Quad-module characterization with the MALTA monolithic pixel chip.

The MALTA silicon pixel detector combines a depleted monolithic active pixel sensor (DMAPS) with a fully asynchronous front-end and readout. It features a high granularity pixel matrix with a 36.4 μ m symmetric pixel pitch, low power consumption of < 1 μ W/pixel and low material budget with detector thicknesses as little as 50 μ m. It achieves a radiation hardness to 100MRad TID and more than 1 × 10E15 1 MeV n eq/cm 2 with a time resolution of < 2 ns (Pernegger et al., 2023). In order to cover large sensitive areas efficiently with a minimum of power and data connections the development of modules, comprising of up to 4 MALTA detectors, is studied. This contribution presents the beam test performance of parallel and serial powered MALTA 4-chip modules in an effort to characterize the sensor's chip-to-chip data and power transmission and prepare the production of a first prototype of an ultra-light weight 4-chip module on a flexible circuit with next generation MALTA2 sensors. [ABSTRACT FROM AUTHOR]