Application of the VMM3a/SRS: A t0-less TWIN GEM-based TPC

TL;DR

This paper presents a self-triggered, continuous readout system based on VMM3a/SRS integrated with a Twin GEM TPC, enabling high-rate particle detection with flexible configuration and low material budget for diverse detector applications.

Contribution

It introduces a novel t0-less, trigger-less TPC system using VMM3a/SRS with adaptable parameters and demonstrates its effectiveness in high-rate particle tracking and low-material-budget applications.

Findings

Achieved MHz interaction rate particle recording.

Demonstrated effective tracking performance.

Showed potential as a low-material-budget tracking telescope.

Abstract

Integrating the ATLAS/BNL VMM3a ASIC (Application Specific Integrated Circuit) into the RD51/SRS (Scalable Readout System) provides a self-triggered continuous readout system for various gaseous detectors. Since the system allows flexible parameters, such as switching the polarity, adjusting electronics gain or different peaking times, the settings can be adjusted for a wide range of detectors. The system allows particles to be recorded with a MHz interaction rate in energy, space, and time. The system will be introduced in the beginning, and short examples will be given for different applications. After, the Twin GEM TPC will be discussed in more detail to show the benefits of such a trigger-less system in combination with the Twin configuration. Last, a few results for the tracking performance and the possibility to operate as a tracking telescope will be shown. Thus, this presents the possibility of an extremely low material budget tracking system suitable for tracking from high to low-energy particle beams.