TY  - JOUR
AU  - n_TOF Collaboration (Alcayne, V. et al
AU  - Balibrea-Correa, J.
AU  - Domingo-Pardo, C.
AU  - Lerendegui-Marco, J.
AU  - Babiano-Suarez, V.
AU  - Ladarescu, I.
PY  - 2024
DA  - 2024//
TI  - A Segmented Total Energy Detector (sTED) optimized for (n,γ) cross-section measurements at n_TOF EAR2
T2  - Radiat. Phys. Chem.
JO  - Radiation Physics and Chemistry
SP  - 11pp
VL  - 217
PB  - Pergamon-Elsevier Science Ltd
KW  - Neutron capture
KW  - PHWT
KW  - Scintillation detectors
KW  - Monte Carlo simulation
AB  - The neutron time-of-flight facility n_TOF at CERN is a spallation source dedicated to measurements of neutroninduced 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 similar to 4 center dot 10(7) neutrons per nominal proton pulse, which is similar to 50 times higher than the one of Experimental ARea 1 (EAR1) of similar to 8 center dot 10(5) 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 gamma-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.
SN  - 0969-806x
UR  - https://arxiv.org/abs/2403.09759
UR  - https://doi.org/https://arxiv.org/abs/2403.09759
DO  - https://arxiv.org/abs/2403.09759
LA  - English
N1  - WOS:001185584800001
ID  - n_TOFCollaborationAlcayne_etal2024
ER  -