Towards MPGDs with embedded pixel ASICs

TL;DR

This paper explores embedding a high-granularity pixel ASIC, Timepix4, into gaseous detectors for enhanced experimental capabilities, presenting initial results and a new readout concept for broader high-energy physics applications.

Contribution

It introduces the integration of Timepix4 ASIC into micro-pattern gaseous detectors and proposes a novel Silicon Readout Board for wider application.

Findings

First X-ray images with Timepix4 using TSVs.

Successful readout of a triple-GEM detector with Timepix4.

Introduction of the Silicon Readout Board concept.

Abstract

Combining gaseous detectors with a high-granularity pixelated charge readout enables experimental applications which otherwise could not be achieved. This includes high-resolution tracking of low-energetic particles, requiring ultra-low material budget, X-ray polarimetry at low energies ($\lessapprox$ 2 keV) or rare-event searches which profit from event selection based on geometrical parameters. In this article, the idea of embedding a pixel ASIC - specifically the Timepix4 - into a micro-pattern gaseous amplification stage is illustrated. Furthermore, the first results of reading out a triple-GEM detector with the Timepix4 (GEMPix4) are shown, including the first X-ray images taken with a Timepix4 utilising Through Silicon Vias (TSVs). Lastly, a new readout concept is presented, called the 'Silicon Readout Board', extending the use of pixel ASICs to read out gaseous detectors to a wider range of HEP applications.