Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2
The increase in instantaneous luminosity during the high-luminosity phase of the LHC represents a significant challenge for future detectors. A strategy to cope with high-pileup conditions is to add a fourth dimension to the measurements of the hits, by exploiting the time separation of the various...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Instruments |
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| Online Access: | https://www.mdpi.com/2410-390X/6/1/7 |
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| author | Stefano Perazzini Fabio Ferrari Vincenzo Maria Vagnoni on behalf of the LHCb ECAL Upgrade-2 R&D Group |
| author_facet | Stefano Perazzini Fabio Ferrari Vincenzo Maria Vagnoni on behalf of the LHCb ECAL Upgrade-2 R&D Group |
| author_sort | Stefano Perazzini |
| collection | DOAJ |
| description | The increase in instantaneous luminosity during the high-luminosity phase of the LHC represents a significant challenge for future detectors. A strategy to cope with high-pileup conditions is to add a fourth dimension to the measurements of the hits, by exploiting the time separation of the various proton–proton primary collisions. According to LHCb simulation studies, resolutions of about 10–20 picoseconds, at least an order of magnitude shorter than the average time span between primary interactions, would be greatly beneficial for the physics reach of the experiment. Microchannel plate (MCP) photomultipliers are compact devices capable of measuring the arrival time of charged particles with the required resolution. The technology of large-area picosecond photodetectors (LAPPDs) is under investigation to implement a timing layer that can be placed within a sampling calorimeter module with the purpose of measuring the arrival time of electromagnetic showers. LAPPD performances, using a Gen-I tile with a delay-line anode and a Gen-II with a capacitively coupled anode, have been measured thoroughly both with laser (wavelength of 405 nm and pulse width of 27.5 ps FWHM) and high-energy electron (1–5.8 GeV) beams. Time resolutions of the order of 30 ps for single photoelectrons and 15 ps for electromagnetic showers initiated by 5-GeV electrons, as measured at the shower maximum, are obtained. |
| first_indexed | 2024-03-09T19:39:58Z |
| format | Article |
| id | doaj.art-f1cb9f8409e34155b0e0795c836f622c |
| institution | Directory Open Access Journal |
| issn | 2410-390X |
| language | English |
| last_indexed | 2024-03-09T19:39:58Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Instruments |
| spelling | doaj.art-f1cb9f8409e34155b0e0795c836f622c2023-11-24T01:44:32ZengMDPI AGInstruments2410-390X2022-01-0161710.3390/instruments6010007Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2Stefano Perazzini0Fabio Ferrari1Vincenzo Maria Vagnoni2on behalf of the LHCb ECAL Upgrade-2 R&D Group3National Institute for Nuclear Physics, 40127 Bologna, ItalyNational Institute for Nuclear Physics, 40127 Bologna, ItalyNational Institute for Nuclear Physics, 40127 Bologna, ItalyLHCb Experiment, CERN, CH-1211 Geneva, SwitzerlandThe increase in instantaneous luminosity during the high-luminosity phase of the LHC represents a significant challenge for future detectors. A strategy to cope with high-pileup conditions is to add a fourth dimension to the measurements of the hits, by exploiting the time separation of the various proton–proton primary collisions. According to LHCb simulation studies, resolutions of about 10–20 picoseconds, at least an order of magnitude shorter than the average time span between primary interactions, would be greatly beneficial for the physics reach of the experiment. Microchannel plate (MCP) photomultipliers are compact devices capable of measuring the arrival time of charged particles with the required resolution. The technology of large-area picosecond photodetectors (LAPPDs) is under investigation to implement a timing layer that can be placed within a sampling calorimeter module with the purpose of measuring the arrival time of electromagnetic showers. LAPPD performances, using a Gen-I tile with a delay-line anode and a Gen-II with a capacitively coupled anode, have been measured thoroughly both with laser (wavelength of 405 nm and pulse width of 27.5 ps FWHM) and high-energy electron (1–5.8 GeV) beams. Time resolutions of the order of 30 ps for single photoelectrons and 15 ps for electromagnetic showers initiated by 5-GeV electrons, as measured at the shower maximum, are obtained.https://www.mdpi.com/2410-390X/6/1/7microchannel plateselectromagnetic calorimeterLarge-Area Picosecond Photo-Detector |
| spellingShingle | Stefano Perazzini Fabio Ferrari Vincenzo Maria Vagnoni on behalf of the LHCb ECAL Upgrade-2 R&D Group Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 Instruments microchannel plates electromagnetic calorimeter Large-Area Picosecond Photo-Detector |
| title | Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 |
| title_full | Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 |
| title_fullStr | Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 |
| title_full_unstemmed | Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 |
| title_short | Development of an MCP-Based Timing Layer for the LHCb ECAL Upgrade-2 |
| title_sort | development of an mcp based timing layer for the lhcb ecal upgrade 2 |
| topic | microchannel plates electromagnetic calorimeter Large-Area Picosecond Photo-Detector |
| url | https://www.mdpi.com/2410-390X/6/1/7 |
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