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ALICE with one door open

Curiouser and curiouser: a riddle at the ALICE detector

12/09/25
Sarah Charley

In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC wraps up its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.

05/01/06

Science meets architecture

A step away from the cars scuttling down the streets of Delhi, precisely arranged on a tame green lawn, is what looks like a giant's playground. Twin cylinders squat at the far end. A pole stands at the center of each, matching the windowed cylinders' radii and heights.

Logbook of April 2006
04/01/06

Tevatron record

The Tevatron accelerator at Fermilab set a world record on Sunday afternoon, July 3, 1983, achieving a beam energy of 512 billion electronvolts (GeV). Accelerator operators had made the first-ever attempt at accelerating a beam in the Tevatron at 3:12 a.m. that day, reaching 250 GeV.

04/01/06

PEP-II interaction region

The Stanford Linear Accelerator pumps large amounts of energy into beams of electrons and positrons, sending them into the PEP-II storage ring where the particles can collide, revealing the secrets of fundamental particle processes.

04/01/06

Aerial photos of SLAC

Most people like to keep their hobbies and work separate. But not Steve Williams.

Illustration of light sources
04/01/06

Light sources

Light sources are accelerator-based machines used for research in fields from physics and chemistry to medicine and forensics.

04/01/06

Old giant hangs on

In biology, there is a loose rule of thumb that says the bigger an organism, the longer its life will be. If Fermilab's "Jolly Green Giant" is any indication, the rule may also apply to equipment in high-energy physics.

04/01/06

Forget Albert

Quick, give an example of a first name of a physicist. Albert? Benjamin? Sure, Albert Einstein and Benjamin Franklin are famous examples. But their first names are rather unusual.

04/01/06

Engineering feats

Sometimes it takes the most impressive equipment in the world to find the smallest, most easily overlooked particles in the universe. Fermilab's Neutrinos at the Main Injector (NuMI) project is a perfect example.

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