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Experimentally demonstrated on April 5, 2019 at LEReC at BNL, the first ever electron cooling based on electron beam RF acceleration was experimentally demonstrated. The first significant step in ensuring successful 3D non-magnetized cooling of the Au ion bunches in the RHIC cooling section was matching the electron beam energy with a relative error less than 5*10 -4 to the ion beam's energy. A dipole magnet bends the electron beam 180 degrees, according to a part of the LEReC beamline. A combination of NMR and Hall sensors has been used to establish uniform field conditions inside the magnet center area and non-uniform field regimes at the magnet ends. The measured and measured results are compared, and the calculated results are a good reference for measuring long length mapping from magnet edge to center, with measurements ranging from magnet edge to center.
Source link: https://www.osti.gov/biblio/1602462
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