Hao, Z. R.; Liua, L. X.; Wang, H. W.; Fan, G. T.; Xu, H. H.; Zhang, Y.; Yang, Y. X.; Chen, K. J.; Sun, Q. K.; Zhou, M. D.; Wang, Z. W.; Xu, M. K.; Wang, X. F.; Shena, Y. L.; Yang, C.

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT

2025, ,

Hao, Z. R.; Liua, L. X.; Wang, H. W.; Fan, G. T.; Xu, H. H.; Zhang, Y.; Yang, Y. X.; Chen, K. J.; Sun, Q. K.; Zhou, M. D.; Wang, Z. W.; Xu, M. K.; Wang, X. F.; Shena, Y. L.; Yang, C.

In photoneutron cross section measurements, extracting neutron counts (Nn) and gamma flux (N gamma) from experimental data is a fundamental step during data analysis. By leveraging the high-flux gamma beams of Shanghai Laser Electron Gamma Source (SLEGS), its unique slant-scattering energy-tuning capability, and the Flat-Efficiency Detector (FED) with an exceptional efficiency of similar to 40%, we can perform high-throughput measurements of photoneutron cross sections. The massive data yield necessitates rapid analysis for real-time beam optimization. To address this, the Photoneutron Cross section analysis (PCSa) tool has been developed, which provides experimentalists with an efficient, user-friendly toolkit integrating: (1) Advanced algorithms for Nn and N gamma extraction via pulse-height spectra analysis and time-distribution optimization. (2) Automated workflows for MVME data conversion with ROOT integration. (3) The robust direct unfolding method. (4) An intuitive, user-friendly graphical interface that streamlines operation. PCSa has become the standardized processing pipeline for SLEGS photoneutron studies, having successfully analyzed data for 197Au, 159Tb, 63Cu, 27Al, and 59Co (detailed in the Summary section). It establishes a critical foundation for high-efficiency photonuclear data analysis at SLEGS.