Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors
The Ricochet experiment seeks to measure Coherent (neutral-current) Elastic Neutrino-Nucleus Scattering (CEνNS) using dark-matter-style detectors with sub-keV thresholds placed near a neutrino source, such as the MIT (research) Reactor (MITR), which operates at 5.5 MW generating approximately 2.2 ×...
| Principais autores: | , , , , , , , , , , |
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| Outros Autores: | |
| Formato: | Artigo |
| Publicado em: |
IOP Publishing
2019
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| Acesso em linha: | https://hdl.handle.net/1721.1/122283 |
| _version_ | 1826191229008740352 |
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| author | Leder, Alexander Friedrich Anderson, A.J. Billard, J. Figueroa-Feliciano, E. Formaggio, Joseph A Hasselkus, C. Newman, E. Palladino, K. Phuthi, Mgcini Keith Winslow, Lindley Zhang, L. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Leder, Alexander Friedrich Anderson, A.J. Billard, J. Figueroa-Feliciano, E. Formaggio, Joseph A Hasselkus, C. Newman, E. Palladino, K. Phuthi, Mgcini Keith Winslow, Lindley Zhang, L. |
| author_sort | Leder, Alexander Friedrich |
| collection | MIT |
| description | The Ricochet experiment seeks to measure Coherent (neutral-current) Elastic Neutrino-Nucleus Scattering (CEνNS) using dark-matter-style detectors with sub-keV thresholds placed near a neutrino source, such as the MIT (research) Reactor (MITR), which operates at 5.5 MW generating approximately 2.2 × 10¹⁸ ν/second in its core. Currently, Ricochet is characterizing the backgrounds at MITR, the main component of which comes in the form of neutrons emitted from the core simultaneous with the neutrino signal. To characterize this background, we wrapped Bonner cylinders around a ³₂He thermal neutron detector, whose data was then unfolded via a Markov Chain Monte Carlo (MCMC) to produce a neutron energy spectrum across several orders of magnitude. We discuss the resulting spectrum and its implications for deploying Ricochet at the MITR site as well as the feasibility of reducing this background level via the addition of polyethylene shielding around the detector setup. |
| first_indexed | 2024-09-23T08:52:38Z |
| format | Article |
| id | mit-1721.1/122283 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:52:38Z |
| publishDate | 2019 |
| publisher | IOP Publishing |
| record_format | dspace |
| spelling | mit-1721.1/1222832022-09-30T11:52:46Z Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors Leder, Alexander Friedrich Anderson, A.J. Billard, J. Figueroa-Feliciano, E. Formaggio, Joseph A Hasselkus, C. Newman, E. Palladino, K. Phuthi, Mgcini Keith Winslow, Lindley Zhang, L. Massachusetts Institute of Technology. Department of Physics The Ricochet experiment seeks to measure Coherent (neutral-current) Elastic Neutrino-Nucleus Scattering (CEνNS) using dark-matter-style detectors with sub-keV thresholds placed near a neutrino source, such as the MIT (research) Reactor (MITR), which operates at 5.5 MW generating approximately 2.2 × 10¹⁸ ν/second in its core. Currently, Ricochet is characterizing the backgrounds at MITR, the main component of which comes in the form of neutrons emitted from the core simultaneous with the neutrino signal. To characterize this background, we wrapped Bonner cylinders around a ³₂He thermal neutron detector, whose data was then unfolded via a Markov Chain Monte Carlo (MCMC) to produce a neutron energy spectrum across several orders of magnitude. We discuss the resulting spectrum and its implications for deploying Ricochet at the MITR site as well as the feasibility of reducing this background level via the addition of polyethylene shielding around the detector setup. 2019-09-25T20:13:54Z 2019-09-25T20:13:54Z 2018-02 2017-10 2019-03-21T18:41:55Z Article http://purl.org/eprint/type/JournalArticle 1748-0221 https://hdl.handle.net/1721.1/122283 Leder, A. et al. “Unfolding Neutron Spectrum with Markov Chain Monte Carlo at MIT Research Reactor with He-3 Neutral Current Detectors.” Journal of Instrumentation 13, 2 (February 2018): P02004–P02004 © 2018 IOP Publishing Ltd and Sissa Medialab http://dx.doi.org/10.1088/1748-0221/13/02/P02004 Journal of Instrumentation Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf IOP Publishing arXiv |
| spellingShingle | Leder, Alexander Friedrich Anderson, A.J. Billard, J. Figueroa-Feliciano, E. Formaggio, Joseph A Hasselkus, C. Newman, E. Palladino, K. Phuthi, Mgcini Keith Winslow, Lindley Zhang, L. Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title | Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title_full | Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title_fullStr | Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title_full_unstemmed | Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title_short | Unfolding neutron spectrum with Markov Chain Monte Carlo at MIT research Reactor with He-3 Neutral Current Detectors |
| title_sort | unfolding neutron spectrum with markov chain monte carlo at mit research reactor with he 3 neutral current detectors |
| url | https://hdl.handle.net/1721.1/122283 |
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