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

Flöthner KJ, Garcia F, Oberhauser B, Brunbauer F, Heiss MW, Janssens D, Ketzer B, Lisowska M, Meurer M, Muller H, Oliveri E, Orlandini G, Pfeiffer D, Ropelewski L, Samarati J, Sauli F, Scharenberg L, van Stenis M, Utrobicic A, Veenhof R (2025)

Publication Type: Journal article

Publication year: 2025

Journal

Journal of Instrumentation Institute of Physics: Hybrid Open Access

Book Volume: 20

Article Number: C07050

Journal Issue: 7

DOI: 10.1088/1748-0221/20/07/C07050

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 is used as a trigger-less readout for the TWIN GEM-TPC (Gas Electron Multiplier-Time Projection Chamber) to prove the operation without external t0 of such a TPC configuration. First results of position reconstruction with the TWIN GEM-TPC are presented, with a spatial resolution around 220 µm in X, and 330 µm in Y. Y is reconstructed from the time information, and X from the 1D strip readout. Operating the setup as an ultra-low material budget tracking telescope, an angular distribution can be extracted in the horizontal and vertical planes. Giving distributions with σ h = 0.15° in the horizontal plane and in the vertical plane σ v between 0.3° and 0.9°, depending on the reconstruction method.

Involved external institutions

Europäische Organisation für Kernforschung (CERN)

Switzerland (CH) Helsinki Institute of Physics

Finland (FI) Paul Scherrer Institute (PSI)

Switzerland (CH) Rheinische Friedrich-Wilhelms-Universität Bonn

Germany (DE)

How to cite

APA:

Flöthner, K.J., Garcia, F., Oberhauser, B., Brunbauer, F., Heiss, M.W., Janssens, D.,... Veenhof, R. (2025). Application of the VMM3a/SRS: a t0-less TWIN GEM-based TPC. Journal of Instrumentation, 20(7). https://doi.org/10.1088/1748-0221/20/07/C07050

MLA:

Flöthner, K. J., et al. "Application of the VMM3a/SRS: a t0-less TWIN GEM-based TPC." Journal of Instrumentation 20.7 (2025).

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