TY - JOUR
T1 - A Segmented Total Energy Detector (sTED) optimized for (n, γ) cross-section measurements at n_TOF EAR2
AU - n-TOF Collaboration
AU - Alcayne, V.
AU - Cano-Ott, D.
AU - Garcia, J.
AU - González-Romero, E.
AU - Martínez, T.
AU - Rada, A. Pérez de
AU - Plaza, J.
AU - Sánchez-Caballero, A.
AU - Balibrea-Correa, J.
AU - Domingo-Pardo, C.
AU - Lerendegui-Marco, J.
AU - Casanovas, A.
AU - Calviño, F.
AU - Aberle, O.
AU - Altieri, S.
AU - Amaducci, S.
AU - Andrzejewski, J.
AU - Babiano-Suarez, V.
AU - Bacak, M.
AU - Beltrami, C.
AU - Bennett, S.
AU - Bernardes, A. P.
AU - Berthoumieux, E.
AU - Beyer, R.
AU - Boromiza, M.
AU - Bosnar, D.
AU - Caamaño, M.
AU - Calviani, M.
AU - Castelluccio, D. M.
AU - Cerutti, F.
AU - Cescutti, G.
AU - Chasapoglou, S.
AU - Chiaveri, E.
AU - Colombetti, P.
AU - Colonna, N.
AU - Camprini, P. Console
AU - Cortés, G.
AU - Cortés-Giraldo, M. A.
AU - Cosentino, L.
AU - Dellmann, S.
AU - Di Castro, M.
AU - Di Maria, S.
AU - Diakaki, M.
AU - Dietz, M.
AU - Dressler, R.
AU - Dupont, E.
AU - Durán, I.
AU - Eleme, Z.
AU - Fargier, S.
AU - Jenkins, D. G.
N1 - © 2024 The Author(s)
PY - 2024/4
Y1 - 2024/4
N2 - The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron-induced reaction cross-sections of interest in nuclear technologies, astrophysics, and other applications. Since 2014, Experimental ARea 2 (EAR2) is operational and delivers a neutron fluence of ∼4⋅107 neutrons per nominal proton pulse, which is ∼50 times higher than the one of Experimental ARea 1 (EAR1) of ∼8⋅105 neutrons per pulse. The high neutron flux at EAR2 results in high counting rates in the detectors that challenged the previously existing capture detection systems. For this reason, a Segmented Total Energy Detector (sTED) has been developed to overcome the limitations in the detector's response, by reducing the active volume per module and by using a photo-multiplier (PMT) optimized for high counting rates. This paper presents the main characteristics of the sTED, including energy and time resolution, response to γ-rays, and provides as well details of the use of the Pulse Height Weighting Technique (PHWT) with this detector. The sTED has been validated to perform neutron-capture cross-section measurements in EAR2 in the neutron energy range from thermal up to at least 400 keV. The detector has already been successfully used in several measurements at n_TOF EAR2.
AB - The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutron-induced reaction cross-sections of interest in nuclear technologies, astrophysics, and other applications. Since 2014, Experimental ARea 2 (EAR2) is operational and delivers a neutron fluence of ∼4⋅107 neutrons per nominal proton pulse, which is ∼50 times higher than the one of Experimental ARea 1 (EAR1) of ∼8⋅105 neutrons per pulse. The high neutron flux at EAR2 results in high counting rates in the detectors that challenged the previously existing capture detection systems. For this reason, a Segmented Total Energy Detector (sTED) has been developed to overcome the limitations in the detector's response, by reducing the active volume per module and by using a photo-multiplier (PMT) optimized for high counting rates. This paper presents the main characteristics of the sTED, including energy and time resolution, response to γ-rays, and provides as well details of the use of the Pulse Height Weighting Technique (PHWT) with this detector. The sTED has been validated to perform neutron-capture cross-section measurements in EAR2 in the neutron energy range from thermal up to at least 400 keV. The detector has already been successfully used in several measurements at n_TOF EAR2.
KW - Monte Carlo simulation
KW - Neutron capture
KW - PHWT
KW - Scintillation detectors
UR - http://www.scopus.com/inward/record.url?scp=85182899484&partnerID=8YFLogxK
U2 - 10.1016/j.radphyschem.2024.111525
DO - 10.1016/j.radphyschem.2024.111525
M3 - Article
AN - SCOPUS:85182899484
SN - 0969-806X
VL - 217
JO - Radiation Physics and Chemistry
JF - Radiation Physics and Chemistry
M1 - 111525
ER -