A 50-foot wide, doughnut-shaped electromagnet recently completed a journey from New York to Illinois. It went most of the way by barge — down the Eastern seaboard and then up the Mississippi River before hitting the road for the last 26 miles, shutting down multiple lanes as it crept along over the course of three nights. Livescience has pictures from this incredible journey. Read the rest
For more than 20 years, the Tevatron reigned as the gold standard in particle accelerators. Under a berm outside Batavia, Illinois, the machine pushed protons and antiprotons to high energies around circular tracks before crashing them into each other. What's the point of that? When high-energy protons and antiprotons collide, they reproduce the conditions at the beginning of the Universe, just after the Big Bang. In the wreckage, you can find particles that don't normally exist, and observe phenomena that humans have never seen before. By rubbernecking at a particle crash, researchers hope to better understand life, the Universe, and everything. It's kind of a big deal.
But on Friday, September 30, the Tevatron smashed its last protons.
Ultimately, the Tevatron was simply the victim of the progress of technology. When it opened in 1983, it replaced older, lower-energy accelerators. And, in turn, the Tevatron has been replaced by the Large Hadron Collider, an accelerator capable of pushing particles to even higher energies. Once that happened, it was only a matter of time before the Tevatron felt the budgetary axe.
The end of the Tevatron doesn't mean the end of research at the Fermi National Accelerator Laboratory, and it doesn't mean the end of particle research in the United States. But it is the end of an era.
William S. Higgins is a radiation safety physicist at Fermilab, and a contributor to Tor.com. He helped build the Tevatron and he was on hand last Friday, recording his thoughts and some photos to share with us. Read the rest