Large Hadron Collider 7 TeV experiment on March 30
March 23, 2010
A view of a superconducting solenoid magnet at the European Organization for Nuclear Research (CERN) near Geneva. European researchers said they would next week move to the next stage of the experiment that will recreate conditions close to the Big Bang that hatched the universe.
(PhysOrg.com) -- With beams routinely circulating in the Large Hadron Collider at 3.5 TeV, the highest energy yet achieved in a particle accelerator, CERN has set the date for the start of the LHC research programme. The first attempt for collisions at 7 TeV (3.5 TeV per beam) is scheduled for 30 March.
“With two beams at 3.5 TeV, we’re on the verge of launching the LHC physics programme,” explained CERN’s Director for Accelerators and Technology, Steve Myers. “But we’ve still got a lot of work to do before collisions. Just lining the beams up is a challenge in itself: it’s a bit like firing needles across the Atlantic and getting them to collide half way.”
Between now and 30 March, the LHC team will be working with 3.5 TeV beams to commission the beam control systems and the systems that protect the particle detectors from stray particles. All these systems must be fully commissioned before collisions can begin.
“The LHC is not a turnkey machine,” explained Myers. “The machine is working well, but we’re still very much in a commissioning phase and we have to recognize that the first attempt to collide is precisely that. It may take hours or even days to get collisions.”
The last time CERN switched on a major new research machine, the Large Electron Positron collider, LEP, in 1989 it took three days from the first attempt to collide to the first recorded collisions.
The current LHC run began on 20 November 2009, with the first circulating beam at 0.45 TeV. Milestones were quick to follow, with twin circulating beams established by 23 November and a world record beam energy of 1.18 TeV being set on 30 November. By the time the LHC switched off for 2009 on 16 December, another record had been set with collisions recorded at 2.36 TeV and significant quantities of data recorded. Over the 2009 part of the run, each of the LHC’s four major experiments, ALICE, ATLAS, CMS and LHCb recorded over a million particle collisions, which were distributed smoothly for analysis around the world on the LHC computing grid. The first physics papers were soon to follow. After a short technical stop, beams were again circulating on 28 February 2010, and the first acceleration to 3.5 TeV was on 19 March.
Once 7 TeV collisions have been established, the plan is to run continuously for a period of 18-24 months, with a short technical stop at the end of 2010. This will bring enough data across all the potential discovery areas to firmly establish the LHC as the world’s foremost facility for high-energy particle physics.
Provided by Brookhaven National Laboratory
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Mar 23, 2010
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Mar 23, 2010
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From Wikipedia: Mad Scientist:
...Mad scientists also, whilst definitely being intelligent, if not necessarily brilliant, usually fail to think things through to their conclusion...
Some excerpts from the LSAG (CERN safety committee) summary report:... So just what do they think stable, neutral black holes, which remain on Earth, might do next?
Mar 23, 2010
Rank: 5 / 5 (6)
Kill all the crazies?
Mar 23, 2010
Rank: 1 / 5 (10)
Mar 23, 2010
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Mar 24, 2010
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Mar 24, 2010
Rank: 2.7 / 5 (3)
I`d rather stare my enemy in the face as i go down, wouldn`t you? :)
Mar 24, 2010
Rank: 4.4 / 5 (7)
It amuses me how religious folk are scared of what science might uncover and they sit on a COMPUTER!
Grow up children and lets see science take a massive step forward.
Mar 24, 2010
Rank: 5 / 5 (5)
first off, Stable: (adj)(1) : not readily altering in chemical makeup or physical state (2) : not spontaneously radioactive
second, the odds of them making a discovery that sparks a black hole is the same as learning to tie your shoes might yield a black hole.
because third, they've been using particle accels for years. they have an idea of what will HAPPEN; the only question is what subatomic particles they will see. when they say they don't know what to expect they're referring to their theoretical "Higgs Boson". They're running tests to find it and they don't know what to expect. They've never "tied their shoes this way" so to speak.
If you think they don't have a calculated outcome, go take a chemistry class sometime. They wouldn't have $5.6 Billion worth of funding without a strong hypothesis.
Mar 24, 2010
Rank: 5 / 5 (4)
Like the quantum theory and schrodinger's cat; if we can't observe it, we can't prove it happened.
Mar 24, 2010
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Mar 24, 2010
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http://cdsweb.cer...d/930479
Mar 24, 2010
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Mar 24, 2010
Rank: 5 / 5 (11)
And that just serves to show: LHC opponents really DON'T know what they're talking about!
