Generic Microstrip R&D Topics at SCIPP: Longitudinal Charge Division and Length Limitations for Long Strips

TL;DR

This paper explores charge division for position estimation and noise limitations in long silicon microstrip sensors, revealing a 6% resolution and the impact of network effects on noise reduction.

Contribution

It presents new findings on charge division accuracy and noise behavior in long microstrip sensors, highlighting the importance of network effects.

Findings

Achieved ±6% position resolution on 10cm sensors

Network effects significantly reduce readout noise

Long, narrow strips have intrinsic noise limitations

Abstract

We discuss results on the use of charge division to estimate the longitudinal position of charge deposition in silicon microstrip sensors, and on the intrinsic noise limitation of microstrip sensors in the limit of long, narrow strips. We find a resolution of \pm6% of the length of the sensor for a 10cm-long sensor. We also find that network effects significantly reduce sensor readout noise relative to naive expectations that arise from treating the detector resistance and capacitance as single discrete electronic components.