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  #121 (permalink)  
Old 06-November-2009, 05:43 AM
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How the hell does bread "paralyse" a high voltage installation?

How would bread paralyze a high voltage anything for that matter.
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  #122 (permalink)  
Old 06-November-2009, 02:22 PM
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At first glance, I assumed that a worker had possibly been eating in a restricted area, which would be unprofessional but not unheard of.

But later in the article, it's implied that the power area is outside:
Quote:
A spokeswoman for CERN confirmed that baguette was responsible for the latest hiatus, but she conceded that mystery surrounded the way it got into the vital power installation, which is protected by high security fences.
“Nobody knows how it got there,” she told The Times. “The best guess is that it was dropped by a bird, either that or it was thrown out of a passing aeroplane.”
I'm leaning toward's ToSeek's theory that its a hoax --- hard to imagine that outside equipment (exposed to rain/snow, wind blown debris) would be done in by foodstuffs.
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  #123 (permalink)  
Old 06-November-2009, 03:29 PM
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I on the other hand am interested in this (quote from theregister):

Quote:
[...]the climbing temperatures would have been noted and the beams diverted - rather in the fashion that a runaway truck or train can be - into "dump caverns" lying a little off the main track of the LHC. In these large artificial caves, each beam would power into a "dump core", a massive 7m-long graphite block encased in steel, water cooled and then further wrapped in 750 tonnes of concrete and iron shielding. The dump core would become extremely hot and quite radioactive[...]
Sounds to me like the world's biggest fuse - but how much power is really in those beams? Even if they're very fast, I thought we were talking very small amounts of TeV measured.
How radioactive would they really get from one dump- and will those fuses need to be replaced sometime? The article goes on to detail the shielding from the outside world, but how would we do if we had to change them?

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  #124 (permalink)  
Old 06-November-2009, 10:28 PM
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hmm...I say this humorously, knowing someone will believe it, but TWO points in favor of "LHC makes earth-eating black hole" combined with "quantum immortality paradox"
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  #125 (permalink)  
Old 12-November-2009, 06:23 PM
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Default Particles have gone half way round the LHC

http://user.web.cern.ch/user/news/2009/091109.html

"On Saturday evening, at around 8 p.m., after passing through the LHCb detector, for the first time since last year's incident, protons arrived at the doorstep of the CMS experiment, thus completing half the journey around the LHC's circumference.
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  #126 (permalink)  
Old 12-November-2009, 07:22 PM
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Talking only half a black hole

Quote:
Originally Posted by Jerry View Post
http://user.web.cern.ch/user/news/2009/091109.html

"On Saturday evening, at around 8 p.m., after passing through the LHCb detector, for the first time since last year's incident, protons arrived at the doorstep of the CMS experiment, thus completing half the journey around the LHC's circumference.
Jerry. Did they make only half a black hole? pete
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Old 12-November-2009, 07:48 PM
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Quote:
Originally Posted by trinitree88 View Post
Jerry. Did they make only half a black hole? pete
ROFL! Now that would be a sight to see in one's mind eye.....half of a black hole!
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  #128 (permalink)  
Old 12-November-2009, 08:07 PM
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If 11-dimensional M-theory is correct in it's predictions, then the LHC should only be able to pull in some of the extra dimensions momentarily to prove 1) that gravitons exist and are a force particle 2) that gravity is not as weak as we perceive it to be.

If and only if there are the extra dimensions predicted by 11-dimensional M-theory as proposed by Ed Witten, will the LHC have enough energy to momentarily create a singularity, thus replicating the conditions that were present at the time of the big bang.

If those brilliant particle physicists at CERN manage to pull this off, then I think both Stephen Hawking and Ed Witten will finally receive the Nobel prize for which they both so richly deserve.

Eric
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  #129 (permalink)  
Old 12-November-2009, 08:44 PM
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You know the question that they are trying to answer at CERN at this time in history is very simple. It is simply this: How does gravity behave on the quantum level? Nothing more. It's just something that we do not yet understand. It's an important question that needs to be answered. It's as simple as 1,2,3.

