Direct reactions and spectroscopy with hydrogen targets: past 10 years at the RIBF and future prospects

Session

Development of new detection devices

2 Aug 2023, 15:45

Hilton York Hotel

69. Methodologies for Direct Reaction Studies with RI-beams ~ Present and Future ~

T. Uesaka

02/08/2023, 15:45

63. NEBULA-Plus: the Upgrade of the NEBULA Fast Neutron Array

Nigel Orr (LPC-Caen (CNRS/IN2P3))

02/08/2023, 16:15

Invited talk

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 ...

87. Development of the STRASSE system for quasi free scattering measurements at the RIBF

Dr Hongna Liu (Beijing Normal Univerisity)

04/08/2023, 09:00

Invited talk

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...

2. CsI(Na) array CATANA to measure protons and gamma-rays

Yasuhiro Togano (RIKEN Nishina Center)

04/08/2023, 09:30

Invited talk

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...

15. Development of the High-Resolution Neutron Detector HIME

Marco Knösel (Technische Universität Darmstadt, Fachbereich Physik, Darmstadt, Germany)

04/08/2023, 09:55

Invited talk

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...

71. Recent upgrades of R3B detectors for the experiments with LH2 target

V. Panin

04/08/2023, 10:50

13. New telescope for cluster-knockout reaction and cluster formation in neutron rich Ca isotopes

Ryotaro Tsuji (Kyoto university / Riken, Nishina Center)

04/08/2023, 11:20

Invited talk

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...

14. Future Programs at RIBF OEDO/SHARAQ: Utilizing Low Energy Heavy Ion Beams and Liq H2 Targets

Rin Yokoyama (Center for Nuclear Study, the University of Tokyo)

04/08/2023, 11:45

Invited talk

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...

76. A New Scintillator-Based Gamma-Ray Spectrometer for the RIBF

Pieter Doornenbal (RIKEN)

04/08/2023, 13:40

Invited talk

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,...

72. γ RIBF-UK: Scintillator-based high-resolution γ-ray spectrometer at RIBF

M. Petri

04/08/2023, 14:10

74. TBD

P. Doornenbal

70. TBD

H. Liu

73. TBD