1) Embedding request

The embedding request (Jan's blog)

was approved by spin PWG and Jim made the official request

Nov 13, PWGC set priority as #3. PWGC e-mail

Nov 30
All embedding jobs
W-Pythia + ZB embedding job

January 5
official drupal page with all embedding requests


2) Best guess of BFC options

-------------- Jan , hard pp , no pipelup

root4star -q -b 'bfc.C(5,"MakeEvent,ITTF,NoSsdIt,NoSvtIt,Idst,VFPPVnoCTB,logger,-EventQA,-dstout,tags,Tree,EvOut,analysis,dEdxY2,IdTruth,useInTracker,-hitfilt,tpcDB,TpcHitMover,TpxClu,McAna,fzin,y2009,tpcrs,sdt20090428.141700,geant,geantout,beamLine,eemcDb,McEvOut,bigbig,emcY2,EEfs,bbcSim,ctf,CMuDST","../TpcRS-rev2/test_QCDprod.fzd")' >&LogN

----------- Jan add pileup of 1%

root4star -q -b 'bfc.C(5,"MakeEvent,ITTF,NoSsdIt,NoSvtIt,Idst,VFPPVnoCTB,logger,-EventQA,-dstout,tags,Tree,EvOut,analysis,dEdxY2,IdTruth,useInTracker,-hitfilt,tpcDB,TpcHitMover,TpxClu,McAna,fzin,y2009,tpcrs,sdt20090428.141700,geant,geantout,beamLine,eemcDb,McEvOut,bigbig,emcY2,EEfs,bbcSim,ctf,CMuDST","../TpcRS-rev2/test_QCDprod.fzd; gfile B ../TpcRS-rev2/test_QCDminb.fzd; mode BTOF back 1; mode TPCE back 3761376; gback 470 470 0.01 106. 1.5; rndm 10 1200")' >&LogP2

-----------
For the real data, this is the chain we used for the official production:
bfc.C(200,"DbV20090817 pp2009a ITTF BEmcChkStat QAalltrigs btofDat Corr3 OSpaceZ2 OGridLeak3D beamLine -VFMinuit VFPPVnoCTB -dstout","st_W_10087028_raw_4180001.daq")


3) pre-embedding data vs. M-C comparison
  • Justin compared TPC - looks tragic Nov 10
  • Ilya - BTOW SF for MC - has some eta dependence - Nov 10 fig 4a black curve

4) Optimal GSTAR+BFC settings for W-embedding, simulations

(aimed toward best achievable compatibility with pp500 data)

a) Pythia tune A for W-Pythia events. TBD for QCD-Pythia events

b) M-C W-event processed by GSTAR , output : .fzd

Setup options:

set field = "field=-5.0" # full reverse field"
set myGeom = y2009a
detp geom $myGeom $field hadr_on

magnetic filed

time stamp=Apr 1, 2009

detectors

TPC

BTOW

ETOW

BSMD

BPRS

EM Sampling
fraction

? atm pressure?
to compute geantDE

compute geantDE->ADC w/
mSF[0,1,2] = {1/0.07,0,0}
in StEmcSimpleSimulator.cxx

compute geantDE->ADC
w/ SF=0.05 ? (as is)

geantDE stored in muDst
(no atm pressure dependence)

geantDE stored in muDst

DB status table *)

N/A ?

ideal: 100% working

ideal

N/A

N/A

DB pedestals

not used?

not used

not used

N/A

N/A

container w/ output hits

geantDE/track segment

ADC/tower

ADC/tower

geantDE/strip

geantDE/tile

*) Note, for the real sub-event the embedding will copy 1:1 its content to the output muDst

c) Setting of 3 stages of BFC_mixer, 2 input sub-events (.daq , .fzd), 1 output event (muDst)

c1) processing of real sub-event, before mixing

detectors

TPC

BTOW

ETOW

BSMD

BPRS

input=output 1:1 *)

ADC/pad

ADC/tower

ADC/tower

ADC/strip **)

ADC/tile **)

any DB table

not used

not used

not used

not used

not used

*) all channels as in 'raw' event, contain pedestal from real event
**) is zero suppressed & pedestal corrected on-line

c2) processing of M-C sub-event, before mixing

time stamp

from real sub-event

detectors

TPC

BTOW

ETOW

BSMD

BPRS

input container

geantDE/track segment

ADC/tower

ADC/tower

geantDE/strip

geantDE/tile

gains

TpcRS ADC*2.6
see Justin's study

N/A

N/A

geantDE->ADC
force 5GeV electron at eta=0.5
results w/ ADC=500

force 5GeV muon at eta=0.5
results w/ ADC=30

DB pedestal

not used ?

not used

not used

not used

not used

DB status table

ideal: 100% working

ideal

ideal

ideal

ideal

output
only fired elements

ADC/pad

ADC/tower

ADC/tower

ADC/strip

ADC/tile

c3) Mixing of real & M-C sub-events
Simply add ADCs from both streams

detectors

TPC

BTOW

ETOW

BSMD

BPRS

input (2 streams)

ADC/pad

ADC/tower

ADC/tower

ADC/tower

ADC/tile

output *)

ADC/pad

ADC/tower

ADC/tower

ADC/tower **)

ADC/tile **)

*) for all existing elements, pedestals included via real sub-event
**) any pixel present in only one sub-event is passed to the output event as is.

c4) BFC setting to reco mixed event
starver SL09f
Chain options: "pp2009c,ITTF,VFPPVnoCTB,BEmcChkStat,btof,beamLine,Corr3,OSpaceZ2,OGridLeak3D"

time stamp

from real sub-event

BFC options

as for real pp500 data production

detectors

TPC

BTOW

ETOW

BSMD

BPRS

input

ADC/pad

ADC/tower

ADC/strip

ADC/tile

ADC/tile

DB gains

as for data

N/A

N/A

N/A

N/A

DB status table

as for data

as for data

as for data

N/A

N/A

DB pedestal

as for data

as for data

as for data

N/A

N/A

cluster finder
and tracking

as for data

N/A

N/A

N/A

N/A

vertex finder

as for data

as for data

as for data

N/A

N/A

output muDst

tracks+vertex

ADC/tower *)

ADC/tower *)

ADC/strip **) +
MC geantDE

ADC/tile **)+
MC geantDE

*) all channels as in 'raw' event, contain pedestal from real event
**) is zero suppressed & pedestal corrected

Weighting of ZB events, blg w/ details

--------------------

Justin recomputed event weights in September 2010 : http://drupal.star.bnl.gov/STAR/blog/stevens4/2010/sep/17/zb-event-weighting-run-9-w-x-section-embedding-request

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