Tests of a large air‐core superconducting solenoid as a nuclear‐reaction‐product spectrometer

2008 
An air‐core superconducting solenoid, with a diameter of 0.2 m and a length of 0.4 m, has been configured for use as a heavy‐ion reaction‐product spectrometer (E/A≤5 MeV/u) near θ=0° (10 to 35 msr). The performance of the spectrometer was established using α‐particle sources and nuclear‐reaction products from (18O, 18Ne), (18O, 20Ne) and (18O, 14O) and masses determined for 30Mg, 108Ru and 109Rh. A system suitable for production of radioactive beams has been constructed, and in‐beam tests are in progress at the University of Notre Dame. Large air‐core solenoids with dΩ≤20 msr and capable of focusing ions with E/A≥30 MeV/u appear feasible.
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