DEPFET active pixel detectors for a future linear $e^+e^-$ collider

TL;DR

This paper reviews the development of DEPFET active pixel detectors, highlighting their high signal-to-noise ratio, fast read-out capabilities, and suitability for vertex detection in future linear $e^+e^-$ collider experiments.

Contribution

It presents the latest advancements in DEPFET detector prototypes, ASIC design, and integrated detector concepts tailored for future collider vertex detectors.

Findings

Achieved signal-to-noise ratio over 40 with 50-75 μm sensors

Developed ASICs for high-speed read-out

Designed comprehensive detector support solutions

Abstract

The DEPFET collaboration develops highly granular, ultra-transparent active pixel detectors for high-performance vertex reconstruction at future collider experiments. The characterization of detector prototypes has proven that the key principle, the integration of a first amplification stage in a detector-grade sensor material, can provide a comfortable signal to noise ratio of over 40 for a sensor thickness of 50-75 $\mathrm{\mathbf{\mu m}}$. ASICs have been designed and produced to operate a DEPFET pixel detector with the required read-out speed. A complete detector concept is being developed, including solutions for mechanical support, cooling and services. In this paper the status of DEPFET R & D project is reviewed in the light of the requirements of the vertex detector at a future linear $\mathbf{e^+ e^-}$ collider.