Abstract
Self Powered Neutron Detectors with High Energy Sensitivity
Highlights
DONES is based on the acceleration of a deuteron beam up to 40 MeV, 125 mA current in continuous wave mode, with 5 MW beam average power
SPNDs are electronic devices that exploit the neutroninduced activation of specific materials, which decay through electron emission: in an SPND, the activated material acts as a first electrode called emitter
A second electrode placed at close distance from the emitter catches the beta electrons. These two electrodes, connected in a circuit, act as a current generator whose current is proportional to the emitter activation, which is in turn proportional to the incoming neutron flux (Fig.1)
Summary
DONES is based on the acceleration of a deuteron beam up to 40 MeV, 125 mA current in continuous wave mode, with 5 MW beam average power. A full MCNP simulation of the interaction between the beam and the target was made, considering the maximum repetition rate of 800 Hz. The resulting expected neutron flux is 6×1010 n/cm2s both with the lead and PE support, but with a different energy distribution due to the moderating effect of polyethylene.
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