Speaker
Description
The ISOLDE facility at CERN is one of the most versatile and prolific facilities worldwide for the production of exotic isotopes using the Isotope Separation On-Line (ISOL) method. The HIE-ISOLDE project has realized a cutting-edge superconducting post-accelerator capable of delivering radioactive ion beams with energies up to 10 MeV/u, making ISOLDE a unique facility worldwide to accelerate medium and heavy isotopes within this energy range.
To exploit the vast possibilities offered for research in nuclear structure, nuclear astrophysics and other fields, the HIE-ISOLDE Timing Array for Reaction Studies (HISTARS) project aims at building a detection device for the measurement of lifetimes of excited states populated in reactions. Nuclear excited-state lifetimes are essential to have direct access to electromagnetic transition rates, which are sensitive to the details of nuclear wavefunctions.
HISTARS combines a charged particle inner detector system with enhanced capabilities for reaction tagging with excellent timing response and an external gamma fast-timing array based on LaBr$_3$(Ce) detectors. The system aims to benefit from recent advancements in instrumentation and electronics, utilizing improvements in digital signal processing and innovative analysis techniques based on genetic algorithms. The project will expand research opportunities for the large community of accelerated beam users at ISOLDE.
The presentation will address the HISTARS conceptual design, the technical design study including Monte Carlo simulations, and the performance evaluation of fast-scintillator systems for gamma rays and charged particles. Test physics cases to showcase the potential of the instrument will be also introduced.
| Classification | Instrumentation for radioactive ion beam experiments |
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