[quote]Geneva, 23 June 2014. The Large Hadron Collider (LHC), the largest and most powerful particle accelerator in the world, has started to get ready for its second three-year run. Cool down of the vast machine has already begun in preparation for research to resume early in 2015 following a long technical stop to prepare the machine for running at almost double the energy of run 1. The last LHC magnet interconnection was closed on 18 June 2014 and one sector of 1/8 of the machine has already been cooled to operating temperature. The accelerator chain that supplies the LHC’s particle beams is currently starting up, with beam in the proton synchrotron accelerator last Wednesday for the first time since 2012.
“There is a new buzz about the laboratory and a real sense of anticipation,” said CERN1 Director General Rolf Heuer, speaking at a press conference at the EuroScience Open Forum, ESOF, meeting in Copenhagen. “Much work has been carried out on the LHC over the last 18 months or so, and it’s effectively a new machine, poised to set us on the path to new discoveries.”
Over the last 16 months, the LHC has been through a major programme of maintenance and upgrading, along with the rest of CERN’s accelerator complex, some elements of which have been in operation since 1959. Some 10,000 superconducting magnet interconnections of were consolidated in order to prepare the LHC machine for running at its design energy.[/quote]
[url]http://press.web.cern.ch/press-releases/2014/06/cern-announces-lhc-restart-schedule[/url]
Fingers crossed for discovery of a superpartner (or I will cry)!
[QUOTE=JohnnyMo1;45194528]
Fingers crossed for discovery of a superpartner (or I will cry)![/QUOTE]
I know you are all into physics and stuff but I think you would still have a decent chance on OKcupid or something
Now we wait for people to think this means the world is going to end. Again.
I'm just going to smile and nod, but still it's always good that the supercollider is back up and ready to make some awesome sorcery.
What's the collision energy their hoping to boost it too? 20-30TeV?
[QUOTE=LoneWolf_Recon;45194761]What's the collision energy their hoping to boost it too? 20-30TeV?[/QUOTE]
13 TeV. It was running at 7 TeV and then 8 TeV for a while until the shutdown.
The PR mentions dark matter as something that could be studied with the aid of the LHC - exactly how is that gonna work?
[QUOTE=GoDong-DK;45194986]The PR mentions dark matter as something that could be studied with the aid of the LHC - exactly how is that gonna work?[/QUOTE]
Well the hope is that dark matter is some kind of undiscovered particle that only interacts gravitationally. It could potentially be created in a particle collider given enough energy.
Get ready for some end of world theories
[QUOTE=Falubii;45195039]Well the hope is that dark matter is some kind of undiscovered particle that only interacts gravitationally. It could potentially be created in a particle collider given enough energy.[/QUOTE]
Kinda makes me wonder what we could use dark matter for if we could synthesis and manipulate it. Guess we gotta synthesise it and work out whatever properties it may have that we don't already know.
[QUOTE=SIRIUS;45195040]Get ready for some end of world theories[/QUOTE]
[I]again[/I]
[QUOTE=JohnnyMo1;45194528]
Fingers crossed for discovery of a superpartner (or I will cry)![/QUOTE]
Can I ask what that is exactly.
[QUOTE=Clavus;45195496]Can I ask what that is exactly.[/QUOTE]
I looked it up on wikipedia but my brain ran out my ears and soaked into the carpet
[QUOTE=Zeke129;45195507]I looked it up on wikipedia but my brain ran out my ears and soaked into the carpet[/QUOTE]
Sounds like you were looking at the wrong article [url]http://en.wikipedia.org/wiki/Liquefactive_necrosis[/url]
[QUOTE=Falubii;45195039]Well the hope is that dark matter is some kind of undiscovered particle that only interacts gravitationally. It could potentially be created in a particle collider given enough energy.[/QUOTE]
I was kinda thinking dark energy for some reason, I should really go to bed.
I'm going there in 2-3 weeks and because its shutdown we might be able to go down 100m and actually see it.
[QUOTE=Clavus;45195496]Can I ask what that is exactly.[/QUOTE]
As far as I know (and I might be very wrong, so don't hesitate to correct me), superpartners are a crucial part of our currently accepted theory of supersymmetry, which explains most of those really weird things in physics. Basically, supersymmetry says that there are two classes of particles, bosons and fermions, and each particle in one class has an associated particle in the other class. Every electron would have a partner selectron, for example. If we confirm the existence of superpartners, it'll confirm supersymmetry. If we don't, we'll either have to keep hunting for them or go back to the drawing board.
Im still waiting for them to put a super-collider around the equator. That will be max level.
I guess turning it off and on again really is universal.
