Most Powerful Particle Collisions Yet

Large Hadron Collider smashes protons, record

The Large Hadron Collider in Geneva succeeded early Tuesday in colliding subatomic particles at three times the highest energy levels previously recorded.

Scientists gathered in a room at Caltech and in similar groups around the globe witnessed the achievement at 3:58 PDT.

“There were cheers in all the control rooms,” said Caltech physicist Harvey Newman. “As soon as we get the data, we’re analyzing it. … It’s been a long time coming.”

Researchers were waiting for the promised flood of data that would come as protons from two particle beams from the 17-mile-circumference collider smashed into each other.

Several experiments using the particle accelerator could help test for smaller particles, dark matter, other dimensions, supersymmetry and other theories in particle physics, researchers said.

“We’re pretty happy because we’ve been waiting all night,” said Andy Yen, 21, a senior who had worked on experiments related to the collider for most of his undergraduate career. “Some people have been waiting 15, 20 years. it’s late, but it’s worth it.”

Earlier that night, two previous attempts to ramp up the accelerator had been cut short, and the researchers, who at peak attendance numbered two-dozen-plus, were running low on pizza and energy. The buzz of conversation between professors and doctoral candidates died down each time the two beams were spun in preparation for the planned collision.

See also:
Cern LHC sees high-energy success
LHC experiments run at highest energy level yet
LHC Turns on, Powers up to Record-Shattering 7 TeV Collision
LHC achieves record collisions, starts gathering data
Large Hadron Collider Finally Smashing Properly
Large Hadron Collider a smashing success: Don’t panic!
Large Hadron Collider – Live!
Watch the Large Hadron Collider Experiments Live

/well, we’re all still here, no earth-engulfing black holes were created, and that’s a good thing

Get Your Physics Fun While It Lasts

They just restarted the LHC about a week ago and now they’re already announcing it needs to be shut down again. I bet that right about now they wish the could return it and get their $5 billion back. What a gigantic boondoggle. As I’ve said before, they should have had the Germans build it in the first place.

LHC to shut down for a year to address design faults

The Large Hadron Collider (LHC) must close at the end of 2011 for up to a year to address design issues, according to an LHC director.

Dr Steve Myers told BBC News the faults will delay the machine reaching its full potential for two years.

The atom smasher will reach world record collision energies later this month at 7 trillion electron volts.

But joints between the machine’s magnets must be strengthened before higher-energy collisions can commence.

The Geneva-based machine only recently restarted after being out of action for 14 months following an accident in September 2008.

Dr Myers said: “It’s something that, with a lot more resources and with a lot more manpower and quality control, possibly could have been avoided but I have difficulty in thinking that this is something that was a design error.”

He said: “The standard phrase is that the LHC is its own prototype. We are pushing technologies towards their limits.”

“You don’t hear about the thousands or hundreds of thousands of other areas that have gone incredibly well.

“With a machine like the LHC, you only build one and you only build it once.”

He said the second problem is not with the most complex technology but involves the copper sheaths around the superconducting joints in the tunnel.

The copper sheaths are a failsafe mechanism designed to take up the current if one of the magnets in the Large Hadron Collider warms up – an incident known as a “quench”.

The 2008 accident caused one tonne of helium to leak into the tunnel and resulted in a series of “quenches” and a 40m Swiss franc (£24m) repair bill.

Engineers believe the machine is now safe to run at 7 trillion electron volts (TeV) but are anxious to avoid another breakdown.

So they have taken the decision to run the machine for 18 to 24 months at half-maximum power before switching it off for a year to carry out improvements to the 27km tunnel.

Dr Myers said the decision was taken jointly with the physicists working on the four giant particle detectors on the LHC.

He said they appreciate the chance to test their own equipment while the machine is running at half its maximum power.

See also:
Large Hadron Collider to close for a year for refit and repairs
Large Hadron Collider ‘to shut down for a year’
Hadron Collider to be closed amid fears of a very big bang
CERN’s Large Hadron Collider, world’s largest atom-smasher, needs to be shut down for repairs
Large Hadron Collider will finally reach full power in 2013… eight years behind schedule
Collider to shut down at end of 2011
Large Hadron Collider shutdown planned
Large Hadron Collider to shut down, not baguette this time
Scientists rubbish stories about LHC shutdown over safety concerns
Woman, fearing apocalypse, tries to halt collider
Woman fails to shut down Large Hadron Collider
Here We Go Again

As they say, measure twice, cut once.

/on the bright side, at least while it’s shut down again, they won’t have to pay the ridiculously high electric bill for all the vast amounts of power that the LHC sucks down while in operation

Here We Go Again

How long before it breaks down again? They should have had the Germans build it in the first place.

CERN restarting Large Hadron Collider

The Large Hadron Collider, the world’s largest particle accelerator, is set to restart late Monday following a technical break and a glitch on Saturday.

The first proton beams of 2010 were circulated in the Large Hadron Collider on Saturday, CERN said Monday. The machine had been undergoing technical maintenance for 10 weeks. However, soon after the beams were circulated Saturday, they had to be stopped to allow for maintenance to the cryogenic systems that help regulate the superconducting magnets, according to CERN, which is also known as the European Organization for Nuclear Research.

“Engineers had to access the filters for the cryogenic systems,” a CERN representative said Monday. “They are fixing that, and we expect…beams to be circulating again tonight.”

LHC to restart following break and glitches

The world’s largest particle accelerator is to restart on Monday following a technical break and glitches in the machine.

The first proton beams of 2010 were circulated in the Large Hadron Collider (LHC) on Saturday, Cern said on Monday. The machine had been undergoing technical maintenance for 10 weeks.

However, soon after the beams were circulated on Saturday, the beams had to be stopped to allow maintenance to cryogenic systems which help regulate the superconducting magnets, according to Cern.

“Engineers had to access the filters for the cryogenic systems,” a spokesperson for the organisation said. “They are fixing that, and we expect to beams to be circulating again tonight.”

The beams will be injected at an energy of 450 gigaelectron volts (GeV). The beam energy will be slowly increased until it reaches 3.5 teraelectron volts (TeV) per beam, which is expected to happen in 2 to 4 weeks.

Cern said at the beginning of February that it plans to run the LHC for up to two years at 3.5 TeV, then shut the machine down prior to preparing it to run at 7 TeV per beam.

The LHC has been designed to conduct experiments that will reveal new physics, including proving the existence of the Higgs boson, a hypothetical elementary particle.

The LHC as a project has had mixed fortunes. It was forced to shut down shortly after powering up in 2008 following a helium leak, and was then subject to various delays to its restart. However, when it did start up again in November it quickly became the world’s most powerful particle accelerator, before being halted again for maintenance.

See also:
Hadron collider resumes, full speed seen in weeks
Large Hadron Collider back in action
“Big Bang” Collider Restarted In Europe
Large Hadron Collider briefly back on over weekend
Large Hadron Collider in multi-magnet quench hiccup
Design Flaws Caused the Massive LHC Glitch
Watch Out For Black Holes!
Saw This In a Movie Once, Pretty Sure It’ll Work*

/round and round it goes, what will end up getting blown up this time, no one really knows

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