Kewl! For years, after my first intention to be an astronomer, I was determined 
to be a nuclear physicist. Even visited a fusion reactor test system at 
UT-Austin. I love this stuff. I'm still trying to wrap my mind around a 
"particle" carrying mass, but boy am I excited to think about it, and some 
final understanding of why anti-matter didn't get produced in greater 
quantities. And guess what? No black holes opened up to swallow France (right 
wingnuts will be dismayed at that)...no other-dimensional evil aliens swarmed 
through a rip in spacetime to eat our souls and brains (too bad, I could have 
sent them to Wasilla)...no lethal radiation turned the Swiss into zombie 
mutants. 

The funny thing is the scientists who are actually *tweeting* about this like 
excited teenagers! My gosh, social networking is something else. Will the next 
astronauts to land on Mars or something, instead of saying something profound, 
pull out their phones and tweet? I can see it now: 

"Really cold. Lots of red dirt. Johnson just fell, now his butt is red too. 
LOL. Wish u cld c it 2. --Starlover656" 

**************************************************************** 


Geneva atom smasher sets collision record 
[AP News] 

. 

By ALEXANDER G. HIGGINS, Associated Press Writer Alexander G. Higgins, 
Associated Press Writer – 33 mins ago 


GENEVA – The world's largest atom smasher conducted its first experiments at 
conditions nearing those after the Big Bang, breaking its own record for 
high-energy collisions with proton beams crashing into each other Tuesday at 
three times more force than ever before. 

In a milestone for the $10 billion Large Hadron Collider 's ambitious bid to 
reveal details about theoretical particles and microforces, scientists at the 
European Organization for Nuclear Research, or CERN, collided the beams and 
took measurements at a combined energy level of 7 trillion electron volts. 

The collisions herald a new era for researchers working on the machine in a 
17-mile (27-kilometer) tunnel below the Swiss-French border at Geneva. 

"That's it! They've had a collision," said Oliver Buchmueller from Imperial 
College in London as people closely watched monitors. 

In a control room, scientists erupted with applause when the first successful 
collisions were confirmed. Their colleagues from around the world were tuning 
in by remote links to witness the new record, which surpasses the 2.36 TeV CERN 
recorded last year. 

Dubbed the world's largest scientific experiment, researchers hope the machine 
can approach on a tiny scale what happened in the first split seconds after the 
Big Bang, which they theorize was the creation of the universe some 14 billion 
years ago. 

The extra energy in Geneva is expected to reveal even more about the unanswered 
questions of particle physics , such as the existence of antimatter and the 
search for the Higgs boson , a hypothetical particle that scientists theorize 
gives mass to other particles and thus to other objects and creatures in the 
universe. 

Tuesday's initial attempts at collisions were unsuccessful because problems 
developed with the beams, said scientists working on the massive machine. That 
meant the protons had to be "dumped" from the collider and new beams had to be 
injected. 

The atmosphere at CERN was tense considering the collider's launch with great 
fanfare on Sept. 10, 2008. Nine days later, the project was sidetracked when a 
badly soldered electrical splice overheated, causing extensive damage to the 
massive magnets and other parts of the collider some 300 feet (100 meters) 
below the ground. 

It cost $40 million to repair and improve the machine. Since its restart in 
November 2009, the collider has performed almost flawlessly and given 
scientists valuable data. It quickly eclipsed the next largest accelerator — 
the Tevatron at Fermilab near Chicago. 

Two beams of protons began 10 days ago to speed at high energy in opposite 
directions around the tunnel, the coldest place in the universe, at a couple of 
degrees above absolute zero. CERN used powerful superconducting magnets to 
force the two beams to cross, creating collisions and showers of particles. 

"Experiments are collecting their first physics data — historic moment here!" a 
scientist tweeted on CERN's official Twitter account. 

"Nature does it all the time with cosmic rays (and with higher energy ) but 
this is the first time this is done in Laboratory!" said another tweet. 

When collisions become routine, the beams will be packed with hundreds of 
billions of protons, but the particles are so tiny that few will collide at 
each crossing. 

The experiments will come over the objections of some people who fear they 
could eventually imperil Earth by creating micro black holes — subatomic 
versions of collapsed stars whose gravity is so strong they can suck in planets 
and other stars. 

CERN and many scientists dismiss any threat to Earth or people on it, saying 
that any such holes would be so weak that they would vanish almost instantly 
without causing any damage. 

Bivek Sharma, a professor at the University of California at San Diego , said 
the images of the first crashed proton beams were beautiful. 

"It's taken us 25 years to build," he said. "This is what it's for. Finally the 
baby is delivered. Now it has to grow." 

___ 

Reply via email to