Nanosecond neutron source of thermonuclear neutrons (Plasma-focus type) NSNS-2

Technical data

Neutron energy: 2.45 MeV from the deuterium-deuterium reaction in plasma
Neutron burst I: duration: from 10 to 20 ns
repetition: ≥ 60 s
neutron yield during the burst ≥ 106 n/shot
Neutron burst II: duration: from 50 to 100 ns
repetition: ≥ 600 s
neutron yield during the burst ≥ 109 n/shot
Plasma imaging system: registration range: 8 eV – 6.2 keV
image registration: 4 frames
frame recording time: < 1.2 ns
time between frames: 0 to 20 ns
imaging plane: (y, z)
spatial resolution: ~230 mm


Pulsed nanosecond sources of thermonuclear neutrons are used for elaboration of methods of detection of neutron fields (space, energy and time distributions of neutron fluxes) mostly for the UE EUROfusion programme and also for nuclear geophysics and nuclear medicine (radiation dosimetry). Nanosecond neutron pulses enable measurement of energy spectra of fast neutrons by the time-of- flight (TOF) method on a short base (a few meters). This will be helpful for development of new methods of measurements of neutron spectra at thermonuclear facilities (e.g. stellarator W-7X in Greifswald, Germany) and neutron methods for detection of hidden illicit materials (e.g. explosives). The four-frame plasma imaging system i.a. allows determining of the pinch radius and its evolution over time, which is a very important element of research into the phenomenon of plasma radiation compression.

Department in which the equipment is in use

Department of Radiation Transport Physics (NZ61)