Characterization of TRIGA RC-1 neutron irradiation facilities for radiation damage testing

Chiesa, D.; Carta, M.; Fabrizio, V.; Falconi, Luca; Grossi, A.; Nastasi, M.; Palomba, M.; Pozzi, S.; Previtali, E.; Rancoita, P.G.; Ranghetti, Barbara; Tacconi, M.

doi:10.1140/epjp/s13360-020-00334-7

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…This is obtained by having at least a main resonance of a (n,γ) capture or the cross section peak of a threshold reaction in each group, so that there is at least one reaction induced in a non-negligible percentage by neutrons in that energy range. On the basis of the experience gained through the application of this method to the characterization of neutron fluxes at nuclear reactors and spallation sources [4], [7], [12], fully satisfactory results can be obtained by measuring some tens of reactions and defining 10 energy groups or a few more.…”

Section: Multi-foil Activation and Unfolding Methodsmentioning

confidence: 99%

Measurements of neutron fields in a wide energy range using multi-foil activation analysis

Chiesa,

Cazzaniga,

Nastasi

et al. 2021

Preprint

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An accurate characterization of the neutron fields at spallation sources is crucial for many applications based on neutron irradiations, such as radiation damage tests that need a precise dose estimate. In this work we present the neutron flux measurements performed with the multi-foil activation technique in the ROTAX and ChipIr beamlines of the ISIS spallation source, characterized by moderated and unmoderated spectra, respectively. We selected many different activation reactions to cover a wide energy range, from thermal to very fast neutrons up to about 100 MeV. By applying a Bayesian unfolding algorithm, we demonstrate the effectiveness of this technique in measuring the neutron flux intensity and energy spectrum with precision and accuracy.

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Section: Multi-foil Activation and Unfolding Methodsmentioning

confidence: 99%

Measurements of neutron fields in a wide energy range using multi-foil activation analysis

Chiesa,

Cazzaniga,

Nastasi

et al. 2021

Preprint

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“…al. at two irradiation facilities of the TRIGA Mark II reactor at ENEA Casaccia Research Center, Italy, for radiation damage tests [4]. Presently, a day neutron activation technique is widely used for measuring neutron and gamma photonic flux at the beam ports of the TRIGA research reactor [5][6][7].…”

Section: Baecmentioning

confidence: 99%

Optimizing Neutronic and Photonic Performance in Irradiation Systems of Symmetric TRIGA Cores

Shauddin

2023

Atom Indo.

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The BAEC TRIGA MARK-II Research Reactor (BTRR) in Bangladesh has been used for a wide range of purposes, including basic and applied nuclear research and human resource development. Therefore, its core management should be flexible to meet various objectives with different priorities and to deliver the best possible outcome. In this study, neutron and gamma photon flux variation was studied at different radial and axial irradiation systems of the current core (C-0) as well as six symmetric reconfigurations (C-1, C-2, C-3, C-4, C-5, and C-6) of the existing BTRR using the universal MCNP code. While keeping the exact core component and material density, the symmetric reconfigured cores were modeled based on core criticality calculation and excess reactivity in the critical state. Finally, it was observed that the reconfigured core C-1 has the best neutronic and photonic performance at the irradiation systems compared to other reconfigured cores, against the reference core C-0.

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“…To check the 6 LiF coated SG01XL SiC radiation hardness, we exposed the device to a total neutron fluence of 10 13 cm −2 at the ENEA Casaccia TRIGA reactor [12]. This fluence value was chosen as it would represent a three years exposure in the e_LiBANS thermal neutron facility at maximumm rate.…”

Section: Silicon Carbide Neutron Detectorsmentioning

confidence: 99%

Development of gamma insensitive silicon carbide diagnostics to qualify intense thermal and epithermal neutron fields

Planell¹,

Costa²,

Durisi³

et al. 2020

J. Inst.

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The e\_LiBANS project aims at creating accelerator based compact neutron facilities for diverse interdisciplinary applications. After the successful setting up and characterization of a thermal neutron source based on a medical electron LINAC, a similar assembly for epithermal neutrons has been developed. The project is based on an Elekta 18 MV LINAC coupled with a photoconverter-moderator system which deploys the (γ,n) photonuclear reaction to convert a bremsstrahlung photon beam into a neutron field. This communication describes the development of novel diagnostics to qualify the thermal and epithermal neutron fields that have been produced. In particular, a proof of concept for the use of silicon carbide photodiodes as thermal neutron rate detector is presented.

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Characterization of TRIGA RC-1 neutron irradiation facilities for radiation damage testing

Cited by 5 publications

References 25 publications

Measurements of neutron fields in a wide energy range using multi-foil activation analysis

Measurements of neutron fields in a wide energy range using multi-foil activation analysis

Optimizing Neutronic and Photonic Performance in Irradiation Systems of Symmetric TRIGA Cores

Development of gamma insensitive silicon carbide diagnostics to qualify intense thermal and epithermal neutron fields

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