Speakers
Description
The Large Enriched Germanium Experiment for Neutrinoless ββ Decay (LEGEND) experimental program is dedicated to the search for the neutrinoless double-beta (0νββ) decay of $^{76}Ge$ with isotopically enriched high-purity germanium (HPGe) detectors and a discovery sensitivity beyond a half-life of $10^{28}$ years. The project's first phase, LEGEND-200, has stably accumulated physics data at the Laboratori Nazionali del Gran Sasso (LNGS). The first unblinding revealed a new best global limit of $T^{1/2}_{0\nu} > 1.9\cdot 10^{26}$ yr (90% confidence level). We present an update on our ongoing experiment, which features two distinct software stacks and independent analysis teams. This session will focus on the advancements of the JuLeAna ($\bf{Ju}$lia $\bf{LE}$GEND $\bf{Ana}$lysis) software stack and its application to the current LEGEND data. Key subjects will include performance evaluation, data management, the GPU-accelerated Digital Signal Processing (DSP) framework, calibration and fitting routines, event reconstruction, as well as IO performance. Additionally, we will provide a brief demonstration highlighting the enhancements made to the data flow within our customized SLURM-based parallel processing environment.
This work is supported by the U.S. DOE, and the NSF, the LANL, ORNL and LBNL LDRD programs; the European ERC and Horizon programs; the German DFG, BMBF, and MPG; the Italian INFN; the Polish NCN and MNiSW; the Czech MEYS; the Slovak RDA; the Swiss SNF; the UK STFC; the Canadian NSERC and CFI; the LNGS and SURF facilities.