Development of high-resolution time pick-off detector based on Micro-Channel Plate
As the Energy-velocity (E-(v) mass spectrometer garners increasing attention, researchers have observed that the temporal resolution of time-of-flight detectors has become a limiting factor in enhancing the detection efficiency of E-v devices. Consequently, this necessitating higher time-resolution...
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Veröffentlicht in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2023-10, Vol.1055, p.168485, Article 168485 |
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Sprache: | eng |
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Zusammenfassung: | As the Energy-velocity (E-(v) mass spectrometer garners increasing attention, researchers have observed that the temporal resolution of time-of-flight detectors has become a limiting factor in enhancing the detection efficiency of E-v devices. Consequently, this necessitating higher time-resolution requirements for these detectors. SED-MCP, or Secondary Electron Time Detector based on Micro-Channel Plate, is a type of detector capable of accurately measuring the flight time of particles without significantly interfering with their motion. In this study, we optimized the design parameters of SED-MCP through electron optical simulation and achieved a secondary electron flight time spread of less than 20 ps. Furthermore, we established a digital electronic system and a scaling-free digital timing method to minimize timing uncertainties and improve detection efficiency. As a result of these efforts, a SED-MCP with an intrinsic time resolution of 57 ± 5 ps was developed. This resolution surpasses those of similar detectors used in E-v mass spectrometers and holds substantial significance for improving the mass resolution and detection efficiency of the E-v mass spectrometer. |
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ISSN: | 0168-9002 1872-9576 |
DOI: | 10.1016/j.nima.2023.168485 |