What is Lhc: Definition and 327 Discussions

The Large Hadron Collider (LHC) is the world's largest and highest-energy particle collider. It was built by the European Organization for Nuclear Research (CERN) between 1998 and 2008 in collaboration with over 10,000 scientists and hundreds of universities and laboratories, as well as more than 100 countries. It lies in a tunnel 27 kilometres (17 mi) in circumference and as deep as 175 metres (574 ft) beneath the France–Switzerland border near Geneva.
The first collisions were achieved in 2010 at an energy of 3.5 teraelectronvolts (TeV) per beam, about four times the previous world record. After upgrades it reached 6.5 TeV per beam (13 TeV total collision energy, the present world record). At the end of 2018, it entered a two-year shutdown period for further upgrades.
The collider has four crossing points, around which are positioned seven detectors, each designed for certain kinds of research. The LHC primarily collides proton beams, but it can also use beams of heavy ions: lead–lead collisions and proton–lead collisions are typically done for one month per year. The aim of the LHC's detectors is to allow physicists to test the predictions of different theories of particle physics, including measuring the properties of the Higgs boson and searching for the large family of new particles predicted by supersymmetric theories, as well as other unsolved questions of physics.

View More On Wikipedia.org
Recent contents Top users
  1. T

    What would happen if I was standing in the LHC

    What would happen if I was standing in the LHC and I was hit by a (one) proton traveling at 99.999991% the speed of light. Would the collision burn a hole in me? or would it simply be going so fast that it passes through me without interacting with the particles in my body?
  2. stevebd1

    Energy & Time Dilation in Large Hadron Collider (LHC)

    Due to the blogs being removed, I thought it might be worthwhile posting a few in the forums-The Large Hadron Collider has produced collisions at 7 TeV. For collisions at 7 TeV, protons need to be ‘ramped’ to 3.5 TeV, the proton has a mass of 1.6726e−27 kg which, according to mass–energy...
  3. Greg Bernhardt

    'I Want To Do Theoretical Physics'

    Author: ZapperZ Originally posted on Mar12-14 I see that statement surprisingly often enough on the Academic Guidance forum. I also hear this often whenever I talk to high school students who are interested in doing physics, or even new undergraduate students thinking of majoring in physics...
  4. C

    How much energy would it take

    to accelerate a macroscopic object to the speeds reached by protons at the LHC? want to accelerate an object the size of the ISS to the speed of subatomic particles in a collider. I would like to know how much energy would be required.
  5. Safinaz

    LHC and constrains on heavier Higgs bosons

    Hi all, I wonder if I study new Higgs scalars, How the data of the LHC for searching for heavier scalars in h-> WW->lvlv and h -> ZZ-> 4 l channels like in [arXiv:1304.0213] can make constrain on my study for the new Higgs? How a figure like figure 2 can give constrains on my model free...
  6. Safinaz

    Constrains on new Higgs scalars from LHC recent data

    Hi all, I wonder if I study new Higgs scalars, How the data of the LHC for searching for heavier scalars in h-> WW->lvlv and h -> ZZ-> 4 l channels like in [arXiv:1304.0213] can make constrain on my study for the new Higgs? How a figure like figure 2 can give me data for my model...
  7. T

    Why are time dilatation & length contraction infinite at light speed?

    Considering that speed of light is constant and finite, then why are the time dilatation and length contraction infinite to a frame of reference moving at the speed of light? We know that a moving frame of reference experiments time dilatation and length contraction from the point of view of a...
  8. Safinaz

    How can I become a science writer?

    Hi guys, I started to write articles in science, especially high energy physics and LHC news, I made a facebook page but still my friends only see it, so have you any suggestions about any journals or websites accept articles from beginners .. Also any suggestions for me to make this...
  9. T

    Is Higgs Boson Theoretical or Hypothetical?

