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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2406.08144 |
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| _version_ | 1866911914352705536 |
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| author | Sawan Tambave, G. Bouly, J. L. Bourrion, O. Chujo, T. Das, A. Inaba, M. Kashyap, V. K. S. Krug, C. Laha, R. Loizides, C. Mohanty, B. Ponchant, M. M. Mondal N. Sharma, K. P. Singh, R. Tourres, D. |
| author_facet | Sawan Tambave, G. Bouly, J. L. Bourrion, O. Chujo, T. Das, A. Inaba, M. Kashyap, V. K. S. Krug, C. Laha, R. Loizides, C. Mohanty, B. Ponchant, M. M. Mondal N. Sharma, K. P. Singh, R. Tourres, D. |
| contents | This paper reports the development and testing of n-type silicon pad array detectors targeted for the Forward Calorimeter (FoCal) detector, which is an upgrade of the ALICE detector at CERN, scheduled for data taking in Run~4~(2029-2034). The FoCal detector includes hadronic and electromagnetic calorimeters, with the latter made of tungsten absorber layers and granular silicon pad arrays read out using the High Granularity Calorimeter Readout Chip~(HGCROC). This paper covers the Technology Computer-Aided Design (TCAD) simulations, the fabrication process, current versus voltage (IV) and capacitance versus voltage (CV) measurements, test results with a blue LED and $^{90}$Sr beta source, and neutron radiation hardness tests. IV measurements for the detector showed that 90\% of the pads had leakage current below 10~nA at full depletion voltage. Simulations predicted a breakdown voltage of 1000~V and practical tests confirmed stable operation up to 500~V without breakdown. CV measurements in the data and the simulations gave a full depletion voltage of around 50~V at a capacitance of 35~pF. LED tests verified that all detector pads responded correctly. Additionally, the 1$\times$1 cm$^2$ pads were also tested with the neutron radiations at a fluence of $5\times10^{13}$ 1~MeV~n$_{eq}$/cm$^2$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_08144 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Design,fabrication and characterization of 8x9 n-type silicon pad array for sampling calorimetry Sawan Tambave, G. Bouly, J. L. Bourrion, O. Chujo, T. Das, A. Inaba, M. Kashyap, V. K. S. Krug, C. Laha, R. Loizides, C. Mohanty, B. Ponchant, M. M. Mondal N. Sharma, K. P. Singh, R. Tourres, D. Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment This paper reports the development and testing of n-type silicon pad array detectors targeted for the Forward Calorimeter (FoCal) detector, which is an upgrade of the ALICE detector at CERN, scheduled for data taking in Run~4~(2029-2034). The FoCal detector includes hadronic and electromagnetic calorimeters, with the latter made of tungsten absorber layers and granular silicon pad arrays read out using the High Granularity Calorimeter Readout Chip~(HGCROC). This paper covers the Technology Computer-Aided Design (TCAD) simulations, the fabrication process, current versus voltage (IV) and capacitance versus voltage (CV) measurements, test results with a blue LED and $^{90}$Sr beta source, and neutron radiation hardness tests. IV measurements for the detector showed that 90\% of the pads had leakage current below 10~nA at full depletion voltage. Simulations predicted a breakdown voltage of 1000~V and practical tests confirmed stable operation up to 500~V without breakdown. CV measurements in the data and the simulations gave a full depletion voltage of around 50~V at a capacitance of 35~pF. LED tests verified that all detector pads responded correctly. Additionally, the 1$\times$1 cm$^2$ pads were also tested with the neutron radiations at a fluence of $5\times10^{13}$ 1~MeV~n$_{eq}$/cm$^2$. |
| title | Design,fabrication and characterization of 8x9 n-type silicon pad array for sampling calorimetry |
| topic | Instrumentation and Detectors High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2406.08144 |