Physicists give you a peek into inner sanctum

March 26, 2008 | 5:59 am

CDF detectorWhen you walk into the enormous experimental hall containing CDF, the Collider Detector at Fermilab, it looks like a child’s Erector set exploded. You can’t turn your head without staring at three stories of towering metal and wire. Nearly every color assaults you: orange, blue, silver, black, yellow, green. It’s massive. Vibrant. And looks, well, unfinished.

“The first thing that crosses my mind is, this thing can’t possibly work,” says Rob Roser, co-spokesman of the experiment, on one of a series of short videos the collaboration launched this month. “The easiest way to describe the collision hall is 20 pounds of stuff in a 10 pound bag.”

The videos and a new Web site, which hosts a glossary of physics terms and detector diagrams, offers those without PhDs a rare look at life in the United States’ largest high-energy particle physics laboratory. You get an insider’s view of cutting-edge research without the costly tuition bill.

The videos offer short glimpses into the fun. and often cramped, life of a physicist in easy-to-understand terms combined with attention-grabbing visual aids.

In video interviews, CDF physicists describe typical work days on an international collaboration, how discoveries occur and why physicists often shy away from everyday terminology in favor of more specific scientific language.

And, of course, the Web site does explain how no matter what it looks like, CDF does work, and produces data rarely seen anywhere else.

Take the virtual tour here.

Tona Kunz

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What the LHC is really for…

March 26, 2008 | 4:47 am

See this and more science humor at www.xkcd.com

Large Hadron Collider - xkcd.com style

David Harris

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Sudoku mathematics

March 26, 2008 | 4:38 am

Some of our readers will recall the fiendishly difficult particle physics Sudoku puzzle I created for the June/July 2007 issue of symmetry.

As Sudoku has taken off in popularity, a new area of mathematics has grown: Sudoku mathematics! There are many open math questions to do with Sudoku, especially when you generalize a Sudoku beyond the usual 9×9 grid. Combinatorics, number theory, and group theory all come into play.

One open question is how many clue entries you need to make a Sudoku solvable. There are Sudoku puzzles with only 17 clues, but can that be lowered? A new distributed computing challenge seeks to provide an answer.

International Science Grid This Week recently ran a cool story about the challenge. As for the particle physics Sudoku, if you need help, here’s the solution.

David Harris

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