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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.

02/01/06

Battle of the boxes

Last October, the front of the SLAC computing center looked like an elaborate children's war game in progress. Ad hoc piles of polystyrene, plastic, wooden pallets, and cardboard created an image of bunkers and trenches in a plastic post-industrial landscape.

02/01/06

Luminosity

Luminosity is a measure of how many particles are brought together in a certain space over a certain period of time.

02/01/06

Julian Voss-Andreae: In three dimensions

Unveiling the three-dimensional structure of proteins thrills scientists. While the potential for understanding the folding and function of enzymes is truly exciting by itself, exploring macromolecule structures also satisfies a more fundamental urge: to see the invisible.

02/01/06

Ways to know you have won the Nobel Prize

Hosting the "Late Show with Leon," Nobel laureate Leon Lederman shared with high school students his top fourteen ways to know you have won the Nobel Prize:

02/01/06

Terry Mart: Counting papers

Citation numbers and the Impact Factor of journals are often used to evaluate the quality and the importance of research. Both quantities have some shortcomings, and people using these indicators should know when and when not to use them.

02/01/06

Collimation

In high-energy collisions, luminosity, or beam brightness, isn't the only thing to consider; low background noise at the detectors is also important. When wayward particles bounce around inside detectors, they can mimic real collisions, muddy results, and even damage parts of the collider.

02/01/06

Hitting the broad side of a (classified) barn

The distinctive and amusing term "barn" originated with two Purdue University physicists working on the Manhattan Project in 1942—and it was classified information by the US government until after World War II.

02/01/06

One big step for safety

It looks like a simple silver trailer, but it's more like a shoe store on wheels. Mike Sitarz pulls his metal trailer, better known among Fermilab employees as the "shoemobile," behind the Technical Division industrial buildings at 8 a.m. every Tuesday.

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