Current Research Activities
HISPEC/DESPEC (HIgh-resolution in-flight and DEcay SPECtroscopy)
The HISPEC/DESPEC experiments, which are part of the NUSTAR scientific pillar, are intended to address questions in nuclear structure, reactions and nuclear astrophysics by means of high-resolution in-flight spectroscopy (HISPEC) and stopped-beam experiments (DESPEC) at the GSI FRagment Separator (FRS) in FAIR Phase-0 and the future FAIR Super-FRS facility. More information on the HISPEC/DESPEC collaboration and experiments can be found here.
The core device of HISPEC experiments is the AGATA array, a large-array gamma-ray spectrometer based on state-of-the-art HPGe technology with tracking capabilities, complemented by ancillary detector systems such as HYDE for charged-particle detection or a plunger device to measure nuclear lifetimes around a secondary target. An event-by-event identification of outgoing ions will be provided by time-of-flight, energy-loss and total energy (LYCCA) measurements and/or a magnetic spectrometer.
The Advanced Implantation Detector Array (AIDA) lies at the heart of DESPEC setup to measure implanted exotic ions and subsequent particle decays, in conjunction with a suite comprising various detector technologies including the DESPEC Ge Array Spectrometer (DEGAS), the FAst TIMing Array of LaBr3 modules (FATIMA), fast plastic scintillator detectors (bPlast), the Decay Total Absorption gamma-ray Spectrometer (DTAS) or neutron detectors such as the BEta-deLayEd Neutron detector (BELEN) or the MOdular Neutron SpectromeTER (MONSTER).
More information on HISPEC and DESPEC Instrumentation can be found here: HISPEC and DESPEC.
The beamtime schedules for FAIR Phase-0 can be found here.
Previous Experimental Campaigns
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PreSpec
PreSpec - a collaborative international project - was tailored for basic nuclear structure studies of exotic nuclei far from the line of stability by means of high-resolution gamma-ray spectroscopy of radioactive ion beams produced by fragmentation or fission at relativistic energies at the SIS / FRS facility of GSI. It built upon the very successful RISING project and aimed at the preparation for the spectroscopy to be carried out with HISPEC/DESPEC at NUSTAR for FAIR. In 2012, AGATA detectors were installed at the SIS / FRS facility as a part of PreSPEC project. This significantly improved the detection capabilities for both in-beam and decay experiments with rare isotope beams, and enabled a rich physics program at SIS / FRS before the implementation of HISPEC/DESPEC. More information can be found here.
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Rare Isotope Spectroscopic Investigation at GSI (RISING)
During this campaign the Cluster detectors of EUROBALL were installed at GSI to perform three types of experiment.
- In-beam γ-ray spectroscopy at relativistic energies above 100 MeV/nucleon.
- g-factor measurements of isomeric stopped beams.
- Isomer and β-delayed γ-ray spectroscopy of stopped beams.
More information can be found here.