Microchannel plate cross-strip detectors with high spatial and temporal resolution.
نویسندگان
چکیده
The cross-strip imaging readout employs charge division, and centroiding, of microchannel plate charge signals detected on two orthogonal layers of sense strips to encode event X-Y positions and times. We have developed cross-strip detectors and fully parallel channel position encoding electronics. The front-end amplifiers utilize two 32-channel pre-amplifier ASICs that send signals to a full 64-channel 60 MHz ADC circuit followed by a FPGA event-processing board. Tests with a software Finite Impulse Response filter and centroiding algorithm demonstrate <10mm resolution with a 32mm cross-strip anode detector using low microchannel plate gain (∼10(6)). The self-triggered event timing accuracy is 750 ps, and the system is capable of encoding photons at >1 MHz in combination with firmware-based FPGA centroiding algorithms.
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ورودعنوان ژورنال:
- Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
دوره 610 1 شماره
صفحات -
تاریخ انتشار 2009