A 14 MeV neutron generator described in this paper.Neutrons are produced in D-T, D-D,T-T reactions. The production of 14 MeV neutrons from DD neutrons generator resulting from tritium build up from d(d,p)t reaction in the target under 30mA, 300 KeV deuteron beam, bombarding a water-cooled, rotating target, size of beam spot on target is 1.8 cm is obtained. An estimate of the capital cost 14 MeV...

The introduction of a longitudinal polarised positron beam in an ee linear collider calls for its polarisation monitoring and measurement at low energies near its production location. Here it is shown that a relatively simple Bhabha scattering polarimeter allows, at energies below 5000 MeV, a more than adequate positron beam longitudinal polarisation measurement by using only the final state el...

The Rhone-Alpes hadrontherapy facility project ETOILE is based on production of up to 400 MeV/amu carbon and 220 MeV proton beams using earlier CERN synchrotron design ”PIMMS”. The accelerator complex has necessitated several design studies relevant to the technical specificities of ETOILE, in support to cost evaluations. These studies are described and concern the optics of the low, medium and...

Using covariance analysis, we quantify the correlations between the interaction parameters in a transport model and the experimental observables commonly used to extract information of the Equation of State of Asymmetric Nuclear Matter. Using the simulations of Sn+Sn, Sn+Sn and Sn+Sn reactions at beam energies of 50 and 120 MeV per nucleon, we have identified that the nucleon effective masses s...

We report the generation of MeV x rays using an undulator and accelerator that are both driven by the same 100-terawatt laser system. The laser pulse driving the accelerator and the scattering laser pulse are independently optimized to generate a high energy electron beam (>200  MeV) and maximize the output x-ray brightness. The total x-ray photon number was measured to be ∼1×10(7), the source ...

A bstract In this work, we discuss the possibility to test Heavy Neutral Leptons (HNLs) using “Cosmic Ray Beam Dump” experiments. analogy with terrestrial beam dump experiments, where a first hits target and is then absorbed by shield, consider high-energy incident cosmic rays impinging on Earth’s atmosphere surface. We focus here HNL production from atmospherically produced kaon, pion D -meson...

We report on an experimental demonstration of electron cooling of high-energy antiprotons circulating in a storage ring. In our experiments, electron cooling, a well-established method at low energies (<500 MeV/nucleon), was carried out in a new region of beam parameters, requiring a multi-MeV dc electron beam and an unusual beam transport line. In this Letter, we present the results of the lon...

Computer code calculations based on biophysical models are commonly used to evaluate the effectiveness of shielding in reducing the biological damage caused by cosmic radiation in space flights. Biological measurements are urgently needed to benchmark the codes. We have measured the induction of chromosomal aberrations in human peripheral blood lymphocytes exposed in vitro to 56Fe-ion beams acc...

The ability of semi-classical transport models to correctly simulate Pauli blocking and Bose enhancement is discussed. In the context of simple quantum mechanical systems, it is shown that using (1 ± f) enhancements is inadequate to describe systems far from equilibrium. The relaxation of (1 + f) descriptions toward equilibrium is studied both in the context of simple models, including a hot pi...

Spallation neutron sources, though very effective in neutron production, are large, expensive and presently would involve certain difficulties in their operation (e.g., beam trips). Contrary, an electron driver, although much less effective in neutron production, is rather cheap and compact machine that, at the same time, might bring advantages in terms of reliability. Here we investigate the u...