HIGH-VOLTAGE ACCELERATORS INTENDED TO PRODUCE CONTINUOUS AND PULSE NEUTRON FLUXES
2012
Recently, in NIIEFA a series of high-voltage accelerators intended to produce continuous and pulse neutron fluxes with a yield of 10 10 ��� 12 n/s has been designed. The facilities designed can be used for operation in the continuous, microsecond and nanosecond modes, in any combination. In the pulse microsecond mode, ion currents of up to 100 mA with pulse lengths UDQJLQJIURP���XSWR�����oVFDQEHREWDLQHGRQWDUJHW� In the nanosecond mode, the accelerator produces an ion beam current of up to 5 mA with a pulse length in the range of 2-30 ns. Over the last years the interest towards pulse neutron generators is growing due to continuation of research in the field of nuclear physics using time-of-flight methods. One more reason of such interest is that the development of high-effective systems for the detection of fissionable substances, explosives, drugs and poisons is a currently central issue. R & D works have been carried out in NIIEFA to design and build neutron generators, which produce neutron fluxes of high-intensity in the continuous operating mode and, in addition, will be capable of producing neutron fluxes in a wide range of the pulse repetition rate and pulse length. The NG-12-2 neutron generator (1) is a high-voltage accelerator of deuterium ions with an acceleration voltage of 300 kV and a beam current of deuterium atomic ions of up to 15 mA. The general view of the NG-12-2 neutron generator is shown in figure 1.
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