Characterization of X3 Silicon Detectors for the ELISSA Array at ELI-NP

Chesnevskaya, S.; Balabanski, D. L.; Choudhury, D.; Cognata, M. La; Constantin, P.; Filipescu, D.; Ghiţă, D.; Guardo, G. L.; Lattuada, D.; Matei, C.; Rotaru, A.; Spitaleri, C.; State, A.; Xu, Y.

doi:10.1051/epjconf/201716501011

Cited by 2 publications

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“…The data are plotted after applying a Gaussian smearing with an energy-dependent sigma in order to simulate the detector energy resolution as reported from Micron and calculated in [9,10]. Despite the straggling in the target, the expected alpha-signal is well separated from the proton one, which in turn is (calculated to be) much greater, by nearly 9 orders of magnitude.…”

Section: Resultsmentioning

confidence: 99%

A Geant4-based Monte Carlo Tool for Nuclear Astrophysics

et al. 2018

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Abstract. Present and future gamma-beam facilities represent a great opportunity to validate and evaluate the cross-sections of many photonuclear reactions at near-threshold energies, whose data mostly come from theoretical calculations. We developed a Monte Carlo (MC) software that makes use of the validated tracking Geant4 libraries and the n-body event generator of ROOT libraries in order to provide a fast, realiable and complete MC tool to be used for nuclear physics experiments, with a particular focus on photo-nuclear processes. We discuss the results of the MC simulations performed in order to evaluate the effects of the electromagnetic background, the straggling of the emitted particles due to the target thickness and the resolution of the silicon detectors. Finally we present the preliminary results on some nuclear reactions involved in the p-process, which will be studied with ELISSA and the GBS at ELI-NP.

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Section: Resultsmentioning

confidence: 99%

A Geant4-based Monte Carlo Tool for Nuclear Astrophysics

et al. 2018

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“…Such configuration ensures a total angular coverage of 20 ≤ θ ≤ 160 in the laboratory system. Furthermore, the prototype of ELISSA has been constructed and tested at INFN-LNS with the α particle source and the 11 MeV 7 Li beam, and the preliminary experimental results show that the energy resolution is less than 1% and the position resolution reaches 1 mm [65][66][67][68].…”

Section: B Development Of Charged Particles Detector At Eli-npmentioning

confidence: 99%

Determination of the photodisintegration reaction rates involving charged particles: Systematic calculations and proposed measurements based on the facility for Extreme Light Infrastructure–Nuclear Physics

Lan

Luo

et al. 2018

Phys. Rev. C

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Photodisintegration reaction rates involving charged particles are of relevance to the p-process nucleosynthesis that aims at explaining the production of the stable neutron-deficient nuclides heavier than iron. In this study, considering the compound and pre-equilibrium reaction mechanisms, the cross sections and astrophysical rates of (γ,p) and (γ,α) reactions for about 3000 target nuclei with 10 ≤ Z ≤ 100 ranging from stable to proton dripline nuclei are computed. To study the sensitivity of the calculations to the optical model potentials (OMPs), both the phenomenological Woods-Saxon and the microscopic folding OMPs are taken into account. The systematic comparisons show that the reaction rates, especially for the (γ,α) reaction, are dramatically influenced by the OMPs. Thus the better determination of the OMP is crucial to reduce the uncertainties of the photodisintegration reaction rates involving charged particles. Meanwhile, a γ-beam facility at Extreme Light Infrastructure-Nuclear Physics (ELI-NP) is being developed, which will open new opportunities to experimentally study the photodisintegration reactions of astrophysics interest. Considering both the important reactions identified by the nucleosynthesis studies and the purpose of complementing the experimental results for the reactions involving p-nuclei, the measurements of six (γ,p) and eight (γ,α) reactions based on the γ-beam facility and the Extreme Light Infrastructure Silicon Strip Array (ELISSA) for the charged particles detection at ELI-NP are proposed. Furthermore, the GEANT4 simulations on these (γ,p) and (γ,α) reactions are performed using the calculated cross sections and the features of the γ-beam facility and the ELISSA detector at ELI-NP. Simultaneously satisfying the minimum detectable limit of the experimental yield and the particle identification of proton and α particle, the minimum required energies of the γ-beam to measure the six (γ,p) and eight (γ,α) reactions are estimated. It is shown that the direct measurements of these photonuclear reactions based on the γ-beam facility at ELI-NP within the Gamow windows at the typical temperature of T9=2.5 for p-process are fairly feasible and promising. We believe that this pivotal work will guide the future photodisintegration experiments at ELI-NP. Furthermore, the expected experimental results will be used to constrain the OMPs of the charged particles, which can eventually reduce the uncertainties of the reaction rates for the p-process nucleosynthesis.

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Characterization of X3 Silicon Detectors for the ELISSA Array at ELI-NP

Cited by 2 publications

References 3 publications

A Geant4-based Monte Carlo Tool for Nuclear Astrophysics

A Geant4-based Monte Carlo Tool for Nuclear Astrophysics

Determination of the photodisintegration reaction rates involving charged particles: Systematic calculations and proposed measurements based on the facility for Extreme Light Infrastructure–Nuclear Physics

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