The first test of a monolithic silicon pixel detector ASIC for the detection of electromagnetic showers of TeV energy in the FASER experiment at the LHC

The FASER experiment at the LHC is designed to look for new, long-lived fundamental particles. A W -Si preshower detector is currently under construction, with the objective of enabling the discrimination of photon pairs with O(TeV) energies and separation down to 200 mu m, extending the discovery potential of the experiment. The detector will be based on a new monolithic silicon pixel sensor in 130 nm SiGe BiCMOS. The first test of the ASIC from a pre-production run shows that the building blocks of the monolithic silicon pixel detector are functional.

Automated summary

The FASER experiment at the LHC aims to search for new, long-lived fundamental particles. The development of a W-Si preshower detector based on a new monolithic silicon pixel sensor is expected to enhance the experiment's discovery potential. Initial tests of the sensor's components have shown positive results.