Cockroft-Walton generator at Fermilab

Cockroft-Walton generator at Fermilab

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Credit: FERMI NATIONAL ACCELERATOR LABORATORY/ SCIENCE PHOTO LIBRARY

Caption: The Cockroft-Walton generator at the Fermi Nation- al Accelerator Laboratory, near Chicago, is the first stage in the acceleration of protons which eventually reach an energy of 1000 GeV in Fermilab's big Tevatron accelerator. Electrons are added to hydrogen atoms in the cube-shaped structure. The resulting negative ions are accelerated to 750 keV in the pipe at top left before being passed to the next stage. The dome-topped structure contains the 'Cockroft ladder' which builds up a high direct voltage (750 kv) from the alternating mains supply. The dark columns are supports with 'corona rings' to help to prevent unwanted discharges.

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Keywords: accelerator, chicago, cockcroft-walton generator, fermi national, fermilab, nuclear research, particle physics laboratory, us, usa

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