GENESIS: Gamma Energy Neutron Energy Spectrometer for Inelastic Scattering
Document Type
Article
Publication Date
1-23-2024
Abstract
Improved neutron inelastic scattering cross section data are needed to inform integral benchmark studies and advance applications in a wide variety of areas including nuclear energy, stockpile stewardship, nonproliferation, and space exploration. Neutron inelastic scattering also serves as a non-selective probe of low-lying nuclear structure. To help meet these needs, the Gamma Energy Neutron Energy Spectrometer for Inelastic Scattering (GENESIS) was constructed at the 88-Inch Cyclotron at Lawrence Berkeley National Laboratory. This array couples high-resolution -ray detectors and fast neutron detectors to achieve single and coincident n/ detection over a broad energy range. The current configuration of the array includes 26 organic liquid scintillators and four high-purity germanium detectors (two single-crystal and two four-crystal CLOVER detectors with two-fold segmentation). The array was constructed with minimal supporting material and designed to cover a wide range of secondary particle angles and energies with limited inter-element scattering. Data acquisition is accomplished using Mesytec MDPP-16 multi-channel high-resolution digital pulse processing modules. The array characteristics, including -ray and neutron energy resolution, timing resolution, and detection efficiency were measured and used to validate a Geant4 model of the array. The primary sources of neutron background and the uncertainties in the determination of incident and secondary neutron energy were assessed. GENESIS provides a new capability to address nuclear data needs and facilitates the advancement of a wide range of nuclear applications.
Source Publication
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (ISSN 0168-9002 | e-ISSN 1872-9576)
Recommended Citation
Gordon, J. M., Batchelder, J. C., Bernstein, L. A., Bleuel, D. L., Brand, C. A., Brown, J. A., Goldblum, B. L., Frandsen, B. G., Laplace, T. A., & Nagel, T. (2024). GENESIS: Gamma Energy Neutron Energy Spectrometer for Inelastic Scattering. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1061, 169120. https://doi.org/10.1016/j.nima.2024.169120
Comments
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