Design of a Trigger Data Serializer ASIC for the Upgrade of the ATLAS Forward Muon Spectrometer
Jinhong Wang, Liang Guan, J. W. Chapman, Bing Zhou, and Junjie Zhu

TL;DR
This paper presents the design and testing of a Trigger Data Serializer ASIC for the ATLAS muon spectrometer upgrade, enabling fast, reliable data readout from sTGC detectors in high-energy physics experiments.
Contribution
It introduces a dual-mode ASIC for sTGC detectors, capable of high-speed data serialization for trigger and tracking in the ATLAS upgrade.
Findings
ASIC operates at 4.8 Gbps for both modes
Successfully tested with detector signals
Supports real-time trigger data processing
Abstract
The small-strip Thin Gap Chamber (sTGC) will be used for both triggering and precision tracking purposes in the upgrade of the ATLAS forward muon spectrometer. Both sTGC pad and strip detectors are readout by a Trigger Data Serializer (TDS) ASIC in the trigger path. This ASIC has two operation modes to prepare trigger data from pad and strip detectors respectively. The pad mode (pad-TDS) collects the firing status for up to 104 pads from one detector layer and transmits the data at 4.8 Gbps to the pad trigger extractor every 25 ns. The pad trigger extractor collects pad-TDS data from eight detector layers and defines a region of interest along the path of a muon candidate. In the strip mode (strip-TDS), the deposited charges from up to 128 strips are buffered, time-stamped, and a trigger matching procedure is performed to read out strips underneath the region of interest. The strip-TDS…
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