- The ATLAS experiment will upgrade its Inner Detector to an all-silicon Inner Tracker (ITk) for the High-Luminosity LHC, consisting of pixel and strip detectors with barrel and end-cap regions using staves and petals.
- Silicon sensors in modules can crack at temperatures below -35°C, particularly during cooling system failures, rendering them inoperable, which was a critical issue for the ITk project.
- Mitigation strategies for petals focus on modifying adhesive choice and deposition patterns for module assembly and petal loading.
- The best strategy prevents cracks down to -45°C, with only a small percentage observed at -55°C after cycling, addressing expected cooling system problems and catastrophic failures.