Prototype Test of Energy Doubler/Saver Bending Magnet

An improved full scale bending magnet (E22-13) for the Energy Doubler was cooled down with a prototype satellite refrigerator and its characteristics were measured. We intentionally induced quenches on this magnet below 40 kG using a heater and the quench behavior was investigated from the viewpoint of system safety. The first self-induced quench of this horizontal magnet system occurred at about 41.7 kG. Due to high single phase pressure, we did not train the magnet to any higher field. The measurement of ac loss was done and the data showed some wire movement at about 20 kG. Transfer function was measured to be 9.81 (G/A). The magnetic field was measured using a harmonic coil. The field quality was found to be improved over the first full scale magnet (E22-1).