World's largest particle accelerator built by the CERN (European Organization for Nuclear Research) on the Franco-Swiss border near Geneva, Switzerland. It is designed to collide beams of protons with a centre of mass energy of up to 14 TeV. It contains the large detectors ALICE, ATLAS, CMS and LHCb.
Questions tagged [large-hadron-collider]
435 questions
11
votes
3 answers
How do they handle energy in magnets at LHC?
I'm guessing that when the LHC ramps up to 4000 GeV this means they are increasing the current in the superconducting magnets as RF fields accelerate the beams. Where does this current go when they ramp down? Is it dissipated as heat? Is it fed…
avhays
- 111
7
votes
2 answers
What will be the goal of (V)LHC after receiving upgrades?
If I understood correctly, the LHC will be shut down at the end of 2012 to prepare for the full-power, 14 TeV collisions in 2014. I also remember reading about a proposed luminosity upgrade some time in 2019 and also about a preliminary plan for…
Jakub Lédl
- 71
6
votes
1 answer
LHC: Clumps of protons or continuous stream?
I am curious about the Large Hadron Collider and whether the proton (anti-) beams are clumps of protons (grouped together) or are they roughly equally distributed around the circumference of the ring.
The motivation for my question comes from…
K7PEH
- 1,577
6
votes
1 answer
What's the next big goal of the Large Hadron Collider?
Obviously, physics lovers everywhere were excited at the announcement that the LHC had verified the existence of the Higgs Boson. As a non-physicist, I like to keep up with what I can regarding the latest developments (that laymen can appreciate).…
user28375028
- 905
4
votes
2 answers
What are the AFS values in the Atlas experiment?
If you go to the Atlas experiment http://atlas.ch/ and click the status button, there's an AFS reading at the bottom with a current value
50ns_228b+1small_214_12_180_36bpi_8inj
The 50ns seems to refer to the bunch spacing, the 228b the number of…
Larry Harson
- 5,278
2
votes
1 answer
Why is the tunnel cold in LHC?
Particle accelerators such as the LHC work by accelerating electrons
or protons close to the speed of light in opposing directions through
an incredibly cold tunnel, until they eventually smash into each
…
inf3rno
- 1,079
2
votes
2 answers
What were the maximal collision energy of the LHC if it were rewired to $e^{-}-e^{+}$ collisions?
Yes, I know, that it weren't a large hadron collider then.
No, I don't think, that the creators of the LHC didn't know what they do.
I am just curious.
How could it be calculated? A such rewiring of the LHC (also, making it capable to work with…
peterh
- 8,208
1
vote
0 answers
LHC observables that gives you the number of Jet Constituents
What is the name of a observable in LHC that will somehow count the number of constituents of a jet. Say the number of neutral or charged constituents of a jet.
King Meruem
- 171
- 8
1
vote
1 answer
Does the LHC Beam Dump experience deceleration forces, or only heat?
When the proton beam is dumped into the beam dump, will the dump actually experience the deceleration force of a 200 mph freight train that is being stopped to a standstill in about a microsecond?
If yes, that must be millions of tons of force.
Or…
David.P
- 111
1
vote
3 answers
LHC vacuum tube diameter
What's the diameter of the tube where the protons fly around? I dont mean the overall diameter (~1-10 m), instead the inner most ultra-high vacuum tube where the protons are. The inner pipe, the capillary, the channel.. I would guess maybe 1 mm?
TMOTTM
- 625
0
votes
1 answer
Sum of momenta of two protons in LHC
Sum of momenta of two protons in LHC moving in opposite directions is assumed to be zero but it can't be exactly zero so how close does it get to zero?
Some Student
- 1,297
- 4
- 22
0
votes
2 answers
If you could look at the LHC beam, what would you see?
Kind of a weird question compared to what I normally ask on here, but I've been wondering about this for a while.
Does the LHC beam generate any photons within the visible light spectrum? Assuming the beam was traveling through air instead of a…
Nick
- 2,949
0
votes
1 answer
Could pp Collisions in the LHC produce Gravitons?
Could proton-proton Collisions in the LHC produce Gravitons?
Ken Abbott
- 335
0
votes
1 answer
how to make a collider high luminosity?
Exactly what procedures are followed to increase the luminosity of a particle collider? Say when LHC increases its luminosity, does it increase the number of protons per bunch? If yes, then how?
siddhartha
- 99
0
votes
1 answer
Hadron Supercollider - How does smashing protons reveal facts of the inception of our universe?
How does smashing protons at high velocity reveal how our universe was formed? At some point, wouldn't the atoms need to come together in order to form planets etc? I am a curious student- not a physicist.
