ANASEN

The Array for Nuclear Astrophysics Studies with Exotic Nuclei (ANASEN) is a charged-particle detector array currently being developed for experiments with reaccelerated radioactive ion beams at NSCL. ANASEN provides up to 10 msr solid angle coverage for charged particles. The array is based upon large area silicon-strip detectors backed with CsI. The array includes 36 Design X3 detectors from Micron Semiconductor that are nominally arranged in a barrel configuration around the beam axis in 3 rings of 12 detectors, though other configurations are possible. There is also an annular detector array that encloses one end of the X3 barrel. One of the primary uses of ANASEN is the measurement of (alpha,p) reactions in inverse kinematics. ANASEN is being designed with a gas proportional counter capability that will allow it to be used as part of an active gas target/detector. The array is being developed by Louisiana State University and Florida State University under an NSF MRI award. It is scheduled to be completed in phases, and the silicon array should be ready for the first measurements (likely proton elastic scattering) in early 2010.