Bonn 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Bonn musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 64: Gaseous detectors I
T 64.5: Vortrag
Mittwoch, 1. April 2020, 17:30–17:45, L-3.016
Gaseous Detector Studies with the VMM3a ASIC — •Lucian Scharenberg1,2, Klaus Desch2, Hans Muller1, Eraldo Oliveri1, Dorothea Pfeiffer3,1, and Leszek Ropelewski1 — 1CERN, Geneva, Switzerland — 2Physikalisches Institut, University of Bonn, Germany — 3ESS, Lund, Sweden
The VMM3a is a 64-channel Application-Specific Integrated Circuit (ASIC), which was specifically developed for the electronic read-out of Micro-Pattern Gaseous Detectors (MPGDs). It offers various features, like for example a high-rate (up to 4 MHz per channel) continuous read-out, a nanosecond time resolution, a 10-bit Analogue-to-Digital-Converter (ADC) for the charge signals, an integrated zero-suppression or a neighbouring-logic.
Recently this ASIC has been implemented into RD51’s Scalable Readout System (SRS), enabling the usage of the VMM3a for small R&D laboratory set-ups to mid-scale experiments. In order to demonstrate the capabilities of this system for future applications, characterisation and test measurements are conducted, using a 10×10 cm2 active area triple-GEM detector.
In this talk a short overview of the experimental set-up and the VMM3a/SRS structure is given, followed by the presentation of one example of the test measurements, exploiting several of the available features. It is shown that the rare case of fluorescence X-rays, also known as ‘escape photons’, interacting in the gas volume can be resolved. Furthermore these resolved X-rays are used to introduce a new method to determine the drift velocity in a gaseous detector.