Lucrecia is the TAS at this station. It is made of one piece of NaI(Tl) material cylindrically shaped with φ = h = 38 cm (the largest ever built to our knowledge). It has a cylindrical cavity of 7.5 cm diameter that goes through perpendicularly to its symmetry axis. The purpose of this hole is to allow the beam pipe to reach the measurement position so that the tape can be positioned in the center of the detector. It also allows the placement of ancillary detectors in the opposite side to measure other types of radiation emitted by the activity implanted in the tape (x rays, e−/e+, etc.). However, the presence of this hole makes this detector less efficient as compared to the GSI TAS (Lucrecia’s total efficiency is around 90% from 300 to 3000 keV). Lucrecia’s light is collected by 8 photomultipliers. During the measurements Lucrecia is kept measuring at a total counting rate not larger than 10 kHz to avoid second and higher order pileup contributions.