ASIC-based techniques for high-density channel $\gamma$ spectroscopy.

The rise of Application Specific Integrated Circuits (ASIC) technology allowed the realization of compact low-power-consumption devices, with a large number of acquisition channels for nuclear physics experimental setups. The CAEN 5202 FERS-5200 board is an all-in-one front end optimized to work with signals coming from SiPMs. The acquisition lines are 64 in total and are provided by two 32 channels Citiroc-1A chips. This kind of chip generally is not used for spectroscopy measurement since it has small peaking time. Through this contribution, we demonstrate that according to the SiPM dimension, it is still possible to acquire gamma spectra from crystals like cerium-doped lutetium yttrium orthosilicate (LYSO(Ce)), caesium iodine (CsI), and bismuth germanate (BGO), obtaining energy resolutions comparable with literature and with an alternative system. Measurements with other radioactive sources are in progress to test the A5202 capabilities to work with faster scintillators like lanthanum bromide ($LaBr_3$) and cerium bromide ($CeBr_3$). This system could be suitable for experiments requiring many acquisition channels with SiPM and scintillation detectors.