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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2409.12927 |
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| _version_ | 1866917950682824704 |
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| author | Guliaeva, Vasilisa Kholodenko, Sergey Shmanin, Evgenii Anokhina, Anna |
| author_facet | Guliaeva, Vasilisa Kholodenko, Sergey Shmanin, Evgenii Anokhina, Anna |
| contents | Spaghetti-type calorimeters (SpaCal) are being considered as a potential solution for experiments at the High-Luminosity Large Hadron Collider (HL-LHC).
SpaCal modules consist of an absorber block with a matrix of holes filled with scintillating fibres. This geometry offers a flexible granularity. However, the total number of scintillating fibres per channel could exceed the available photocathode surface area, necessitating a light guide to efficiently collect and register the scintillating light from the scintillating fibres to a photomultiplier. The non-uniformities in the light collection would impact the energy resolution of the detector.
In this study, the impact of the light collection non-uniformity on the energy resolution is estimated for the various geometries of light guides using optical simulations~(GEANT4 simulation with optical photons). The study performed assumed a SpaCal prototype with $30\times 30$~mm$^2$ cell size and photomultipliers featuring realistic entrance window shapes and sizes, and explores different light guide designs. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_12927 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Contribution of the light-collection non-uniformity to the energy resolution for the spaghetti-type calorimeter modules Guliaeva, Vasilisa Kholodenko, Sergey Shmanin, Evgenii Anokhina, Anna High Energy Physics - Experiment Instrumentation and Detectors Spaghetti-type calorimeters (SpaCal) are being considered as a potential solution for experiments at the High-Luminosity Large Hadron Collider (HL-LHC). SpaCal modules consist of an absorber block with a matrix of holes filled with scintillating fibres. This geometry offers a flexible granularity. However, the total number of scintillating fibres per channel could exceed the available photocathode surface area, necessitating a light guide to efficiently collect and register the scintillating light from the scintillating fibres to a photomultiplier. The non-uniformities in the light collection would impact the energy resolution of the detector. In this study, the impact of the light collection non-uniformity on the energy resolution is estimated for the various geometries of light guides using optical simulations~(GEANT4 simulation with optical photons). The study performed assumed a SpaCal prototype with $30\times 30$~mm$^2$ cell size and photomultipliers featuring realistic entrance window shapes and sizes, and explores different light guide designs. |
| title | Contribution of the light-collection non-uniformity to the energy resolution for the spaghetti-type calorimeter modules |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2409.12927 |