    I had an argument at my university about it, since experiments at LHC aren't 100% confirmed. I mean, gauge theories are.. theories and Goldstone bosons are theorems. Someone share some light plese?
  10. G

    When are temperature effects included in collisions?

    When a proton collides with a proton say at the LHC, is vacuum field theory used? It seems like you shouldn't have to include temperature effects since there are only two particles. But then again, all experiments take place at finite temperature, the ambient temperature of the room? When a...
  11. Q

    Lorentz contraction in circular particle accelerators

    My question is essentially a variation of the Ehrenfest paradox in SR. But hopefully with some experimental data. In the LHC, for example, a fixed number of particle bunches with some length are injected into the main ring. Now, as the velocity of the particles increases, the bunches would be...
  12. nuclearhead

    Idea for an internal scanner using natural radioactivity

    Here is an idea I had for a way to deduce the internal structure of an organic object using it's natural radioactivity. The set-up is an array of gamma ray detectors located circularly around the object. By detecting both the position and direction of the gamma rays (obviously impossible to get...
  13. putongren

    Constructing an artificial blackhole

    I have this crazy and goofy dream to construct an artificial black hole. Not a crude analogue, but the actual astronomical object. Would that entail using a particle accelerator to accelerate particles to huge velocities, gaining mass, and then smashing together and then turning into a black...
  14. R

    How much energy is needed to manipulate the Higgs field?

    Hi everyone, So I've been wondering how much energy does it takes to impart some kind of effect on the higgs field. I've been trying to look for the energy the LHC generates and compare it to the actual amount of energy that it takes for the higgs field to be affected, but since this is all new...
  15. 1

    Is it Possible to Spin an Atom without Breaking it Apart?

    i mean, people are creating LHC to split the atoms, but why don't we just spin it? spin in in high speed and see if a quark/photon/electron would break can we not do that? is it mathematically impossible to have a mass in the center of rotation?
  16. Safinaz

    Recent Higgs searches at the LHC

    Hi all, Have anyone idea about the recent Higgs searches at the LHC ? I mean after finding the SM Higgs , is there now any trials to find another Higgs ? or just now they are confirming and rechecking data, for example if the newly discovered Higgs is the SM one or " SM- like Higgs"...
  17. Safinaz

    Explaining the Discrepancy of W+2jets Signals at Tevatron

    Hi all, In 2011 CDF experiment at Tevatron announced that they had reported W+2jets signal excess for 2 jets mass range around Mjj ~ 150 GeV but D0 experiment didn't see this signal anomaly using the same criteria. So have anyone an idea or recent reference how this discrepancy had...
  18. wolram

    Is Supersymmetry Dead? | Sciencenews.org

    https://www.sciencenews.org/blog/context/it%E2%80%99s-too-soon-declare-supersymmetry-tragedy I have just been reading this and it seems to me another layer of complexion is needed to keep the theory alive. http://arxiv.org/ftp/arxiv/papers/1308/1308.4768.pdf Abstract The first three...
  19. L

    Exploring Quark Collisions: Experiments & Results

    Hello to all. I have a pretty general question. Hopefully it will require a somewhat technical answer. My question is this. Has there been any experiment where quarks have been smashed together? Perhaps at the lHC or Fermi. The other day I was told about such an experiment where two quarks were...
  20. J

    Supersymmetry - current status

    I wanted to ask wheter there is any progress when it comes to SUSY. Since LHC didn't find any superpartners and LUX found no neutralinos how much space does SUSY have left? I mean it can be fine tuned but that can't be done forever right? Or is there something I don't know that improves...
  21. A

    Gravitational or inertial mass gain in cern ?

