Count-Rate Modeling and Compensation for Photomultiplier Tubes Under High-Voltage Ripple Disturbances
Year: 2026
Type: conference-paper
Abstract: To address the susceptibility of photomultiplier tube output count rates to high-voltage ripple disturbances in industrial radioactive-source-based density measurement, this study classifies the dominant high-voltage perturbations according to the output characteristics of switching high-voltage modules. The disturbances are represented by two principal components: periodic switching ripple and transient spikes. A nonlinear mapping model between high-voltage perturbations and count-rate fluctuations is then established. On this basis, an online count-rate compensation method based on the third-degree Cubature Kalman Filter is developed. Experimental results demonstrate that the proposed method effectively suppresses fluctuations in the disturbed CPS, enabling the compensated count rate to approach its ideal state more closely and improving the density inversion results. This provides a reliable data foundation for industrial density measurement applications.
Authors: Wanqing Zhao, Xiaopeng Wang
Institution: Lanzhou Jiaotong University
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7204228818