Development of a modular test system for the silicon sensor R&D of the ATLAS Upgrade

TL;DR

This paper presents a modular test system, CaRIBOu, designed for testing HV-CMOS silicon sensors for the ATLAS detector upgrade, demonstrating versatility and ongoing development for broader application.

Contribution

Introduction of CaRIBOu, a flexible, modular test system for silicon sensors, tailored for R&D in collider detector upgrades.

Findings

CaRIBOu successfully tested HV-CMOS sensors at CERN.

The system is adaptable to different sensors and lab setups.

Preliminary results confirm its versatility and effectiveness.

Abstract

High Voltage CMOS sensors are a promising technology for tracking detectors in collider experiments. Extensive R&D studies are being carried out by the ATLAS Collaboration for a possible use of HV-CMOS in the High Luminosity LHC upgrade of the Inner Tracker detector. CaRIBOu (Control and Readout Itk BOard) is a modular test system developed to test Silicon based detectors. It currently includes five custom designed boards, a Xilinx ZC706 development board, FELIX (Front-End LInk eXchange) PCIe card and a host computer. A software program has been developed in Python to control the CaRIBOu hardware. CaRIBOu has been used in the testbeam of the HV-CMOS sensor CCPDv4 at CERN. Preliminary results have shown that the test system is very versatile. Further development is ongoing to adapt to different sensors, and to make it available to various lab test stands.