz Analyzer
PNGpng Screen_Shot_2013-08-28_at_10.02.51_AM.png r1 manage 84.1 K 2013-08-28 - 08:05 JoseRuiz Generator fragment
Unknown file formatcfg crab.cfg r1 manage 0.8 K 2013-08-28 - 05:28 JoseRuiz Crab configure file
Unknown file formatcfg crabGENSIM.cfg r1 manage 0.7 K 2013-08-28 - 06:30 JoseRuiz Crab configure file to generate and publish GEN-SIM
GIFgif highPU.gif r1 manage 130.5 K 2013-09-10 - 21:55 JoseRuiz Number of pixel cluster for high pileup scenarios
GIFgif lowPU.gif r1 manage 129.4 K 2013-09-10 - 21:56 JoseRuiz Number of pixel cluster for low pileup scenarios:
Texttxt pxecal_cfg.py.txt r1 manage 6.4 K 2013-08-28 - 05:29 JoseRuiz Configure file
Unix shell scriptsh script.sh r1 manage 0.1 K 2013-08-28 - 05:29 JoseRuiz Setup crab at lxplus
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Topic revision: r9 - 2013-10-18 - assantos
 

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