Design Studies Of A Pulsed Quasimonoenergetic 2-keV Neutron Source For Calibration Of Low Threshold Dark Matter Detectors
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Chaplinsky, L. Fiorucci, S. Fink, C. W. Garcia-Sciveres, M. Guo, W. Hertel, S. A. Wuko, J. K. Li, X. Lin, J. Mahapatra, R. Matava, W. McKinsey, D. N. Osterman, D. Z. Patel, P. K. Penning, B. Pinckney, H. D. Platt, M. Qi, Y. Reed, M. Rischbieter, G. R. C Romani, R. K. Sorensen, P. Velan, V. Wang, G. Wang, Y. Watkins, S. L. Williams, M. R. |
| author_facet | Chaplinsky, L. Fiorucci, S. Fink, C. W. Garcia-Sciveres, M. Guo, W. Hertel, S. A. Wuko, J. K. Li, X. Lin, J. Mahapatra, R. Matava, W. McKinsey, D. N. Osterman, D. Z. Patel, P. K. Penning, B. Pinckney, H. D. Platt, M. Qi, Y. Reed, M. Rischbieter, G. R. C Romani, R. K. Sorensen, P. Velan, V. Wang, G. Wang, Y. Watkins, S. L. Williams, M. R. |
| contents | We describe design studies for a pulsed quasi-monoenergetic 2-keV neutron source for calibration of sub-keV nuclear recoils. Such a calibration is required for detectors sensitive to sub-GeV dark matter and also the coherent elastic scattering of reactor neutrinos. In our design, neutrons from a commercial deuterium-tritium generator are moderated to the keV scale and then filtered to the monoenergetic spectrum using a feature in the neutron cross section of scandium. In this approach, unmoderated high-energy neutrons form a challenging background, along with gammas from neutron capture in the moderator materials. We describe the optimization of the moderator+filter and shielding geometry, and find a geometry that in simulation achieves both the target neutron flux at 2 keV and subdominant rates of background interactions. Lastly, we describe a future path to lower-energy (few eV scale) calibrations using time-of-flight and sub-keV neutrons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_14722 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Design Studies Of A Pulsed Quasimonoenergetic 2-keV Neutron Source For Calibration Of Low Threshold Dark Matter Detectors Chaplinsky, L. Fiorucci, S. Fink, C. W. Garcia-Sciveres, M. Guo, W. Hertel, S. A. Wuko, J. K. Li, X. Lin, J. Mahapatra, R. Matava, W. McKinsey, D. N. Osterman, D. Z. Patel, P. K. Penning, B. Pinckney, H. D. Platt, M. Qi, Y. Reed, M. Rischbieter, G. R. C Romani, R. K. Sorensen, P. Velan, V. Wang, G. Wang, Y. Watkins, S. L. Williams, M. R. Instrumentation and Detectors High Energy Physics - Experiment We describe design studies for a pulsed quasi-monoenergetic 2-keV neutron source for calibration of sub-keV nuclear recoils. Such a calibration is required for detectors sensitive to sub-GeV dark matter and also the coherent elastic scattering of reactor neutrinos. In our design, neutrons from a commercial deuterium-tritium generator are moderated to the keV scale and then filtered to the monoenergetic spectrum using a feature in the neutron cross section of scandium. In this approach, unmoderated high-energy neutrons form a challenging background, along with gammas from neutron capture in the moderator materials. We describe the optimization of the moderator+filter and shielding geometry, and find a geometry that in simulation achieves both the target neutron flux at 2 keV and subdominant rates of background interactions. Lastly, we describe a future path to lower-energy (few eV scale) calibrations using time-of-flight and sub-keV neutrons. |
| title | Design Studies Of A Pulsed Quasimonoenergetic 2-keV Neutron Source For Calibration Of Low Threshold Dark Matter Detectors |
| topic | Instrumentation and Detectors High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2410.14722 |