2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/81361The HADES first level trigger is studied for the system p+Ni at a beam energy of 2 AGeV. The timing properties of the trigger signal are reported. The efficiency loss due to deadtime is specified. A trigger requirement of a time overlap window with the start detector is described. The trigger rates for different overlap windows are given.10 pages, documentstyle[epsfig]{elsart}, 2 postscript figures included; Submitted to Nucl. Instr. and Meth. ANuclear Experimenttext