Quad-module characterization with the MALTA monolithic pixel chip

Journal article

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 μm symmetric pixel pitch, low power consumption of <1 μW∕pixel and low material budget with detector thicknesses as little as 50 μm. It achieves a radiation hardness to 100MRad TID and more than 1 × 10E15 1 MeV 𝑛eq∕cm2 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.

Authors: Dachs, F; Zoubir, AM; Sharma, A; Bortoletto, D

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Elsevier
• Journal: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• Volume: 1064
• Article number: 169306
• Publication date: 2024-05-01
• Acceptance date: 2024-03-31
• DOI: 10.1016/j.nima.2024.169306
• EISSN: 1872-9576
• ISSN: 0168-9002
• Language: English
• Keywords: large-area; module; monolithic; radiation hard; MALTA; silicon pixel detector; FFR