Sprecher
Beschreibung
The Facility for Antiproton and Ion Research (FAIR) is currently under construction and will start operations with first nuclear physics experiments in 2027. FAIR will offer unique high-intensity heavy ion beams and proton beams that will also be used by the HED@FAIR collaboration for warm dense matter (WDM) experiments. Three main experimental setups will be used by HED@FAIR for experiments: Isochoric heating and expansion (HIHEX), laboratory planetary science (LAPLAS) and proton microscopy (PRIOR).
HIHEX and LAPLAS will be used for equation of state studies of WDM. In the case of HIHEX, $\text{mm}^{3}$-sized samples will be heated with heavy ion beams to eV temperatures, making it possible to study the properties of WDM near the critical point and phase boundaries. In the case of LAPLAS, heavy ion beams will be used to isentropically compress samples to Mbar pressures at sub-eV temperatures, conditions which are typical for many planetary interiors. In the case of PRIOR, high energy protons are used for imaging samples generated with secondary drivers, for example to study shock wave dynamics.
The HED@FAIR experiments will take place at a dedicated beamline in the APPA cave. The beamline setup is flexible and can be used with heavy ions ($\text{U}^{28+}$, up to 2.7 GeV/u, $5\cdot 10^{11}$ ions, 50 ns bunch) for the HIHEX, LAPLAS experiments and with protons (up to 10 GeV, $2.5\cdot 10^{13}$ protons/bunch) for PRIOR experiments.
A diagnostic laser will be used to drive x-ray diagnostics.We are also investigating the possibility to install a high-power laser facility next to the APPA cave, which would not only drive the x-ray diagnostics for HIHEX and LAPLAS, but could also be used for fusion science experiments, for example to study laser-plasma instabilities. Until the APPA cave becomes available, HED@FAIR experiments are being carried out at the existing GSI facilities at reduced beam intensities with beams from the SIS-18 synchrotron and the PHELIX laser.
