Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9845397 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 18 Pages |
Abstract
This paper presents experimental results on the timing resolution achieved with a 5Â mm thick HgI2 detector. The timing information was derived based on the cathode pre-amplifier pulse waveform, measured using a digital oscilloscope. The times of interaction were estimated by fitting the measured pulse waveforms to pre-defined waveform models. With this approach, problems related to the conventional leading edge or constant fraction triggering, such as slow charge carrier mobility, pulse shape variation and depth-dependent detector response can be greatly reduced. As a result, we showed a 13Â ns timing resolution measured using the 5Â mm thick HgI2 detector and a BaF2 coincidence detector with 511Â keV full energy events. In this paper, we discuss several waveform models and the results achieved using these models.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
L.J. Meng, Z. He,