A Digital data acquisition system for PRIN- A Facility for neutron production using Accelerator.

Abstract

International audienceAll most all the nuclear physics experiments involves ion beam (projectile) of different species and energies. The intensity of the beam, the beam energy, the beam uniformity & divergence including stability of the ion beam is of fundamental importance for any Accelerator. In addition with ion beam the study of neutrons are demanding subject now days. There are lack of reliable nuclear data [1], especially around 5 to 14 MeV range and still it is an open field of study. The neutron cross-section data at these high energies are very much important for fusion reactor development. More over there is a need for calibrated neutron (n) detectors to be used for reliable cross-section measurements. In addition to the above the dark matter group wants to investigate the experimental study using recoil range analysis method in liquid Ar/Xe where they need more precise neutron energy and crosssection. Now days the imaging (neutron imaging) is another emerging field for non-destructive study of many thing starting from industrial to defences research where the high energy neutron cross section are very much important. All the above requirement lead to the development of a dedicated neutron source and dedicated fast data acquisition system which can able to do quick analysis at the site for better understanding. Keeping all the things on mind a dedicated beam line for n production has been developed which uses a two body D(d, n)3He reaction to produce mono energetic neutron [2] of desired energies at 3.3MV Tandem Accelerator (TTT-3) at Department of Physics, University of Naples Federico II [3]. The neutron beam line including specially designed chamber for neutron Production has been shown in Fig.1. There are many other reactions are available to produce neutron whereas D(d, n)3He reaction has some better advantage which will be presented and discussed. To support the above experimental facility a dedicated digital data acquisition system have been installed and new algorithm using ROOT has been developed for the analysis purpos