Design and testing of a 48 channel waveform digitizer card for the ALERT TOF detector

The ALERT-TOF detector (AtoF), to be installed in CLAS12 at Jefferson Lab, aims at detecting low momentum recoiling ions through scintillator coupled SiPM-generated pulses with excellent time resolution. The experimental capability and systematics can be greatly enhanced by the availability of waveform data from the scintillation process, especially during the high luminosity experimental configuration. For this reason, we developed a novel readout board using Nalu Scientific custom digitizing asics (ASoCs) that is capable of acquiring waveform data at ~2.2Gsps or more from 48 independent channels. The board is currently under testing and it is expected to be incorporated in the experiment in the near future.