Recoil detector system for the R3B setup

O.A. Kiselev, T. Aumann, W. Catford, M. Chartier, P. Egelhof, H. Emling, M. Freer, J.V. Kratz, M. Labiche,R. Lemmon, T. Nilsson, G. Nyman, G. Schrieder, H. Simon, A. Shrivastava, M Stanoiu, K. Sümmerer for the R3B Collaboration A new universal setup with high effi ciency, acceptance, and resolution for kinematically complete measurements of reactions with high-energy radioactive beams is planned to be installed at the focal plane of the high-energy branch of the Super-FRS at FAIR. The experimental confi guration is based on a concept similar to the existing LAND setup introducing substantial improvement with respect to resolution and an extended detection scheme including a detector system for light (target-like) recoil particles in coincidence with the heavy fragments, neutrons and protons. The experimental setup is aiming at utilizing a wide variety of scattering experiments. Among them are light-ion (in)elastic and quasi-free scattering in inverse kinematics. The combination of the detection of fragments in forward direction with the target-recoil detection allows for the fi rst time a kinematical complete measurement of, e.g., quasi-free nucleon knockout reactions.