Abstract
Hybrid recoil mass analyzer (HYRA) is a unique, dual-mode spectrometer
designed to carry out nuclear reaction and structure studies in heavy and medium-mass
nuclei using gas-filled and vacuum modes, respectively and has the potential to address
newer domains in nuclear physics accessible using high energy, heavy-ion beams from
superconducting LINAC accelerator (being commissioned) and ECR-based high current
injector system (planned) at IUAC. The first stage of HYRA is operational and initial
experiments have been carried out using gas-filled mode for the detection of heavy evaporation
residues and heavy quasielastic recoils in the direction of primary beam. Excellent
primary beam rejection and transmission efficiency (comparable with other gas-filled separators)
have been achieved using a smaller focal plane detection system. There are plans
to couple HYRA to other detector arrays such as Indian national gamma array (INGA)
and 4π spin spectrometer for ER tagged spectroscopic/spin distribution studies and for
focal plane decay measurements.