First LHC proton collisions postponed further
Large Hadron Collider needs until next summer to recover from a helium leak that shut the new atom smasher down in September
Web edition : Friday, December 5th, 2008
font_down font_up Text Size

The Large Hadron Collider, poised to become the world’s most powerful atom smasher, won’t reopen for business until the end of June at the very earliest, rather than in April as scientists had previously estimated. Actual collisions between protons might not occur until even later in the summer.

The accelerator was shut down in September after a faulty electrical connection between two magnets led to a leak of helium gas in a 3-kilometer section of the collider’s 27-km–long underground racetrack.

The electrical problem and leak affected magnets in the section and also scattered soot and chips of insulation material into the beam pipe, according to a report released December 5 by the European Organization for Nuclear Research, or CERN, which operates the collider and is based in Geneva. 

The accelerator is designed to collide beams of protons together at unprecedented energies of 14 trillion electron volts as a way to search for exotic elementary particles, including the invisible dark matter believed to make up most of the mass of the universe. The circular, underground tunnel in which beams will collide straddles the border between France and Switzerland.

Engineers have already removed 28 magnets from the affected tunnel section and brought them above ground, where the devices will either be cleaned or repaired. Another 25 magnets will be hauled up by the end of December.

The electrical short contaminated beam pipes with soot. The pipes must now be replaced or cleaned. Inspectors have found chips of insulating material in the beam pipe at large distances from the leak, but these can be removed by simple vacuuming.

In a more time-consuming effort, engineers will also increase the number and size of pressure release valves throughout the underground accelerator, in order to minimize damage from any helium gas leaks that might occur in the future.  

Given the time needed for  final pressure tests and for cooling down to the operating temperature of 1.9º above absolute zero the repaired section won’t be ready to receive proton beams until late June. But the first collisions might not happen until some time later in the summer, says James Gillies, spokesman for the LHC at CERN. It’s possible, he adds, that CERN may be conservative and not collide proton beams at their maximum possible energy in 2009. Running the beams at lower energies presents less risk of triggering an electrical short, Gillies says.


Found in: Atom & Cosmos and Matter & Energy
Comments 6
  • Interesting article!

    ---------------------
    http://www.anubis-sub.ru/
    arhey sogsok arhey sogsok
    Apr. 29, 2009 at 8:29am
  • The mad CERN ’s project.

    In 1906, Rutherford studied internal structure of atoms,
    bombarding them with high energy a- particles.
    This idea helped him understand the structure of atom.
    But the clever Devil interfered and gave advice to physicists
    to enlarge the target. Bomb them!
    And physicist created huge cannon-accelerators of particles.
    And they began to bomb micro particles in the vacuum, in hoping
    to understand their inner structure. And they were surprised with
    the results of this bombing. Several hundreds of completely new
    strange particles appeared. They lived a very little time and do not
    relate to our world. Our Earth needs its real constants of nature.
    But this was forgotten.
    What God carefully created, is destroyed in accelerators.
    And they are proud of that. They say: we study the inner structure
    of the particles. The clever and artful Devil is glad. He again has deceived man.
    Physicist think, that an accelerator - is first of all the presence of huge energy.
    And the Devil laughs. He knows, that an accelerator - is first of all the Vacuum.
    But this, he has withheld from man.
    He has not explained that the Vacuum is infinite and inexhaustible.
    And in infinity there is contained an infinite variety of particles.
    And by bombing the vacuum, one can find centaurs and sphinxes.
    But my God, save us from their presence on Earth.
    ========= .. ========.
    Rutherford was right.
    His followers are mistaken.
    Why?
    Imagine, that I want to plant a small apple- tree.
    For this purpose I shall dig out a hole of 1 meter width and 1,20 m depth.
    It is normal.
    But if to plant a small apple- tree, I shall begin to dig
    a base for a huge building (skyscraper),
    or if to begin drill ground with 10 km. depth,
    will you call me a normal man?
    ========== .. ===============.
    Imagine a man who breaks watches on the wall.
    And then he tries to understand the mechanism of the watches
    by thrown cogwheels, springs and small screws.
    Does he have many chances to succeed?
    As many as the scientists have who aspire to understand
    the inner structure of electron by breaking them into accelerators.
    If not take into account the initial conditions of Genesis,
    the fantasies of the scientists may be unlimited.
    ========== . ======== .
    The Nature works very economical.
    For example, biologists know 100 ( hundred ) kinds of
    amino acids. But only 20 ( twenty) kinds of amino acids
    are suitable to produce molecules of protein, from which all
    different cells created on our planet. What are about another
    80 % of amino acids? They are dead end of evolution.
    The physicists found many ( 1000 ) new elementary particles in
    accelerators. But we need only one ( 1) electron and one (1 )
    proton to create first atom, to begin to create the Nature.
    All another elementary particles (mesons, muons , bosons, taus,
    all their girlfriends - antiparticles, all quarks and antiquarks…etc)
    are dead end of evolution.
    ============.
    What was before - “ the big bang” or the vacuum ?
    The physicists created “ Europe’s Large Hadron Colider “
    Please, look at how our physicists made this accelerator.
    They made the vacuum and after they generated a big reaction
    between two colliding particles in some small imitation of the
    “big bang”. They didn’t make this process in the reverse.
    So, what was prior in the Universe: “ big bang” or vacuum?
    ===========================..
    The Universe as whole is Vacuum, first of all.

