FWD Software

[videbaek <videbaek AT bnl.gov>]

Hi

Let me take another look. I am fairly sure there is no overlap between 
the gas volume and the PCB volume in my file.. Nicole, did you /could 
you try to use Daniels stripped down version of the geometry?
I ahve not looked at your slides yet will do tomorrow, as I am in the 
sPHENIX PD-4 review today
(on committee).

Flemming


On 2022-11-18 10:46, Brandenburg, James wrote:
> Dear Nicole,
>
> Thank you for this study. I agree with  you that it indicates some
> issue with potential overlap between PCB and GAS. I will look into
> this as I continue with my study of the hits in simulation.
>
> Best,
> Daniel
>
> > On Nov 18, 2022, at 8:19 AM, Lewis, Nicole <nlewis AT bnl.gov> wrote:
> >
> > Hi Everyone,
> >
> > Here are some slides of the material budget of the sTGC gas:
> https://drupal.star.bnl.gov/STAR/system/files/sTGC_Gas_Material_Budget.pdf.
> > After I implemented Flemming's comments (slides 2 and 3), there
> > were no changes to the gas's material budget.
> >
> > I spent some time this yesterday playing around with eliminating
> > different detector components from the geometry and seeing how that
> > affected the gas's material budget.  When the gas is the only
> > component of the geometry, its material budget drops by over an
> > order of magnitude (slides 4 and 5).  And when I add back only the
> > PCB (the only component that is actually touching the gas), the
> > gas's material budget is exactly the same as when all other
> > components are included.  To me this implies that there is some
> > overlap between the gas and the PCB, but that does not make sense
> > given how everything is placed in the geometry file.
> >
> > Thanks,
> > Nicole
> >
> > [1]
> >
> > -------------------------
> >
> > From: Star-fwd-software-l
> > <star-fwd-software-l-bounces AT lists.bnl.gov> on behalf of
> > Brandenburg, James <jbrandenburg AT bnl.gov>
> > Sent: Thursday, November 17, 2022 12:28 PM
> > To: star-fwd-software-l AT lists.bnl.gov
> > <star-fwd-software-l AT lists.bnl.gov>
> > Subject: [Star-fwd-software-l] Fwd Software Meeting minutes
> > Thursday, November 17, 2022
> >
> > Dear All,
> >
> > Thank you for joining this morning. Below are the minutes for the
> > meeting this morning.
> >
> > Best,
> > Daniel
> >
> > Daniel: Updates
> > - PR adding FST data to StEvent and StMuDst accepted and merged into
> > DEV
> > - PR adding FCS WFF updates accepted and merged into DEV
> > - Working on  StFwdTrack Updates and ROOT geom from Jason's
> > directions (for tracking in BFC)
> >
> > Gavin: Tracking Alignment
> > - Previous result showing consistency between full & MC tracking was
> > a book-keeping mismatch. Full Tracking DOES show difference compared
> > to MC Tracking. MC Tracking recovers correct parameters
> > - Daniel and Gavin will look into possible reason that Full tracking
> > leads to a bias
> > - Gavin will investigate the actual performance (pT res and charge
> > ID) for realistic alignment case
> >
> > Daniel & Flemming: sTGC Geometry
> > - Flemming found and fixed several remaining overlaps in sTGC
> > geometry
> > - Daniel, based on suggestion from Flemming, removed all
> > non-essential parts of geometry
> > - move ahead with sTGC simulation and add supporting structures back
> >
> > Nicole: sTGC Geometry
> > - Will make new material budget plots incorporating Flemmings
> > changes and send to list ASAP
> >
> > Discussion of EPD efficiency and tracking check
> > - Isaac will begin with this topic as a step towards full analysis
> > - The goal here is to check if the EPD efficiency is reasonable
> > based on past estimates
> > - Second is to check how often EPD sees activity that is not
> > reflected by FWD tracking - check of FWD tracking efficiency with
> > minimal projection extrapolation needed
> >
> > David: FCS WFF
> > - cross check of old vs. new algorithm
> > - Overall good agreement - need to check the reduced counts in pi0
> > peak
> > - Maybe due to cut of 1 GeV for clusters -> new algo may have
> > lower avg cluster energy
> > - Need to run an event-by-event comparison to understand why peak
> > is reduced while sidebands are not.
> >
> > FCS Calibration:
> > - Individual calibrations are progressing. Xilin or another will
> > summarize results after thanksgiving.
> >
> > Rough list of items for Dec 6th Meeting:
> >
> > - Gavin: Alignment
> > - Te-Chuan: FST QA progress
> > - Nicole: sTGC geometry updates
> > - David: FCS WFF cross checks
> > - Xilin or another: FCS Calibration update
> > - Isaac: Initial progress on analysis (EPD efficiency or J/Psi
> > analysis)
> > - Xiaofeng: sTGC Timing studies
> > - Daniel: Tracking & Geometry updates
> >
> > _______________________________________________
> > Star-fwd-software-l mailing list
> > Star-fwd-software-l AT lists.bnl.gov
> > https://lists.bnl.gov/mailman/listinfo/star-fwd-software-l
>
>
>
> Links:
> ------
> [1] 
> https://drupal.star.bnl.gov/STAR/system/files/sTGC_Gas_Material_Budget.pdf
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--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596