물리colloquium

󰏟주제 : NDPS and KoBRA experiment at IRIS

󰏟발 표 요 약 :

The Institute for Rare Isotope Science (IRIS), under the Institute for Basic Science (IBS), has established key experimental facilities, including the Nuclear Data Production System (NDPS) and the Korea Broad Acceptance Recoil Spectrometer & Apparatus (KoBRA). NDPS supports neutron-based experiments such as nuclear data production, neutron imaging, and radiation shielding studies, while KoBRA facilitates low-energy nuclear physics research.

The first beam commissioning of NDPS was completed in September 2024. A $^{40}$Ar$^{+18}$ ion beam at 16.3 MeV/nucleon was transported via Superconducting LINAC 3 (SCL3) to a graphite target for neutron production.

Neutron beams were detected using activation foils and liquid scintillators, with beam energy determined by capacitive pick-up monitors. 

KoBRA, designed for nuclear reaction and astrophysics studies, has been in beam commissioning since May 2023. Stable and radioactive isotope beams from IRIS's electron cyclotron resonance ion sources and isotope separation on-line (ISOL) system were delivered at 1-40 MeV/u via SCL3.

A 16 A MeV $^{40}$Ar primary beam was transported, and secondary beams from $^{40}$Ar + $^{12}$C reactions were analyzed using energy loss ($∆E$), time-of-flight (ToF), and magnetic rigidity (B$ρ$) methods.

Additionally, $^{25}$Na beam from ISOL was transported and characterized.

This presentation provides an overview of NDPS and KoBRA, highlighting initial commissioning results and system performance.

󰏠 연 사 : 오건희 박사 (중이온가속기연구소)

󰏠 일 시 : 2025년 3월 27일(목요일) 오후 4시 30분

󰏢 장 소 : 자연대 4호관 215호(세미나실)

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