I've read Angels and Demons and I know that this will oinly lead to the Vatican being blown up. Foolish, foolish, scientists!
The European Organisation for Nuclear Research (CERN) last Friday lowered into position the final major component of its Large Hadron Collider (LHC) - a 100-tonne "small" wheel which forms part of the ATLAS muon spectrometer. The last piece of the "world’s largest jigsaw puzzle", as CERN puts it, was lowered down the 100 metre …
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Well, it's going to be October at least until you see first pp collisions.
At http://www.math.columbia.edu/~woit/wordpress/?p=660, Peter Woit writes:
_So, most optimistically, it looks like mid-late October is the earliest that 7 TeV collisions could be happening, right around the date of the official inauguration: October 21. More realistically, this may very well take until early 2009._
No need to rush to your do-it-yourself store for that crowbar yet.
Are they being a bit slap dash
ATLAS's role is to measure particles produced in proton-proton collisions within its 7000 tonne, 28,750 cubic metre bulk packing 100 million sensors.
CERN explains: "As particles pass through a magnetic field produced by superconducting magnets, this detector has the ability to accurately track them to the width of a human hair."
Proton Size ~ 0.000000000000001 m
Human Hair ~ 0.0001 m
Anybody see some difference in scale?
The previous posters were right it going to be Another World/Fade to Black/Half Life - do these scientist never play games???
[The LHC will, once operational, allow scientists to probe the mysteries of the universe, including dark matter, matter "as it existed close to the beginning of time" and possible extra dimensions of spacetime]
Hands up if you think it's a good idea to do that on the planet you live on...
[CERN explains: "As particles pass through a magnetic field produced by superconducting magnets, this detector has the ability to accurately track them to the width of a human hair."]
Which is about as impressive as saying we have spent £x billion on a system that can track a car to within the width of the planet. Seriously, how many subatomic particles can you fit in the width of a human hair? By my (very poor research and maths) I make it 100,000,000,000. For a nucleon that is. This is my impressed face -> -.-
actually the Machine Operators (who do extensive shift-work) are the ones usually driving the sports cars. (It helps that with a 431K CERN number plate you can get a tax-free sports car!)
I have done machine experiments at 3am with <http://en.wikipedia.org/wiki/Yuri_Feodorovich_Orlov> Yuri didn't drive a sports car.
I prefer Ferney Voltaire to St.Genis-Pouilly (what will happen to the protons in November when the Swiss/EU border is dissolved??) (they currently have to pass the Douanes every 45microseconds!!)
/don't need a coat, the skyshine keeps me warm
Christ's sake - for an IT related site there sure are a whole lot of scientifically challenged reprobates out there!
'We're all going to get sucked into a black hole' - I suspect not.
'How long does it take to get sucked in to a black hole?' - well... I guess that kind of depends how big it is... and also whether you're observing someone fall into a black hole or falling in to it yourself etc, etc, etc...
As good as Half Life is, I can' really see some physicists playing it and suddenly worrying "Oh my god! What are we doing? I've gotta stop this crazy experiment.!"
Are we all still so luddite that when any major technology comes round the corner we all start declaring the end of the world? Oh my god - It's a digital watch! This is where Skylab started! Run to the nuclear bunkers now!
Paris - Coz I know where I'd like to accelerate my hadrons!
"As particles pass through a magnetic field produced by superconducting magnets, this detector has the ability to accurately track them to the width of a human hair."
Heisenberg Uncertainty Principle, anyone? The LAC is optimised to measure momentum, therefore delta-p is small and delta-x is correspondingly big.
I can't be arsed to look anything up or calculate it though. Perhaps a bored Physics undergrad may wish to have a go?
> Proton Size ~ 0.000000000000001 m
> Human Hair ~ 0.0001 m
That doesn't matter. What they're measuring are the angles at which the debris from the collision diverge. Being able to measure to of the order of microns at a distance of metres from the point of the collision gives a pretty fine angular resolution. Any imbalance in the angles may indicate "lost" energy due to undetected particles.
How can you argue about accuracy when you are not even using the correct units of measurement.
"ATLAS's role is to measure particles produced in proton-proton collisions within its 7000 tonne, 28,750 cubic metre bulk packing 100 million sensors."
"ATLAS's role is to measure particles produced in proton-proton collisions within its 1666.6667 Kilo Jubs, 49916660.8792 bulgarian funbags - (C Cup Posh Spice bulk) packing 100 million sensors."
Please pay attention to the details guys!!
I beg to differ. Writing code for BNFL I interpreted physycysts' (can't spell won't spell) specs and wrote code. In C++, no less. Blimey. Divide by zero errors happened. Phyzzy: But there will always be neutrons! Me: What, even when you havn't comissioned the reprocessing plant?
But, for my 2p worth, I put my faith, and that of the entire world's humaity, in the fact that Hawking got it right and the micro-black holes will dissipate. Phew!
I was curious about the microns/protons difference too; I put it down to uncertainty and that they need to measure the speed too. Deriving root mean squares feels like work, but the AC suggestion of angles being of prime importance (and m vs µm) is pretty convincing as well.
The answer, as someone points out, is different if you're doing it or watching it. If you're being sucked into a black hole, time dilates for you as you approach the event horizon, so that it may feel like a *very* long time. This is likely to be more unpleasant than boring; due to tidal forces your feet will weigh vastly more than your head (supposing you fall feet first, YMMV).
I was going to contrast how different this would be to being sucked in by a Dan Brown novel, but I changed my mind.
Remember when you mother told you not to mess with things you don't understand......Well this sounds like the perfect time to listen to her advice as this surely can only end in tears with some smug scientist saying "See I told you not to do it"
Mine is the full charged HEV suit with the gravity gun.
Some careless twat of a janitor leaves his cheese-and-egg sandwich and thermos in the middle of the thing so that when they switch it on flukish conditions cause it to function as a stable fusion generator, pumping out more energy than the initial charge they put in it (and remains pumping out power after they shut off the power feed to it) so the whole "renewable power source" argument gets consigned to the scrap-heap for good.
Hey, it might happen... Bell was merely trying to make a more responsive telegraph when he accidentally revolutionised our lives.
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