    Best wishes.
    Israel Sadovnik. / Socratus.

    http://www.socratus.com
    http://www.wbabin.net
    http://www.wbabin.net/comments/sadovnik.htm
    http://www.wbabin.net/physics/sadovnik.pdf
    ====================..
    P.S.

    Will CERN find the God - Particle?
    Hawking bets CERN will not find the God Particle

    http://www.physorg.com/news140161003.html
    ================..
    israel socratus israel socratus
    Dec. 12, 2008 at 1:28pm
  • Article by Ivan Gorelik.

    What will LHC give us:
    the particle of God, or magnetic trap of Devil?

    Magnetic trap is an axial-symmetric magnetic analogue of a black hole.
    It is 10^36 stronger than gravitational black hole.
    CERNs specialists do not know about the magnetic trap yet. If
    microscopic magnetic trap will be made in CERN's LHC, the Earth
    will be transformed into an infinitely thin emptiness, surrounded
    by circular current of 6 meter radius. Compare: Schwarzschild radius
    of such mass is 0,009 meters.
    Minimal possible magnetic trap has mass, which is equivalent to
    1 TeV, or about 1055 masses of neutrons. It has magnetic field,
    which is equal to 3*10^16 teslas. Magnetic trap is a magnetic dipole,
    which can be imagined as an infinitely thin coil, creating the critica
    magnetic field.
    Neutrons are smallest neutral magnets and they can be captured by
    magnetic trap, ejecting neutrino. Protons are also magnets and they
    can also be captured by the trap, ejecting positrons. Neutrons and
    protons are fermions, but after neutrino or positron ejection, they
    become bosons, - the quanta of stationery magnetic field of neutron
    hole.
    Half of mass of captured particles goes to the energy of ejected
    particles, and the second half goes to the magnetic trap’s magnetic
    field. As a result of particle capture the radius of magnetic trap
    becomes bigger. It looks as widespreading magnetic soliton.
    If magnetic trap of Devil will be made on collider, if the process of
    it’s growth will be slow (months, years), you will cry from pane, and
    your aggression towards big-bangers, who had made the experiment,
    will be much more, than mine aggression now. You will want to
    cut sir Hawking and other crazy big-bangers on small pieces.
    Now I am forced to convince the prosecutor’s department to open the
    criminal case against Rubakov V.A. If you will make the same in your
    countries against arrant big-bangers, we will survive. Otherwise we’ll
    die, with probability about 50%.
    Only crazy people can try to create particles with the rest mass more
    then 1000 masses of nucleon. It is possible that in the region from
    1000 to 7000 aum, there can be created hundreds types of particles and
    resonances. It is clear, that the most of them will decay. But some of
    them will grow, capturing the ordinary matter.
    Different types of growing particles will work on different forces,
    and on combinations of forces.
    I hope that mBHs, connected by gravity force, are impossible and safe.
    But magnetic traps are 10^36 stronger, and they are the most probable
    candidates to explain the majority of cosmic catastrophes – novae,
    supernovae... I had understood this only this September.
    Academician Migdal wrote 30 years ago about pion condensation in
    strong fields. As a result he had come to conclusion that neutron
    stars can have any masses. My approximate computation shows that
    the minimal possible neutron star has a mass, equal to 1055 masses
    of nucleons, and such embryo of neutron star can by made in collider.
    A month ago the article were published that new strange unexpected
    particle was discovered at Tevatron. It decays at several muons, up to
    eight units. Somebody had already named it the Halloween particle. I
    named it the muon hole.
    What will be made the next, the magnetic trap of Devil? It will not
    decay, but it will transform us into it’s magnetic field.
    Those persons, with high ranks and high scientific degrees, who cry
    about the safety of LHC must be arrested now, because they are
    committing the global terrorist crime now.
    Stop Tevatron and close the LHC. Throw out big-bangers from
    universities. Big Bang never was. The Universe is ever young.
    Hubble constant (H, Hbar) is the mirror reflection of Plank
    constant (h, hbar). These both constants are describing the 4d-rotation
    on opposite scales relatively us. Precise value of Hubble constant you
    can find on my web-site. http://darkenergy.narod.ru/ That is my Steady
    State model of Universe. I worked with this model more than 30 years,
    and I did not receive any cent for my work. And now big-bangers want
    to kill me, my children, and all of you. Big-bangers want to touch the
    particle of God, but thus, they lead all of us into the magnetic trap
    of Devil.