[QUOTE=Coyoteze;45194553]Now we wait for people to think this means the world is going to end. Again.[/QUOTE]
Well yeah, everybody knows CERN is trying to create a time machine a take over the worlld
[QUOTE=Clavus;45195496]Can I ask what that is exactly.[/QUOTE]
well from what i'm reading it's a hypothetical particle that is the "shadow particle" to another. Atleast thats what i gather
The whole 'cooldown' thing had me really confused, since most things heat up in use and need to cool down to avoid damage, whereas this needs to cool down for use.
[QUOTE=Clavus;45195496]Can I ask what that is exactly.[/QUOTE]
Basically what this guy said:
[QUOTE=supersnail11;45196102]As far as I know (and I might be very wrong, so don't hesitate to correct me), superpartners are a crucial part of our currently accepted theory of supersymmetry, which explains most of those really weird things in physics. Basically, supersymmetry says that there are two classes of particles, bosons and fermions, and each particle in one class has an associated particle in the other class. Every electron would have a partner selectron, for example. If we confirm the existence of superpartners, it'll confirm supersymmetry. If we don't, we'll either have to keep hunting for them or go back to the drawing board.[/QUOTE]
Supersymmetry posits that all particles have a superpartner, i.e. bosons have a corresponding fermion and fermions have a corresponding boson. They have all the same quantum numbers except spin, which is offset by 1/2 between partners. Superstring theories rely on supersymmetry, which makes it kind of a big deal for string theory.
Although the LHC can't [I]conclusively[/I] disprove supersymmetry (symmetry could be broken at any energy scale up to the planck energy), failing to find any superpartners will certainly make people more skeptical.
[editline]23rd June 2014[/editline]
Also, there's currently a bet going on since 2000 about whether or not the LHC will discover a superpartner of a Standard Model particle by 2016. The losers each have to chip in a $>100 bottle of cognac for a party for the winners.
cooling down and cranking it up, its such a monster of a science experiment
[url]http://www.symmetrymagazine.org/sites/default/files/pdfs/articles/logbook_SUSY_bet.pdf[/url]
If I was angling for best chance of sipping free cognac at a nice party, I'd probably go with the "No" team, but my enduring optimism that the universe is mathematically elegant would make me want to vote "Yes." There are some big names on both sides (notably, 't Hooft is a Nobel winner, and Arkani-Hamed won a $3 million Fundamental Physics Prize back in 2012).
JWST > LHC. :eng101:
[QUOTE=JohnnyMo1;45197206]Supersymmetry posits that all particles have a superpartner, i.e. bosons have a corresponding fermion and fermions have a corresponding boson. They have all the same quantum numbers except spin, which is offset by 1/2 between partners. Superstring theories rely on supersymmetry, which makes it kind of a big deal for string theory.
Although the LHC can't [I]conclusively[/I] disprove supersymmetry (symmetry could be broken at any energy scale up to the planck energy), failing to find any superpartners will certainly make people more skeptical.[/QUOTE]
How would smashing atoms into each other really really hard help to (potentially) detect superpartners? What does 'breaking the symmetry' entail?
[QUOTE=Coyoteze;45194553]Now we wait for people to think this means the world is going to end. Again.[/QUOTE]
Where's the fun in science if you can't accidentally open a portal to hell or trans-dimensional aliens, initiating Armageddon.
[QUOTE=Clavus;45198782]How would smashing atoms into each other really really hard help to (potentially) detect superpartners? What does 'breaking the symmetry' entail?[/QUOTE]
Correct me if I'm wrong, but I believe its by detecting the component parts emitted off from the collision. I.e. If you wanted to see if leptons are really compound particles or just their own units, you could smash em and see what comes out. (In a very crude sense).
Would a mass defect of the after-collision particles be a way of detecting superpartners? Or is that too simplistic?
[QUOTE=Clavus;45198782]How would smashing atoms into each other really really hard help to (potentially) detect superpartners? What does 'breaking the symmetry' entail?[/QUOTE]
Can't say I know much about the specifics of particle colliders, I'm no experimentalist at heart, but I can tell you a bit about symmetry breaking. Symmetry breaking is when a system [I]has[/I] a certain symmetry, but tends to settle in a state where we can't see it. The classic example is the Mexican hat potential (yes, that's what it's called):
[IMG]http://i57.tinypic.com/125ri86.jpg[/IMG]
The system is rotationally symmetric, when the ball is sitting at the peak, but it doesn't like to settle there. It prefers to settle with the ball somewhere in the valley, and we can't tell it's rotationally symmetric anymore. Similarly, nature might be supersymmetric, but we might be unable to see it below a certain energy.
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