The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC

FASER is searching for light, weakly-interacting particles at the Large Hadron Collider. The first search for Axion-like particles (ALPs) decaying to a photon pair using data collected in 2022 and 2023 was performed and successfully excluded regions not previously ruled out. To further reduce neutri...

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Main Author: Hayakawa Daiki
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2025/05/epjconf_calor2024_00056.pdf
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author Hayakawa Daiki
author_facet Hayakawa Daiki
author_sort Hayakawa Daiki
collection DOAJ
description FASER is searching for light, weakly-interacting particles at the Large Hadron Collider. The first search for Axion-like particles (ALPs) decaying to a photon pair using data collected in 2022 and 2023 was performed and successfully excluded regions not previously ruled out. To further reduce neutrino background, a new preshower detector will be installed by the end of 2024. The detector is based on a monolithic active pixel sensor in 130 nm SiGe BiCMOS, which will allow resolving the photon pairs interacting in the preshower detector. The final ASICs have been produced in May 2024 and are currently being validated.
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spelling doaj-art-10cec837225d43f9bf62f73421d7e2352025-08-20T01:51:57ZengEDP SciencesEPJ Web of Conferences2100-014X2025-01-013200005610.1051/epjconf/202532000056epjconf_calor2024_00056The W-Si High Precision Preshower Detector of the FASER Experiment at the LHCHayakawa Daiki0Department of Physics, Chiba UniversityFASER is searching for light, weakly-interacting particles at the Large Hadron Collider. The first search for Axion-like particles (ALPs) decaying to a photon pair using data collected in 2022 and 2023 was performed and successfully excluded regions not previously ruled out. To further reduce neutrino background, a new preshower detector will be installed by the end of 2024. The detector is based on a monolithic active pixel sensor in 130 nm SiGe BiCMOS, which will allow resolving the photon pairs interacting in the preshower detector. The final ASICs have been produced in May 2024 and are currently being validated.https://www.epj-conferences.org/articles/epjconf/pdf/2025/05/epjconf_calor2024_00056.pdf
spellingShingle Hayakawa Daiki
The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
EPJ Web of Conferences
title The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
title_full The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
title_fullStr The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
title_full_unstemmed The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
title_short The W-Si High Precision Preshower Detector of the FASER Experiment at the LHC
title_sort w si high precision preshower detector of the faser experiment at the lhc
url https://www.epj-conferences.org/articles/epjconf/pdf/2025/05/epjconf_calor2024_00056.pdf
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AT hayakawadaiki wsihighprecisionpreshowerdetectorofthefaserexperimentatthelhc