Development of SOI pixel detector in Cracow

TL;DR

This paper introduces a novel monolithic SOI pixel sensor in 200nm CMOS technology designed for spectroscopy and particle tracking, featuring multiple pixel types and integrated SAR ADCs for enhanced performance.

Contribution

It presents the design of a versatile SOI pixel detector with integrated ADCs, tailored for both spectroscopic and particle tracking applications, which is a new approach in this technology.

Findings

Multiple pixel cell designs for different applications

Integration of 10-bit and 6-bit SAR ADCs within the sensor

Potential for improved spectroscopy and particle tracking performance

Abstract

This paper presents the design of a new monolithic Silicon-On-Insulator pixel sensor in $200~nm$ SOI CMOS technology. The main application of the proposed pixel detector is the spectroscopy, but it can also be used for the minimum ionizing particle (MIP) tracking in particle physics experiments. For this reason few different versions of pixel cells are developed: a source-follower based pixel for tracking, a low noise pixel with preamplifier for spectroscopy, and a self-triggering pixel for time and amplitude measurements. In addition the design of a Successive Approximation Register Analog-to-Digital Converter (SAR ADC) is also presented. A 10-bit SAR ADC is developed for spectroscopic measurements and a lower resolution 6-bit SAR ADC is integrated in the pixel matrix as a column ADC, for tracking applications.