# A new dimension for ATLAS: The High Granularity Timing Detector

- Institution: CERN
- Speaker: Stefan Guindon
- Year: 2026
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3023707)
- Licence: [CERN](https://copyright.web.cern)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The LHC and ATLAS will undergo an ambitious upgrade program in preparation of the High Luminosity LHC to enable three times the current instantaneous luminosity. This unprecedented data-sample will allow us to perform state-of-the-art measurements at the energy frontier and will be our legacy of results in unexplored phase-space. To benefit fully from such a rich data-sample, a powerful new way to mitigate the effects of pile-up is to use high-precision timing information to distinguish between collisions occurring close in space but well-separated in time. In this talk, I will discuss the technical challenges of adding such a temporal dimension to ATLAS with the High Granularity Timing Detector (HGTD), which will use Low Gain avalanche Diodes (LGADs) to measure a time resolution of between 30 - 50 ps for its entire lifetime. In particular I will focus on the overall design, key recent results and the road towards its construction.

Coffee will be served at 10:30

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## Lectures

1. [A new dimension for ATLAS: The High Granularity Timing Detector](https://invisiblenetwork.ai/learn/cern/3023707/1019810ca1dc), 1 h 8 min (CERN's player)