The Sciences

Collisions!!!

Cosmic VarianceBy JoAnne HewettNov 23, 2009 5:26 PM

Newsletter

Sign up for our email newsletter for the latest science news
 

We've been waiting decades for this and here it is - first collisions at the LHC! WooHoo! The ATLAS detector saw the first collision this afternoon, followed soon by CMS. The machine was then tuned to give the LHCb and ALICE detectors collisions this evening, so all 4 experiments have had a taste of the fruit. The machine energy is set to the injection energy, 450 GeV per beam, which is a very safe way to start. They expect to ramp up to 1.2 TeV per beam to achieve the world's highest energy collisions just before Christmas. Here is the event display for the first collision in CMS:

Looks like 2 hard jets. A running commentary of the day's events at CMS can be found here. Let the science begin!

1 free article left
Want More? Get unlimited access for as low as $1.99/month
Already a subscriber? Log In or Register
1 free articleSubscribe
Want unlimited access?

Subscribe today and save 70%

Subscribe

Already a subscriber? Log In or Register
More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2021 Kalmbach Media Co.