Angels Demons Page 0,17

engine.

Langdon pictured the darkness of the empty shaft below them. He tried to block it out by staring at the numbered display of changing floors. Oddly, the elevator showed only two stops. Ground Level and LHC.

"What's LHC stand for?" Langdon asked, trying not to sound nervous.

"Large Hadron Collider," Kohler said. "A particle accelerator."

Particle accelerator? Langdon was vaguely familiar with the term. He had first heard it over dinner with some colleagues at Dunster House in Cambridge. A physicist friend of theirs, Bob Brownell, had arrived for dinner one night in a rage.

"The bastards canceled it!" Brownell cursed.

"Canceled what?" they all asked.

"The SSC!"

"The what?"

"The Superconducting Super Collider!"

Someone shrugged. "I didn't know Harvard was building one."

"Not Harvard!" he exclaimed. "The U.S.! It was going to be the world's most powerful particle accelerator! One of the most important scientific projects of the century! Two billion dollars into it and the Senate sacks the project! Damn Bible-Belt lobbyists!"

When Brownell finally calmed down, he explained that a particle accelerator was a large, circular tube through which subatomic particles were accelerated. Magnets in the tube turned on and off in rapid succession to "push" particles around and around until they reached tremendous velocities. Fully accelerated particles circled the tube at over 180,000 miles per second.

"But that's almost the speed of light," one of the professors exclaimed.

"Damn right," Brownell said. He went on to say that by accelerating two particles in opposite directions around the tube and then colliding them, scientists could shatter the particles into their constituent parts and get a glimpse of nature's most fundamental components. "Particle accelerators," Brownell declared, "are critical to the future of science. Colliding particles is the key to understanding the building blocks of the universe."

Harvard's Poet in Residence, a quiet man named Charles Pratt, did not look impressed. "It sounds to me," he said, "like a rather Neanderthal approach to science... akin to smashing clocks together to discern their internal workings."

Brownell dropped his fork and stormed out of the room.

So CERN has a particle accelerator? Langdon thought, as the elevator dropped. A circular tube for smashing particles. He wondered why they had buried it underground.

When the elevator thumped to a stop, Langdon was relieved to feel terra firma beneath his feet. But when the doors slid open, his relief evaporated. Robert Langdon found himself standing once again in a totally alien world.

The passageway stretched out indefinitely in both directions, left and right. It was a smooth cement tunnel, wide enough to allow passage of an eighteen wheeler. Brightly lit where they stood, the corridor turned pitch black farther down. A damp wind rustled out of the darkness - an unsettling reminder that they were now deep in the earth. Langdon could almost sense the weight of the dirt and stone now hanging above his head. For an instant he was nine years old... the darkness forcing him back... back to the five hours of crushing blackness that haunted him still. Clenching his fists, he fought it off.

Vittoria remained hushed as she exited the elevator and strode off without hesitation into the darkness without them. Overhead the flourescents flickered on to light her path. The effect was unsettling, Langdon thought, as if the tunnel were alive... anticipating her every move. Langdon and Kohler followed, trailing a distance behind. The lights extinguished automatically behind them.

"This particle accelerator," Langdon said quietly. "It's down this tunnel someplace?"

"That's it there." Kohler motioned to his left where a polished, chrome tube ran along the tunnel's inner wall.

Langdon eyed the tube, confused. "That's the accelerator?" The device looked nothing like he had imagined. It was perfectly straight, about three feet in diameter, and extended horizontally the visible length of the tunnel before disappearing into the darkness. Looks more like a high-tech sewer, Langdon thought. "I thought particle accelerators were circular."

"This accelerator is a circle," Kohler said. "It appears straight, but that is an optical illusion. The circumference of this tunnel is so large that the curve is imperceptible - like that of the earth."

Langdon was flabbergasted. This is a circle? "But... it must be enormous!"

"The LHC is the largest machine in the world."

Langdon did a double take. He remembered the CERN driver saying something about a huge machine buried in the earth. But -

"It is over eight kilometers in diameter... and twenty-seven kilometers long."

Langdon's head whipped around. "Twenty-seven kilometers?" He stared at the director and then turned and looked into the darkened tunnel before him. "This tunnel is twenty-seven kilometers long? That's... that's over sixteen miles!"

Kohler