Background: In order to accurately measure the neutron spectrum using time-of-flight method

a nanosecond pulse neutron generator is introduced from Efremov Institute of Electric Physics

Russia. Purpose: The nanosecond pulse ion beam current is generated by a bunching system. Some key equipments (nanosecond pulse signal source

high frequency bunching power supply

adjustment system of the negative feedback

etc.) are developed by ourselves for the localization of the components. Methods: The problem of high bunching power supply voltage is solved with bidirectional scanning technology. The negative feedback technology makes the nanosecond pulse bunching system of long-term stability. In order to measure the nanosecond pulse beam

a fast pulse Faraday cup measurement device is developed. Results: The Full Width at Half Maximum (FWHM) of the neutron generator ion beam pulse is 1.5 ns

and the pulse repetition frequency-range is 1 kHz?4 MHz

beam spot diameter is about 10 mm. Conclusion: Because the Electron Cyclotron Resonance (ECR) ion source is used in neutron generator

it has a number of advantages

such as small emittance

small energy divergency

no filament and long-time continuous working stability

which is a good experimental device for neutron physical research. Abstract