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In fact, the record-setting collider prior to the LHC, the Tevatron at Fermilab, used to make antiproton beams that would collide with protons in their accelerator, leading to incredible fundamental discoveries in the late 20th century, including the top quark.—Big Think, 22 Apr. 2026 Heavier particles like antiprotons (or calcium ions) prefer much slower megahertz (MHz) fields.—Rupendra Brahambhatt, Interesting Engineering, 11 Apr. 2026 The Baryon Antibaryon Symmetry Experiment or BASE, which focuses on antiprotons, is the one that relocated the substance.—Jacopo Prisco, CNN Money, 27 Mar. 2026 On Tuesday the physicists loaded 92 antiprotons—the antimatter version of protons—into a truck and drove them around for about an hour and a half.—Emma Gometz, Scientific American, 25 Mar. 2026 See All Example Sentences for antiproton