| Zugriffsnummer | 43041 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Neutron-induced background in the CONUS experiment |
| Autor(in); Institution |
Hakenmüller, J.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Buck, C.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Fülber, K; Preussen Elektra GmbH, Kernkraftwerk Brokdorf, Osterende, Brokdorf, GERMANY
Heusser, G.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Zboril, M.; 6.4, Neutronenstrahlung, PTB-Braunschweig
Klages, T.; 6.4, Neutronenstrahlung, PTB-Braunschweig
Lindner, M.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Lücke, A.; 6.4, Neutronenstrahlung, PTB-Braunschweig
Maneschg, M.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Reginatto, M.; 6.4, Neutronenstrahlung, PTB-Braunschweig
Rink, T.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Schierhuber, T.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Solasse, D.; Preussen Elektra GmbH, Kernkraftwerk Brokdorf, Osterende, Brokdorf, GERMANY
Strecker, H.; Max-Planck-Institut für Kernphysik, Heidelberg, GERMANY
Wink, R.; Preussen Elektra GmbH, Kernkraftwerk Brokdorf, Osterende, Brokdorf, GERMANY
Zimbal, A.; 6.4, Neutronenstrahlung, PTB-Braunschweig
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| Quelle/Jahr | European Physical Journal C: 79 (2019), 699, 1 - 27 |
| ISSN | 1434-6044 (PRINT) ; 1434-6052 (ONLINE) |
| DOI | |
| URL | |
| Verlag | Heidelberg: Springer |
| Freie Schlagworte | neutron spectrometry ; Bonner sphere spectrometer ; neutron attenuation ; low background ; gamma-ray spectroscopy ; Monte carlo simulation |
| Zusammenfassung | CONUS is a novel experiment aiming at detecting elastic neutrino–nucleus scattering in the almost fully coherent regime using high-purity germanium (Ge) detectors and a reactor as antineutrino source. The detector setup is installed at the commercial nuclear power plant in Brokdorf, Germany, at a short distance to the reactor core to guarantee a high antineutrino flux. A good understanding of neutron-induced backgrounds is required, as the neutron recoil signals can mimic the predicted neutrino interactions. Especially events correlated with the reactor thermal power are troublesome. On-site measurements revealed such a correlated, highly thermalized neutron field with a maximum fluence rate of (745±30)cm-2day-1. These neutrons, produced inside the reactor core, are reduced by a factor of ˜1020 on their way to the CONUS shield. With a high-purity Ge detector without shield the γ-ray background was examined including thermal power correlated 16N decay products and neutron capture γ-lines. Using the measured neutron spectrum as input, Monte Carlo simulations demonstrated that the thermal power correlated field is successfully mitigated by the CONUS shield. The reactor-induced background contribution in the region of interest is exceeded by the expected signal by at least one order of magnitude assuming a realistic ionization quenching factor. |
| Themenbereich der Metrologie | Ionisierende Strahlung |
Zitierung
Hakenmüller, J., Buck, C., Fülber, K., Heusser, G., Zboril, M., Klages, T., Lindner, M., Lücke, A., Maneschg, M., Reginatto, M., Rink, T., Schierhuber, T., Solasse, D., Strecker, H., Wink, R., & Zimbal, A. (2019). Neutron-induced background in the CONUS experiment. European Physical Journal C, 79(699), 1–27. https://doi.org/10.1140/epjc/s10052-019-7160-2