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Forward Tracking issues

Forward Tracking issues. Digitization. Work is ongoing to implement the conversion of SimTrackerHits to silicon microstrips with good approximation of charge sharing (UCSC). Working on code to handle various combinations of tilings in the forward disks.

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Forward Tracking issues

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  1. Forward Tracking issues

  2. Digitization • Work is ongoing to implement the conversion of SimTrackerHits to silicon microstrips with good approximation of charge sharing (UCSC). • Working on code to handle various combinations of tilings in the forward disks. • Will want to be able to study various combinations of pixel and microstrip tilings.

  3. WedgeZPlane • Allows one to construct a tiling of a disk with just a few input parameters: • number of annuli • number of wedges per annulus • inner radii of annuli • outer radii of annuli • phi offset of wedges in annulus • strip pitch • orientation of strips

  4. Example Disk Tiling

  5. Tracking strategies • Current disks envision either double-sided or back-to-back silicon wafers, with offset pitch. • Can form 3D spacepoints from intersections of strips, and use these in pattern recognition. • Could also find tracks in VXD and project forwards, picking up single strips.

  6. To do • Digitize hits into readout strips, cluster strips and create strip hit positions and uncertainties. • Study occupancies as a function of various disk-tiling geometries. • can introduce pixels into innermost rings if needed. • Quantify number of ghost hits for various geometries. • Can we do standalone tracking in disks? • Conduct studies with full backgrounds.

  7. To do • Investigate timing issues by time-stamping strips. • How often does a signal hit get spoiled by an earlier background hit? (loss) • How often does a signal strip (or its neighbors) get hit at a later time? (position error, pattern recognition failure) • Had hoped to have some plots by this meeting…

  8. Wired Event Display • Can now display the strip hits in the Wired event display! • single muon track in forward disks. • Green is MC track, Red are strips. will add wedge outlines soon.

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