Fig. 7

Computed COG of a detector block consisting of a \(4\times 4\) Broadcom NUV-MT SiPM array one-to-one coupled to a \(4\times 4\) LYSO:Ce,Ca crystal matrix at a bias voltage of 41.5 V (overvoltage 9 V) and a discriminator threshold of \(\mathsf {vth\_t1}\)=50. The COG was computed only considering the neighboring channels of the hottest pixel. Gaps in horizontal orientation correspond to the trenches for the bond wires of the NUV-MT SiPM array [44], opposed to an exactly symmetric 4\(\times\)4 crystal matrix