sPHENIX is a new detector at RHIC.

["Huang, Jin" <jhuang AT bnl.gov>]

Minutes also available on agenda page: https://indico.bnl.gov/conferenceDisplay.py?confId=2687

 

Repository updates

 

·       Pending pull request from Carlos Pere: new TPC clustering https://github.com/sPHENIX-Collaboration/coresoftware/pull/263

o   TODO: rename digitizer class to PHG4TPCDigitizer

o   Request check and append cluster pull distribution ((reco - truth)/estimated_uncertainty) to the pull requst

o   Request check tracking efficiency VS before the change for the cylindrical tracker macro: G4_Svtx_maps+IT+tpc.C, i.e. not breaking on-going simulation studies with cylindrical models

o   Is macro need to be changed?

§  Constructing new macros for tracking system (next bullet)

§  Current setting tested with cylindrical-simplified tracker macros

·       Coming: Tony to add new tracking macro summarize recent developments in laddered silicon tracker, TPC readout plane and GenFit2 kalman filter refit.

·       Online software repository: online_distribution repository (https://github.com/sPHENIX-Collaboration/online_distribution ) has been successfully separated from the offline coresoftware repository. Has been tested for a while. Martin and Chris will remove its duplication in coresoftware soon.

·       Coding style: Carlos and Tom brought up very  good point on unifying coding style. We should determine coding style guideline and associated code style checker tools.

o   Previous considerations including adopting Google C++ Style Guide or ROOT C++ Coding Conventions.

 

 

Purity estimation for di-b-jets - Haiwang Yu

 

Summary: run a new batch of p+p simulation to extend the Geant4-based tagging purity-efficiency study from single b-jet tagging to di-b-jets. Need to double check many details.

 

Slide 2: cuts summary

 

Slide 3: significance of the largest displaced track in each jet of di-jets

Suggestion to double check performance VS previous single b-jet simulation

 

Slide 4:

Haiwang: statistics is low

Jin: suspicious high purity for single track and lower efficiency for two- and three-track cuts

Jin: suggest double check single track tagging eff.

 

Slide 5:

Haiwang found truth tagging yields large fraction of b-jet light-jet pairs. Jin and Haiwang plan to work on double checking the setup and result.

 

 

 

 

 

______________________________

 

Jin HUANG

 

Associate Physicist

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________

 

From: Huang, Jin
Sent: Monday, April 3, 2017 10:36 AM
To: 'sphenix-software-l AT lists.bnl.gov' <sphenix-software-l AT lists.bnl.gov>
Cc: 'sphenix-l AT lists.bnl.gov' <sphenix-l AT lists.bnl.gov>
Subject: [reminder] sPHENIX simulation and software meeting, Tue Apr 4th, 1PM EST @ 2-219.

 

Hello everyone,

 

We will have a regular sPHENIX simulation and software meeting, Tue Apr 4th, 1PM EST @ 2-219.

 

Currently on agenda is:

•         Purity for di-b-jet correlation measurements  - Haiwang

Further topics will be welcomed too  

 

The agenda page is at https://indico.bnl.gov/conferenceDisplay.py?confId=2687  , for which the common modification password is "1008"

•         For residents at BNL, we will meet at the 2-219 conference room if not closed for snow

•         To join the Meeting via phone bridge:  https://bluejeans.com/619960505 

•         To join via Phone:

1) Dial:

        +1.408.740.7256

        +1.888.240.2560(US Toll Free)

        +1.408.317.9253(Alternate number)

        (see all numbers - http://bluejeans.com/numbers)

2) Enter Conference ID: 619960505

 

Cheers,

 

Jin

 

 

______________________________

 

Jin HUANG

 

Associate Physicist

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________