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- W2187158513 abstract "ISIS, situated at the Rutherford Appleton Laboratory (RAL) is the world’s most powerful pulsed neutron source. At the heart of the ISIS accelerator is a proton synchrotron which uses a ring of magnets connected in series and configured as a “White Circuit” [1]. The magnets are connected in series with capacitor banks so that they form a resonant circuit with a fundamental frequency of 50 Hz. The circuit allows the magnets to be fed with an AC current superimposed on a DC current. The AC is currently provided by a 1MVA MotorAlternator set and it is now proposed to replace this by a solid state UPS (Uninterruptible Power Supply) system. Tests on a smaller 80kVA unit have shown that it is possible to control the magnet current with a modified UPS system in such a way that both the frequency, phase and output voltage are under the direct influence of the control system. This paper discusses the issues surrounding the upgrading of the AC supply to the main magnets with a view to improving the system reliability, improving magnet current stability and reducing the risk of mains failure." @default.
- W2187158513 created "2016-06-24" @default.
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- W2187158513 date "2004-01-01" @default.
- W2187158513 modified "2023-09-27" @default.
- W2187158513 title "UPGRADE OF THE ISIS MAIN MAGNET POWER SUPPLY" @default.
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- W2187158513 hasPublicationYear "2004" @default.
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