Eric
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  #130 (permalink)  
Old 13-November-2009, 09:58 PM
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CERN Bulletin, Issue No. 47-48/2009 - Monday 16 November 2009

The truth about Birds and Baguettes

Quote:
To this day, we do not know what caused the power cut, but it is true that feathers and bread were found at the site. The truth about birds and baguettes is that two sectors of the LHC warmed by a few degrees while the substation was repaired, and were then cooled back to 1.9K. There was no damage, and no delay. Had we been running, we’d have lost a day or two’s worth of beam time, which is nothing unusual when operating a frontier research machine like the LHC. Power cuts are, of course, something that the LHC has been designed to cope with, as have all its predecessors.
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  #131 (permalink)  
Old 18-November-2009, 07:44 PM
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Just came across this new site http://www.lhcportal.com/ which might appeal to LHC geeks/nerds/wonks.

To be fair, I should credit The Register where I found it
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  #132 (permalink)  
Old 21-November-2009, 11:16 PM
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CERN Press Release: The LHC is back

Quote:
Particle beams are once again circulating in the world’s most powerful particle accelerator, CERN1’s Large Hadron Collider (LHC). This news comes after the machine was handed over for operation on Wednesday morning. A clockwise circulating beam was established at ten o'clock this evening. This is an important milestone on the road towards first physics at the LHC, expected in 2010.

“It’s great to see beam circulating in the LHC again,” said CERN Director General Rolf Heuer. “We’ve still got some way to go before physics can begin, but with this milestone we’re well on the way.”
[...]
A press conference will be held at CERN, at the Globe of Science and Innovation, at 2pm on Monday 23 November, and webcast at: http://webcast.cern.ch/. Submit your questions to @CERN via Twitter. We cannot guarantee that all questions will be answered.

Follow LHC progress on twitter at www.twitter.com/cern
For photos, video and latest information see: http://press.web.cern.ch/press/lhc-first-physics/
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  #133 (permalink)  
Unread Yesterday, 12:09 AM
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Hi !

I was looking at my web log and saw hits coming from the link your provided to my web site, http://www.lhcportal.com/ Thank you for the mention !

The best way to follow event by event updates is using this log.
http://cmsdoc.cern.ch/cms/performanc...mmentary09.htm

Its under the CMS section of the portal under Live Log

Thanks again for the interest in my site.
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  #134 (permalink)  
Unread Yesterday, 08:44 PM
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From the BBC
Quote:
Engineers working on the Large Hadron Collider (LHC) have smashed together proton beams for the first time.

The step was described as a "great achievement" for those working on the giant physics experiment.

The low-energy collisions came as researchers circulated two beams simultaneously in the LHC's 27km-long tunnel earlier on Monday.
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  #135 (permalink)  
Unread Today, 01:41 AM
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Quote:
Originally Posted by Xymox View Post
Hi !
Hi, Xymox. Welcome to BAUT Forum and enjoy -- if you stick around. I can understand if you just joined up for a one-time informational pointer. That's cool.

I promise not too many BAUT members will accuse you of literal earth-shattering developments. Most of us are just eagerly following the science news.

From the recommended commentary, CMS e-commentary for 2009 LHC Beams

Quote:
23 NOV, 18:45, BEAM CROSSING POINT
So our beam monitoring guys estimate that the two beams the passed through CMS earlier today crossed about -45cm from the center of our experiment (right of CMS viewed from inside the ring).
No! Don't cross the beams!

(Just kidding.)

===

Meanwhile, the BA Blog (by our dear Bad Astronomer) notes the happy events: LHC sees its first collisions!

Quote:
Hey, is the Earth still here? Because the Large Hadron Collider saw its first proton collisions today!
OK, it wasn’t at full power, and this is just a preliminary test, but still: It works!
Congratulations to all involved.

And Cosmic Variance: First Collisions in the LHC!

Quote:
The LHC circulated two counter-rotating beams today, and a few hours ago the CMS experiment recorded its first collision event, shown in the display above. This is a fantastic milestone for the LHC and the experiments!
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