Speaker
Description
The ISOLDE Solenoidal Spectrometer (ISS) at CERN was commissioned fully in 2021, following the second long shutdown at CERN, to take advantage of the exotic beams delivered from the HIE-ISOLDE facility at energies up to 10 MeV/u. It is designed to study direct reactions based on the solenoidal spectrometer concept developed in the HELIOS spectrometer at Argonne National Laboratory [1,2]. The on-axis position-sensitive silicon array at the heart of the spectrometer was constructed at the University of Liverpool and uses 24 DSSSD wafers arranged into a hexagonal structure. The readout of 1800 individual detector channels is performed with the use of on-board ASICs. It is coupled to a series of ancillary systems for recoil detection, beam diagnostics and monitoring.
This talk will present a technical overview of the setup followed by a selection of physics experiments from the past 4 successful years as we enter the third long shutdown at CERN and a hiatus from radioactive beams. New developments, such as those to study fission, are also being presented elsewhere in this workshop. Finally, I will summarise future ideas under consideration for the return of ISS in 2028 and welcome further discussion for new possibilities.
[1] A. H. Wuosmaa et al. Nucl. Instrum. Methods Phys. Res., Sect. A 580, 1290 (2007).
[2] J. C. Lighthall et al. Nucl. Instrum. Methods Phys. Res., Sect. A 622, 97 (2010).
