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Microfluidic Platform with Multiplexed Electronic Detection for Spatial Tracking of Particles

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Microchannel plate cross-strip detectors with high spatial and temporal resolution.

O Siegmund¹, A Tremsin, J Vallerga

¹Experimental Astrophysics Group, Space Sciences Laboratory, 7 Gauss Way, University of California, Berkeley, CA 94720, USA.

Nuclear Instruments & Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

|May 17, 2011

Summary

This study presents a new cross-strip imaging readout system for precise event position and timing detection. The developed system achieves sub-10mm resolution and high-speed photon encoding for advanced scientific applications.

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$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

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Published on: December 8, 2016

Area of Science:

Physics
Instrumentation
Signal Processing

Background:

Microchannel plate (MCP) detectors are crucial for sensitive particle and photon detection.
Accurate event localization and timing are essential for many scientific experiments.
Existing readout electronics can be a bottleneck for high-rate data acquisition.

Purpose of the Study:

To develop and test a novel cross-strip imaging readout system for MCP detectors.
To achieve high spatial resolution and precise timing for detected events.
To enable high-count-rate data acquisition with parallel processing.

Main Methods:

Utilized a cross-strip anode design with charge division and centroiding for X-Y position encoding.
Developed fully parallel channel position encoding electronics, including pre-amplifier ASICs, a 64-channel ADC, and an FPGA processing board.
Implemented a software Finite Impulse Response (FIR) filter and centroiding algorithm for data analysis.

Main Results:

Achieved spatial resolution better than 10mm with a 32mm cross-strip anode detector at low MCP gain (∼10^6).
Demonstrated self-triggered event timing accuracy of 750 ps.
Showcased system capability for encoding photons at rates exceeding 1 MHz using FPGA-based centroiding.

Conclusions:

The developed cross-strip imaging readout system offers a promising solution for high-resolution, high-speed event detection.
The system's performance metrics (spatial resolution, timing accuracy, and count rate) are suitable for demanding scientific applications.
Integration of ASICs, ADCs, and FPGAs enables efficient and parallelized event processing.