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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/2403.18097 |
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| _version_ | 1866910731997282304 |
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| author | Tsverava, N. Adamov, G. Chokheli, D. Nishiguchi, H. Toriashvili, T. Tsamalaidze, Z. |
| author_facet | Tsverava, N. Adamov, G. Chokheli, D. Nishiguchi, H. Toriashvili, T. Tsamalaidze, Z. |
| contents | The COMET experiment focuses on searching for the direct conversion of a muon into an electron on an aluminum nucleus without emitting a neutrino (so-called $μ\rightarrow e$ conversion). This conversion violates the lepton flavor conservation law, a fundamental principle in the Standard Model. The COMET experiment aims to achieve the muon-to-electron conversion sensitivity on a level of $10^{-17}$. The Straw Tracker System (STS) based on straw tubes could provide the necessary spatial resolution of 150 $μ$m to achieve an momentum resolution for 105 MeV/c electrons better than 200 keV/c.
The COMET experiment will be separated into two phases. Phase-I will operate with the 3.2-kW 8-GeV-proton beam, and Phase-II will operate with the beam intensity increased to 56 kW. The STS must operate in a vacuum with the inner pressure of 1 bar applied to straws. The initial design of 10-mm-diameter straws developed for Phase-I will not be as efficient with the 20 times higher beam intensity of Phase II, but the new STS design based on 5-mm-diameter 12-$μ$m-thick straws could fully satisfy the required efficiency. The mechanical properties of these straws, such as sagging, displacement, and dependence of the diameter on overpressure, are discussed in this article. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_18097 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Development and property study of the $12 μ$m thick straw tubes with a diameter of 5 mm for the COMET Straw Tracker System Tsverava, N. Adamov, G. Chokheli, D. Nishiguchi, H. Toriashvili, T. Tsamalaidze, Z. Instrumentation and Detectors High Energy Physics - Experiment The COMET experiment focuses on searching for the direct conversion of a muon into an electron on an aluminum nucleus without emitting a neutrino (so-called $μ\rightarrow e$ conversion). This conversion violates the lepton flavor conservation law, a fundamental principle in the Standard Model. The COMET experiment aims to achieve the muon-to-electron conversion sensitivity on a level of $10^{-17}$. The Straw Tracker System (STS) based on straw tubes could provide the necessary spatial resolution of 150 $μ$m to achieve an momentum resolution for 105 MeV/c electrons better than 200 keV/c. The COMET experiment will be separated into two phases. Phase-I will operate with the 3.2-kW 8-GeV-proton beam, and Phase-II will operate with the beam intensity increased to 56 kW. The STS must operate in a vacuum with the inner pressure of 1 bar applied to straws. The initial design of 10-mm-diameter straws developed for Phase-I will not be as efficient with the 20 times higher beam intensity of Phase II, but the new STS design based on 5-mm-diameter 12-$μ$m-thick straws could fully satisfy the required efficiency. The mechanical properties of these straws, such as sagging, displacement, and dependence of the diameter on overpressure, are discussed in this article. |
| title | Development and property study of the $12 μ$m thick straw tubes with a diameter of 5 mm for the COMET Straw Tracker System |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2403.18097 |