Speaker
Description
The increased particle flux at the High-Luminosity Large Hadron Collider (HL-LHC) will pose a significant challenge to the ATLAS detector's performance, particularly in the forward region. To address this, a novel High-Granularity Timing Detector (HGTD) will be installed in front of the liquid Argon end-cap calorimeters. The HGTD is a key upgrade for pile-up mitigation and luminosity measurement, and will augment the new all-silicon Inner Tracker in the pseudo-rapidity range of 2.4 to 4.0.
The detector will consist of two double-sided layers of silicon sensors, leveraging Low-Gain Avalanche Detector (LGAD) technology to achieve the high signal-to-noise ratio necessary for precision timing. With a granularity of 1.3 mm × 1.3 mm and a total of 3.6 to 3.7 million channels, the HGTD is designed to provide a timing resolution as good as 30 ps per track. This capability will allow for the precise assignment of charged particles to their correct vertex, thereby significantly improving reconstruction and trigger performance in the high-pile-up environment of the HL-LHC.
This talk will provide an overview of the current status and our work on developing the HGTD, from the initial assembly of the detector modules to the final testing and loading procedures that ensure the detector is ready for installation. We will cover the specific challenges and solutions encountered during these critical phases of the project.
