Rapid measurements of two dimensional ion beam current distribution for pulsed neutron source

To monitor maximum current density and two-dimensional ion beam current distribution at the entrance of intense pulsed neutron source of INR the secondary electron monitor is considered. A new means is realized in this device. Two-dimensional primary beam current distribution is transformed into the corresponding distribution of secondary electrons. The electron distribution is transferred from the ion beam area, registered in discrete points and finally approximated. By means of the monitor one can detect with a high precision the current distribution practically within entire ion pipe during a time period that is not more than 10 ms