    Hi, I have been reading about CERN for a while and found amazing - amongst many other things - the fact that hadrons in the LHC turn some of their energy to mass after having reached the maximum possible speed. However this statement was not clear enough. I was wondering whether the mass they...
  22. R

    Spin of Particles Detected at LHC: Higgs Boson and Supersymmetry

    I tried searching through but didn't find this asked. If the spin of the particle detected at LHC comes back as 2, for instance, does it mean it's not a higgs boson? There are 5 higgs in supersymmetry, do they all have spin 0?
  23. A

    The Mystery of Mass & Charge: LHC Experiments

    Biggest problem which LHC is worried about is knowing how mass is related to particles.does this mean that physical significance or understanding about charge is discovered.? If yes,what charge is.? If No,why scientists are not concerned to know about what fundamental charge is by conducting...
  24. K

    Searching for Microscopic Black Holes in the LHC

    Have we ever observed microscopic black holes in the LHC?
  25. Vanadium 50

    What's the Latest Music Video from the LHC?

    What the title says...
  26. S

    News Why wouldn't the LHC break on queue?

    Just watching the live feed from the LHC and as if the black hole it was meant to create was speaking to us, it broke on queue. Seriously..is this thing not the biggest piece of junk ever invented? Obviously it is complicated beyond the scope of this forum..but with scientists studying it for...
  27. S

    Exploring LHC Experiments: 7 TeV vs. 3.5 TeV Collisions and Relativistic Effects

    I know they are going to be doing experiments where they send two 7 TeV beams in opposite directions and observe collisions but do they send two beams, one 7 TeV and one 3.5 TeV, in the same direction and observe collisions? How would these results differ? We should see relativistic effects...
  28. G

    LHC Beam Energies: Highest Possible Energy

    What is the highest possible energy per beam that the LHC can handle?
  29. marcus

    19 March LHC gets 3.5 TeV in both beams, a first.

    http://www.math.columbia.edu/~woit/wordpress/?p=2819 ==quote== High Energy Beams at the LHC At 5:23 am in Geneva this morning, for the first time the two LHC beams were ramped up to high energy, the 3.5 TeV/beam that they plan to run at for the next two years. These are the highest energy (per...
  30. C

    When does the LHC find out if higgs boson exist?

    when is the LHC find out if higgs boson excist?
  31. Demystifier

    LHC First Results: Summary and Analysis

    http://www.springerlink.com/content/t35h6211438476k0/fulltext.pdf http://www.physorg.com/news185649606.html
  32. B

    Is the Higgs Boson Necessary if Lorentz-Fitzgerald Accounts for Mass Increase?

    sqrt(1-v2/c2) About matter and mass... I've been thinking that if the Lorentz-Fitzgerald contraction equation can accurately calculate an increase in inertial mass (without anything representing the Higgs Field), is there any need for the Higgs Boson? Doesn't the LF equation imply that...
  33. marcus

    Zeptospace Odyssey-looks like the first witty LHC book

    Zeptospace Odyssey---looks like the first witty LHC book Amazon let's you browse an ample sample of this new hip HEP book. It's a fun book about fundamental physics with characters and anecdotes going back to Bohr and brought up to the Large Hadron minute. Gian Francesco Giudice is a CERN...
  34. H

    Exploring the LHC in Switzerland

    If I were to make it to Switzerland on my own (maybe as part of a business trip, followed by a few days off ...) would it be possible to tour the collider?
  35. M

    No mini b/h at LHC because h/e/p collide with earth every day?

    I'm not fully able to comprehend the argument that allegedly proves, that no mini b/h can emerge at CERN - that we witness collions at higher energies everyday and no b/h has occurred so far - besides the prediction that such objects would immediately decay and disintegrate because of...
  36. marcus

    Kat rap proves LHC bh will not swallow earth.