Mar 24, 2010
Rank: 5 / 5 (5)
I suggest you read up on basic physics, the energies involved here are so incredibly small compared with the black holes you appear to be comparing this to that nothing will ever happen.
http://environmen...8-en.pdf
I despise when people quote documents out of context, so please read the full report. A bit of advice: Don't copy the text partway through a paragraph explaining why there is no threat.
Simply put:
The theory about "Stable" black holes is not supported by any body of evidence.
Any "stable" block hole would still disintergrate before having any effect.
Please stop spreading hysteria, how does it benefit anybody? Surely you must know that what you're spouting is false, I just can't understand your incentive to spread such bull.
Mar 24, 2010
Rank: 5 / 5 (4)
Even the highest energies created at CERN cannot rival the energies created by cosmic rays.
Just to put it into perspective, CERN will reach its full power by running at 14 TeV in 2 years. The highest energy cosmic ray detected had 10^8 TeV (source : http://www.telesc...ews.html - Article Cosmic-ray Theory Unravels). That's almost 10 Million times more energetic...and we're still here. I think you can put you bad mojo to rest.
Mar 24, 2010
Rank: 4.5 / 5 (2)
Thus we'll be experiencing frame tearing without the triple buffering / v-Sync option to rectify such atrocities...
Mar 24, 2010
Rank: 5 / 5 (3)
No, actually LHC proponents don't care about stupid life.
If science always stood on the safe side with no risks, we'd still be in caves. Grow up.
Mar 24, 2010
Rank: 4 / 5 (1)
How about this: if the LHC creates no stable world destroying black holes, you admit that you're bat-shit insane. If it does, we'll all be dead an it won't matter. Deal?
Mar 24, 2010
Rank: 3.3 / 5 (3)
Now that would be a shame, wouldnt it? :)
Mar 24, 2010
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Mar 24, 2010
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E=mc2 formula means equivalence, not identity. Therefore the energy of cosmic rays is irrelevant here, as these rays are always formed by single isolated protons, not by dense proton rays with zero momentum toward Earth.
Actually, formation of stable black holes during LHC experiments is expected and predicted by mainstream theories.
http://arxiv.org/.../0606193
http://iopscience...2/12/S52
http://cerncourie...rn/34938
http://news.scien...-01.html
Mar 24, 2010
Rank: 1 / 5 (2)
Mar 24, 2010
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they are going to go ahead no matter what anyone says so we have to just grin and bear it. I for one hope that it is an unqualified success but worry that something may have been overlooked that could cause a disaster. We forever hear this argument about cosmic rays hitting the atmosphere but isnt that the whole point they are stopped by the protective layers. I hope that if something does go wrong the whole device melts into a solid block together with the gong seeking crackpots.
Mar 24, 2010
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http://www.physor...986.html
Mar 24, 2010
Rank: 1 / 5 (1)
How are my quotes out of context? They're quite complete.Obviously, you fail to understand the term, "stable."
What's false about it? The physics I've "spouted" have been verified by the LSAG committee themselves (they just refuse to acknowledge the body of their own work).
Heck, I recently caught Stephen Giddings denying the differences between LHC and cosmic ray collisions again, on this very site!
Mar 24, 2010
Rank: 1 / 5 (1)
You obviously fail to understand the differential physics involved. It's called, "conservation of momentum." Look it up.
Mar 25, 2010
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Mar 25, 2010
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Mar 26, 2010
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Mar 27, 2010
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Mar 27, 2010
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http://arxiv.org/.../0301003
http://arxiv.org/.../0606193
http://cerncourie...rn/34938
After then we can discuss only, whether micro-black holes and strangelets are safe and whether anyone who thinks they're not is mentally retarded.
The asymmetry follows from the fact, if broglia will be true, nobody will left for to say "I was wrong, I'm an idiot" - for sure.
Mar 27, 2010
Rank: 1 / 5 (1)
Personally, I doubt the danger would become apparent in my lifetime.
Mar 28, 2010
Rank: 3 / 5 (2)
http://www.univer...-matter/
Mar 28, 2010
Rank: 2.3 / 5 (3)
http://www.newsci...lhc.html
Every concentration of mandatory fees creates an island of communism in the society, separated from needs and interests of the rest of society like boson condensate inside of black hole.
http://www.nature...82a.html
Mar 28, 2010
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Mar 28, 2010
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Mar 29, 2010
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Mar 29, 2010
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Even if they evaporate, there's room to doubt the micro black hole can expel more energy than is being forced into it. It depends on the rate of evaporation versus the energy density initially being fed into the micro black hole.
They expect them to evaporate rapidly at a terrific temperature but, as I said, there's room to doubt.