Method to Reduce Noise for Measurement of $^7$Be and $^8$B Solar Neutrinos on Gallium-71
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866909404021915648 |
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| author | Folkerts, Jonathan Solomey, Nick Hartsock, Brooks Nolan, Tyler Pacheco, Octavio Pawloski, Gregory |
| author_facet | Folkerts, Jonathan Solomey, Nick Hartsock, Brooks Nolan, Tyler Pacheco, Octavio Pawloski, Gregory |
| contents | Gallium solar neutrino experiments have historically used radiochemical counting to determine the event rate. A detector which directly measures the ejected electron and de-excitation gamma could reduce background counting rates by way of a double-pulse technique. We find this reduction could be as large as 10 orders of magnitude in a 100 ton detector. In this process, the detector measures the excited nuclear final state of the germanium after an electron neutrino interacts with gallium nucleus through the charged-current interaction. This results in a loss of approximately 90\% of the total neutrino signal, but higher energy processes are less suppressed. The neutrinos resulting from this higher energy selection are predominantly from the {}$^8$B and {}$^7$Be solar neutrino fluxes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_10157 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Method to Reduce Noise for Measurement of $^7$Be and $^8$B Solar Neutrinos on Gallium-71 Folkerts, Jonathan Solomey, Nick Hartsock, Brooks Nolan, Tyler Pacheco, Octavio Pawloski, Gregory High Energy Physics - Experiment Instrumentation and Detectors Gallium solar neutrino experiments have historically used radiochemical counting to determine the event rate. A detector which directly measures the ejected electron and de-excitation gamma could reduce background counting rates by way of a double-pulse technique. We find this reduction could be as large as 10 orders of magnitude in a 100 ton detector. In this process, the detector measures the excited nuclear final state of the germanium after an electron neutrino interacts with gallium nucleus through the charged-current interaction. This results in a loss of approximately 90\% of the total neutrino signal, but higher energy processes are less suppressed. The neutrinos resulting from this higher energy selection are predominantly from the {}$^8$B and {}$^7$Be solar neutrino fluxes. |
| title | Method to Reduce Noise for Measurement of $^7$Be and $^8$B Solar Neutrinos on Gallium-71 |
| topic | High Energy Physics - Experiment Instrumentation and Detectors |
| url | https://arxiv.org/abs/2312.10157 |