Speaker
Description
The Nuclear Data Production System (NDPS) is an experimental system for measuring nuclear data by use of neutron Time-of-Flight detection systems built at Daejeon, Korea. The RAON (Rare isotope Accelerator complex for ON-line experiment) provides deuterons and protons up to 98 MeV and 83 MeV, respectively. They are accelerated by a superconducting driver LINAC and are delivered to the neutron production target to produce neutrons. Pulsed beams with intensities up to ~12 μA can be used to do experiments for measuring neutron-induced cross sections. The range of the beam repetition rate is to be 1 kHz ~ 500 kHz while the RF frequency of the LINAC is 81.25 MHz. The pulse width of the beams is an important factor in determining the accuracy of nuclear data and is aimed to be as small as 1~2 ns. Both white neutrons and monoenergetic neutrons will be produced. White neutrons will be generated by thick C (graphite) targets, while thin Li targets will produce monoenergetic neutrons. Beam lines for charged particles and neutrons together with a neutron collimator and beam dumps are constructed. Nuclear data such as (n, fission), (n, xn), and (n,γ) cross sections can be measured with various detectors. Neutron detectors based on MICROMEGAS and PPAC with converters are installed for monitoring neutron flux. The current status of the construction of the NDPS will be presented.