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Photoelectron Pulse Counting System for Ultraviolet Photoelectron Spectroscopy Instrument
编号：41 访问权限：仅限参会人 更新：2025-11-10 11:16:33 浏览：14次 口头报告

报告开始：暂无开始时间（Asia/Shanghai）

报告时间：暂无持续时间

所在会场：[暂无会议] [暂无会议段]

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摘要
Ultraviolet photoelectron spectroscopy analyzers are used to analyze the binding energy of valence electrons on material surfaces, thereby investigating their electronic structures. To meet the demand for high-precision detection of photoelectron signals on material surfaces, this study independently designed a high-performance pulsed counting electronics system. The system adopts a channel electron multiplier as the core detector, constructs a counting module with FPGA as the core, achieves a high-speed processing capability of 200 MHz through phase-locked loop frequency multiplication, and realizes accurate measurement with a dynamic range of 8 orders of magnitude by means of gating timing and dual-channel differential counting. An FPGA control program based on Verilog HDL was developed, covering pulse counting, UART communication, and I²C threshold adjustment functions, and upper computer software was designed based on the .NET framework. Experimental verification shows that the system counting error is less than 0.0006%, providing key technical support for the study of electronic states on material surfaces.
 
关键词
Ultraviolet Photoelectron Detector; Single-Photon Counting; FPGA; Dual-Threshold Discrimination
报告人
Yining Wang
student Xi'an Jiaotong University

稿件作者
Yining Wang Xi'an Jiaotong University
Yu Chen Xi'an Jiaotong University
Linhuan Wei Xi'an Jiaotong University
Long Chen Xi'an Jiao Tong University
双 王 西安交通大学
Xin Liu Xi’an Jiaotong University
Jie Bai Xi'an Jiaotong University
Ishii Hisao Chiba University
Min Zhang Northwest University； China
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重要日期

  • 会议日期

    11月21日

    2025

    至

    11月23日

    2025

  • 10月20日 2025

    初稿截稿日期

  • 11月23日 2025

    注册截止日期

主办单位
IEEE Instrumentation and Measurement Society
South China University of Technology
承办单位
South China University of Technology
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