Hybrid recoil mass analyzer at IUAC — First results using gas-filled mode and future plans

• DOI: 10.1007/s12043-010-0119-3
• Publication Date: 2010-10-02T04:19:40Z
• Authors: N. Madhavan; S. Nath; T. Varughese; J. Gehlot; A. Jhingan; P. Sugathan; A. K. Sinha; R. Singh; K. M. Varier; M. C. Radhakrishna; E. Prasad; S. Kalkal; G. Mohanto; J. J. Das; Rakesh Kumar; R. P. Singh; S. Muralithar; R. K. Bhowmik; A. Roy; Rajesh Kumar; S. K. Suman; A. Mandal; T. S. Datta; J. Chacko; A. Choudhury; U. G. Naik; A. J. Malyadri; M. Archunan; J. Zacharias; S. Rao; Mukesh Kumar; P. Barua; E. T. Subramanian; K. Rani; B. P. Ajith Kumar; K. S. Golda
• Keywords: Recoil

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.