    Alpine Kat has a new rap video. Her first one "LHC Rap" was a great success, so you might want to view the sequel, called "Black Hole Rap". Here is "LHC Rap" As you may recall, the first voice you hear on this one sounds like Stephen Hawking. Could well be. I think he is in the credits.
  37. jal

    LHC First Physics: Press Release & Info

    The following link gives the press release. http://press.web.cern.ch/press/lhc-first-physics/ Are there links to the papers that will be published? Will they come from different centers or from CERN? Will Physic forums use one thread to gather that info? jal
  38. rhody

    US Institutions Participating in LHC Experiments and Accelerator

    http://www.uslhc.us/The_US_and_the_LHC/Collaborating_Institutions/Institutions_by_Project#alice" A comprehensive list of all US Universities participating in the LHC Project, institutions marked with a blue arrow (47 total) have contributed to design/installation of hardware and software to...
  39. W

    Exploring the LHC: The Proton-Proton Collider and Its Purpose

    Hi, I was wondering: why is the LHC a proton-proton collider and not a proton-antiproton collider? Has it a theoretical reasons or is it just for practical reasons? Thanks, Ward
  40. T

    A bunch of LHC relativity questions

    Hello all. First time posting here. I have a basic understanding of special relativity and I have few questions about what the Large Hadron Collider (LHC) looks like to a proton going around inside it. As I thought more and more about it the few questions turned into a bunch of questions...
  41. N

    Is the existence of strangelets predicted by the standard model?

    Does anyone know what the probability of creating a strangelet in the LHC would be? Do all applications of QM predict the possibility of a strangelet? Is a strangelet a strong prediction in the (SM) or kind of like a wormhole(this might be a bad example for some) - a sort of fuzzy prediction...
  42. J

    Realistic initial timeline for LHC

    What is a realistic timeline for the LHC initial experiments? ie. with a machine this massive and complicated, how long does it take experimenters to get to know the detector and backgrounds (I've heard many a theorist complain about how the experimentalists still don't use next-to-leading-order...
  43. marcus

    1070 GeV in a single beam at LHC, topping Tevatron

    Woit's blog just reported "A few minutes ago, one of the beams of the LHC was ramped up to an energy of 1180 GeV, besting the Tevatron’s top beam energy of 980 GeV. Update: Actually the beam was lost at 1070 GeV, which is still a record high energy."...
  44. N

    Are There Weekly Podcasts Focused on LHC Updates?

    I was subscribed to the cern podcast but they only have 12 episodes. Anyone know of any other podsCASTS on the LHC that have updates weekly?
  45. M

    Can Particles Stretch in a Particle Accelerator?

    Hi all, Just a lay person here with a healthy interest and a quick question:- In a particle accelerator, as the particle 'beams' are accelerated, can it be said that the particle occupies more length along it's path as it's velocity increases. Is it possible that a particle could 'stretch'...
  46. marcus

    First pictures of LHC collision events at CMS detector

    http://cmsdoc.cern.ch/cms/performance/FirstBeam/pictures221109/CollisionEvent.png Garrett Lisi has mirrored the official site, in case of any problems with accessibility. http://sifter.org/~aglisi/albums/LHCfirstcollisions.png
  47. rhody

    Beyond LHC: NewScientist: by Jessia Griggs

    Beyond LHC: NewScientist: by Jessica Griggs http://www.newscientist.com/article/mg20427354.900-future-colliders-beyond-the-lhc.html" Possible Particle Detection categories: Higgs ? Complex Higgs ? Evidence of Supersymmetry ? Gravitons ? Particles associated with String Theory ? New...
  48. Vanadium 50

    LHC Re-establishes Circulating Beams at CERN

    Last night the LHC re-established circulating beams. CERN has issued a http://press.web.cern.ch/press/PressReleases/Releases2009/PR16.09E.html" .
  49. X

    New LHC monitoring portal LIVE DATA

    I have setup a very cool LIVE portal to the LHC and CERN... I have have a brand new forum just for the LHC.. http://www.lhcportal.com/
  50. G

    A layman a bit scared of the LHC (as always)

    Hello there, I've been here before to ask for help with my fears about the LHC a while ago. Suffice to say I eventually overcame them thanks to the help from some members of this forum and that of Michaelangelo Mangano of CERN. However recently I've decided to revisit the old LHC Defense forums...
Back
Top