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Performance of Stripped LAT

Bogdan Pawlik INP Krakow Bogdan.Pawlik@ifj.edu.pl Cracow 10 October 2003. Performance of Stripped LAT. LAT description. LAT consists of 30 tungsten disks Each disk has silicon strip detector attached Every second detector has either 120 radial or 64 concentric strips

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Performance of Stripped LAT

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  1. BogdanPawlik INP Krakow Bogdan.Pawlik@ifj.edu.pl Cracow 10 October 2003 Performance of Stripped LAT

  2. LAT description • LAT consists of 30 tungsten disks • Each disk has silicon strip detector attached • Every second detector has either 120 radial or 64 concentric strips • In total there is 2960 read-out channels

  3. Reconstruction method • For each LAT disk position of the cascade is found as energy weighted average of fired strip positions • Final polar and azimuthal angles is average of values found for each disk • Final values are then corrected for systematic offset if any

  4. Reconstruction results (64ch)

  5. Reconstruction results (512ch)

  6. Summary • Simulation based on single electrons 250GeV sample indicates that for LAT design with silicon strip detectors accuracy of order 0.5x10-4 radian in measuring polar angle • Measurement of electron energy can be done with accuracy 5GeV (ΔE~0.31√E ) • Relatively low segmentation level (number of strips) seems to be sufficient (~3000 read-out chan.)

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