Z segmentation update improving reconstruction of non prompt tracks with the sid
Download
1 / 11

Z Segmentation Update (improving reconstruction of non-prompt tracks with the SiD) - PowerPoint PPT Presentation


  • 56 Views
  • Uploaded on

Z Segmentation Update (improving reconstruction of non-prompt tracks with the SiD). Lori Stevens (SLAC/UCSC) August 21, 2007 ILC Simulation Reconstruction Meeting. AxialBarrelTrackFinder1 Bug. Phi requirement: phi coordinate of all hits must be within π /2 of each other

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Z Segmentation Update (improving reconstruction of non-prompt tracks with the SiD)' - minor


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Z segmentation update improving reconstruction of non prompt tracks with the sid

Z Segmentation Update(improving reconstruction of non-prompt tracks with the SiD)

Lori Stevens (SLAC/UCSC)

August 21, 2007

ILC Simulation Reconstruction Meeting


Axialbarreltrackfinder1 bug
AxialBarrelTrackFinder1 Bug

  • Phi requirement: phi coordinate of all hits must be within π/2 of each other

  • Bug in my version of code caused phi requirement to be too restrictive

  • Fixed bug and found improvement in both efficiency and number of fake tracks when using z segmentation


Comparing Z Segmentation Before and After Fix Sample: pythiaZPolebbbar-0-1000_SLIC_v1r9p3_sidaug05.slcio


Some other studies collisions at 500gev
Some other studies (collisions at 500GeV)

  • panpyuds_nobeam_nobrem-1-500_SLIC_

    v2r0p6_sidaug05.slcio

  • panpyuds_nobeam_nobrem-3-500_SLIC_

    v2r0p6_sidaug05.slcio

  • panpyuds_nobeam_nobrem-7-500_SLIC_

    v2r0p6_sidaug05.slcio






Zpole vs 500gev collisions

1cm

5cm

10cm

30cm

1cm

5cm

10cm

30cm

ZPole vs. 500GeV collisions


Conclusion
Conclusion

  • The use 4 hit tracks may depend on the jet energy

  • Will 10cm segmentation make a difference?

  • Tyler Rice and Chris Meyer are doing a study using variable segmentation in Dima Onoprienko's Garfield Tracker…this may help find some answers


Helicaltrackfitter improvements
HelicalTrackFitter improvements

  • Does not currently fit hits in tracker barrel

  • Improving to fit hits in all regions

  • Will use various fitting methods such as circle fitting, line fitting, 2D hit consistency checks, and Rich Partridge’s z segmentation code

  • Presentation next Friday (8/31/07)


ad