1 / 12

Some Plots from Mu2eG4

Some Plots from Mu2eG4 . Goals - To get a feel for the T-tracker acceptance - I will just show plots that struck me as being important for pattern recognition - Will be much more quantitative in the very near future. Caveats - The C++, Root learning curve was steep, so I didn’t get

landon
Download Presentation

Some Plots from Mu2eG4

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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Some Plots from Mu2eG4 Goals - To get a feel for the T-tracker acceptance - I will just show plots that struck me as being important for pattern recognition - Will be much more quantitative in the very near future. Caveats - The C++, Root learning curve was steep, so I didn’t get as much done as I’d like. Thanks to Rob for helping out !!! Hogan Nguyen Jan 5th 2010

  2. From Rob’s Cornell Seminar December 19th 2010

  3. X-Y Straw Hit Location for Signal Electrons from ntuple in Readback.cc DS Field Strength = -0.5 T 2 1 0 3 4 5 Even Planes Even Sectors Even Planes Odd Sectors

  4. X-Y Straw Hit Location for Signal Electrons from ntuple in Readback.cc DS Field Strength = -0.5 T 1 2 0 3 5 4 Odd Planes Even Sectors Odd Planes Odd Sectors

  5. Conversion Electrons Generated with Cos(Polar) = 0.7 ~ 1.8 orbit cycles PT(Plane=0) = 75 MeV Radius(Plane=0) = 25 cm Radius(Plane=35) = 24.95 cm Orbit radius shrinks by 500 microns, or 5x the hit resolution ! energy loss in target ?

  6. Conversion Electrons Generated with Cos(Polar) = 0.5 ~ 2.5 orbit cycles PT(Plane=0) = 90.9 MeV Radius(Plane=0) = 30.31 cm Radius(Plane=35) = 30.19 cm Orbit radius shrinks by 1.2 mm, or 12x the hit resolution !

  7. Conversion Electrons Generated with Cos(Polar) = 0.3 Radius(Plane=0) = 33.39 cm Radius(Plane=35) = 33.13 cm Orbit radius shrinks by 2.6 mm, or 1 straw radius !

  8. Other Configurations MC doesn’t support transporting backwards conversion electrons ie. generating cos(polar) = -0.7 doesn’t work

  9. At least two panels are required to reconstruct x AND y. Track intercepts exactly 1 panel 2 panels 3 panels 4 panels Asset’s T-tracker Memo V4

  10. To do Pattern Recognition, Need to start with regions where track goes through 2 panels. 2 panels are needed to make “seed” hits. Radius 0 panels 1 panels 2 panels > 2 panels 0-38 cm 100% 0 0 0 38-43 cm 0% 50% 50% 0 if track enters a station, 95% chance for entering regions with at least 2 panels cos(polar) = 0.3

  11. cos(polar) = 0.7 cos(polar) = 0.5 if track hits a station, 83.5% chance of entering region with at least 2 panels if track hits a station, 93.6% chance of entering region with at least 2 panels

  12. A Conversion Electron Event Station 12 All stations 1 mm bins Station 10 2 mm bins For patter recognition, will need to understand the typical scatter in these points within each station 1 mm bins

More Related