PCSa: A tool for photoneutron cross section measurement data analysis at SLEGS

In photoneutron cross section measurements, extracting neutron counts (N_n) 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 $\sim$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 N_n 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 ${}^{197}\text{Au}$, ${}^{159}\text{Tb}$, ${}^{63}\text{Cu}$, ${}^{27}\text{Al}$, and ${}^{59}\text{Co}$ (detailed in the Summary section). It establishes a critical foundation for high-efficiency photonuclear data analysis at SLEGS.