This presentation will briefly describe the NEBULA-Plus array, which is intended to complement the existing two-wall NEBULA fast neutron array of SAMURAI. After introducing the motivations for constructing NEBULA-Plus and the expected performances, the details of the setup and the installation and testing of the array will be presented. We will conclude with a few remarks on some of the ...
STRASSE (Silicon Tracker for RAdioactive nuclei Studies at SAMURAI Experiments) is a new detection system under construction for quasi-free scattering (QFS) measurements at 200-250 MeV/nucleon at the RIBF facility of the RIKEN Nishina Center. It consists of a charged-particle silicon tracker coupled with a dedicated thick liquid hydrogen target (up to 150-mm long) in a compact geometry to fit...
The CsI(Na) scintillator array CATANA has been enhanced as a dual-gain system with the capability to simultaneously measure proton and gamma-ray energies.
The simultaneous measurement of excitation energy of populated states and resultant de-excitation gamma-rays gives us an unique opportunity to investigate the detailed nuclear structures. To realize the simultaneous measurement for the...
High-resolution neutron detection plays a key role in spectroscopic measurements, in particular since in the past decades, the research focus shifted towards extremely neutron-rich nuclei. A prototype of a high-resolution neutron detector, called HIME, has been constructed at SAMURAI with an active area of $40 \times 40 \, \mathrm{cm}^{2}$ for precise measurements of two-neutron correlations...
The Structure of nuclear and nuclear matter is explained as shell structure based on mean field theory. However new picture that the light cluster such as $d$, $t$, $^3\mathrm{He}$ and $^4\mathrm{He}$ form spontaneously in the low-density region (~1/10 of saturation density) is predicted . This phenomenon can be a clue to search mechanism which stabilizes nuclear via cluster formation and...
This talk will outline future experimental programs planned at RIBF OEDO/SHARAQ. The unique capabilities of energy-degraded heavy ion beams at OEDO enable the execution of experiments involving reactions previously unachievable due to the beam energy constraints of RIBF. For instance, in-beam gamma-ray spectroscopy using fusion reactions has proven to be an invaluable tool for studying high...
Since advent of the RIBF, the NaI(Tl) based scintillation array DALI2+ has been the workhorse for in-beam gamma-ray spectroscopy experiments, now counting 100 peer-reviewed publications (2 Nature, 28 PRL, 23 PLB). Due to its modest energy resolution, caused by large opening angles and intrinsic energy resolution of NaI(Tl) scintillators, long absorption lengths of the scintillation material,...
