Expected performance of the ALPIDE pixel layers in ALICE FoCal
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912308149616640 |
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| author | Yi, Jie Rauch, Max Philip |
| author_facet | Yi, Jie Rauch, Max Philip |
| contents | The ALICE experiment is designed to study ultra-relativistic heavy-ion collisions at the Large Hadron Collider (LHC). As part of its major upgrades for Run 4, the Forward Calorimeter (FoCal) will be installed during Long Shutdown 3 (LS3). FoCal enables precise measurements of direct photon production at forward rapidity, providing a sensitive probe of the gluon distribution in protons and nuclei.
This paper introduces the expected performance of the forward electromagnetic calorimeter (FoCal-E) and presents several potential strategies for mitigating occupancy and BUSY violation challenges in the pixel layers of FoCal-E. Beam test results demonstrate that back biasing effectively reduces pixel occupancy. Meanwhile, SystemC simulations explore additional mitigation strategies-such as grid masking and a regional trigger-to further minimize BUSY violations and enhance detector performance under high-luminosity conditions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_03018 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Expected performance of the ALPIDE pixel layers in ALICE FoCal Yi, Jie Rauch, Max Philip Instrumentation and Detectors High Energy Physics - Experiment The ALICE experiment is designed to study ultra-relativistic heavy-ion collisions at the Large Hadron Collider (LHC). As part of its major upgrades for Run 4, the Forward Calorimeter (FoCal) will be installed during Long Shutdown 3 (LS3). FoCal enables precise measurements of direct photon production at forward rapidity, providing a sensitive probe of the gluon distribution in protons and nuclei. This paper introduces the expected performance of the forward electromagnetic calorimeter (FoCal-E) and presents several potential strategies for mitigating occupancy and BUSY violation challenges in the pixel layers of FoCal-E. Beam test results demonstrate that back biasing effectively reduces pixel occupancy. Meanwhile, SystemC simulations explore additional mitigation strategies-such as grid masking and a regional trigger-to further minimize BUSY violations and enhance detector performance under high-luminosity conditions. |
| title | Expected performance of the ALPIDE pixel layers in ALICE FoCal |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2504.03018 |