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Performance Analysis of Stripped LAT with Silicon Strip Detectors

This report discusses the performance of the Stripped LAT, which consists of 30 tungsten disks, each with a silicon strip detector. The detectors feature either 120 radial or 64 concentric strips, totaling 2960 read-out channels. We detail the reconstruction method that uses energy-weighted averages to find cascade positions and correct for systematic offsets. Results indicate that our simulation based on a 250GeV single-electron sample achieves an accuracy of 0.5x10^-4 radians for polar angle measurements and a 5GeV resolution for electron energy, demonstrating effective performance with relatively low strip segmentation.

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Performance Analysis of Stripped LAT with Silicon Strip Detectors

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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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