Neutron spectra

Waterman, Frank M.; Kuchnir, Franca T.; Skaggs, Lester S.; Kouzes, Richard T.; Moore, W.H.

doi:10.1118/1.594529

Cited by 11 publications

(30 citation statements)

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“…Differential neutron yields for several angles and various beam energies were measured in References [22]- [28]. New measurements of the neutron yield produced by a 62 MeV proton beam on a thick beryllium target were performed at Laboratori Nazionali del Sud (LNS) of INFN using the existing superconducting cyclotron [29].…”

Section: Validation Studiesmentioning

confidence: 99%

“…The comparison of the simulation with the experimental data taken from this experiment and also from Refs. [22], [23], and [24] at 0 • for lower beam energies shows a significant disagreement in the lower neutron energy range. This disagreement demonstrates lower beam energy data cannot be extrapolated to higher beam energies simply by an overall factor since the kinematic limits have to be taken into account.…”

Section: Validation Studiesmentioning

confidence: 99%

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Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Bungau

Alonso

Bartoszek³

et al. 2019

J. Inst.

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The IsoDAR sterile-neutrino search requires a very high intensity neutrino source. For IsoDAR, this high intensity is produced using the high neutron flux from a 60 MeV, 10 mA proton beam striking a beryllium target that floods a sleeve of highly-enriched Li-7. Through neutron capture the Li-7 is transmuted to Li-8, which beta-decays giving the desired high neutrino flux for very-short baseline neutrino experiments. The target can be placed very close to can existing large neutrino detector, which is typically located deep underground to reduce backgrounds. With such a setup, it is necessary to design a shielding enclosure for the target to prevent neutrons from causing unacceptable activation of the rock walls close to the target. Various materials have been studied including steel to thermalize the high energy neutrons and two new types of concrete developed by Jefferson Laboratory, one very light with shredded plastic aggregate, and the other one enriched with high quantities of boron. The shielding is asymmetrical, having a larger thickness towards the detector in order to suppress the neutron and gamma background in the neutrino detector. Simulation results for rock activation and for detector backgrounds are presented.

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Section: Validation Studiesmentioning

confidence: 99%

Section: Validation Studiesmentioning

confidence: 99%

Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Bungau

Alonso

Bartoszek³

et al. 2019

J. Inst.

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“…The energy and angular distributions of the measured neutron yield are shown in Figure 2. The neutron yield measured by the 3 He tube integrated over the neutron energy from zero to 0.5 MeV is compared to the liquid scintillator data in Fig. 3, left panel.…”

Section: Data Reduction and Resultsmentioning

confidence: 99%

“…Several neutron yield measurements have been carried out in the past at proton energies close to the one of the present project [2][3][4][5], but they are rather incomplete both in angle and in neutron energy range. So a dedicated and more detailed neutron production measurement was necessary.…”

Section: Introductionmentioning

confidence: 99%

Complete determination of neutron yield from 62 MeV protons on⁹Be for the design of a low – power ADS

Schillaci

Osipenko

Ripani

et al. 2014

EPJ Web of Conferences

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Abstract. Within the European Partitioning & Transmutation research programs, infrastructures specifically dedicated to the study of fundamental reactor physics of future fast neutron-based reactors are very important. In this respect, an Accelerator Driven System low-power prototype, based on a 70 MeV proton beam impinging on a thick Beryllium converter, was recently proposed and designed within the INFN-E project. The world data on neutron yield from Be target are scarce in this proton energy range. This lack of data calls for a dedicated measurement which was performed at INFN Laboratori Nazionali del Sud, covering a wide angular range, from 0 to 150 degrees, and an almost complete neutron energy interval, from thermal up to the beam energy. In this contribution the results are discussed together with the description of the proposed ADS facility.

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“…An exception has been the d(48.5) + Be(48.5) 1 superconducting isocentric cyclotron at the Harper Hospital, Detroit MI [53], the small size of which has permitted installation in a hospital. Measurements of p + Be broad neutron spectra in air for proton energies greater than 35 MeV have been made most often by the pulsed-beam time-of-flight (TOF) technique [18,39,[54][55][56][57][58][59][60][61][62], but recoil spectrometry [63,64] has also been used. A method that involved the iterative fitting of water-attenuation data has also been employed to derive a spectrum [65].…”

Section: The P + 9 Be Reactionmentioning

confidence: 99%

Fast neutron and proton therapy sources

Jones¹

2001

Radiochimica Acta

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Neutrons from the reactions of protons or deuterons of energies between 35 and 70 MeV on beryllium are most suitable for therapy because of the high yield and good penetration. Lower energy sources are used for limited applications. Proton therapy is conducted mainly in two energy ranges, viz. 60-75 MeV (exclusively for the treatment of eye lesions) and ≥ 200 MeV for general applications. Characterisation of both neutron and proton therapy beams in terms of spectral fluence is important for accurate determination of dosimetry parameters, for interpreting biological effects, for intercomparison purposes and to perform accurate radiation transport calculations.

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Neutron spectra

Cited by 11 publications

References 0 publications

Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Complete determination of neutron yield from 62 MeV protons on⁹Be for the design of a low – power ADS

Fast neutron and proton therapy sources

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Neutron spectra

Cited by 11 publications

References 0 publications

Optimizing the 8Li yield for the IsoDAR Neutrino Experiment

Optimizing the 8Li yield for the IsoDAR Neutrino Experiment

Complete determination of neutron yield from 62 MeV protons on9Be for the design of a low – power ADS

Fast neutron and proton therapy sources

Contact Info

Product

Resources

About

Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Optimizing the ⁸Li yield for the IsoDAR Neutrino Experiment

Complete determination of neutron yield from 62 MeV protons on⁹Be for the design of a low – power ADS