    / Ivan Gorelik /.
    israel socratus israel socratus
    Dec. 12, 2008 at 1:23pm
  • My own concerns are more mundane and functional than the heated and bipolar contentiousness as exhibited above. The LHC seems designed with very poor compartmentalization and access to systems which are intrinsically complex. The Machine which is LHC is a Colussus and mightily impressive but it seems that it will suffer the slings and arrows of operational misfortune none too well. My greater concern is the enormous complexity of the two most massive detectors which are virtually impenetrable to technicians should they suffer even a minor operational issue. I wish CERN well and I hope that some provision is being made to increase functional access for the surely inevitable malfunctions yet to come. The Higgs boson will not go gently into that good night.
    Thomas  Barton, J.D. Thomas Barton, J.D.
    Dec. 9, 2008 at 9:15pm
  • I have referred to the links offered in the previous...um..."comment" and after thus perusing have arrived at the following conclusion:

    I am so glad I have enough of a solid, scientific background that I am able to make informed opinions on my own and don't have to rely on laymen or pseudo-scientists telling me what my opinions should be.

    For those interested in actual science of the subject, rather than the uninformed "Chicken Little" arguments below, I refer to this paper:

    http://arxiv.org/abs/0807.3349 Click on the PDF link to read the paper in its' entirety.

    There are many other papers of this nature, clearly deliniating the mathematics, methodology and science involved at arriving at certain conclusions--far preferable to the "We're all gonna die!" scenarios of the pseudo-scientists.
    Alan McCright Alan McCright
    Dec. 8, 2008 at 2:59pm
  • Man's technology has exceeded his grasp. - 'The World is not Enough'
    ("I'm slightly irritated, because this non-story is symptomatic of a larger mistrust in science, particularly in the US, which includes things like intelligent design. Anyone who thinks the LHC will destroy the world is a twat." Arrogant, deluded douchebag and CERN spokesmodel, Brian Cox.)
    (September 19, 2008 - 'LHC loses liquid helium' - PhysicsWorld.com: "The Large Hadron Collider (LHC) has lost up to a tonne of liquid helium after some of its superconducting magnets inadvertently heated up this morning, physicsworld.com has learnt. A log entry written by the current LHC co-ordinator at 11:27 am CET (10:27 am BST) states that there has been a "massive quench" in sector 3–4. Quenches occur when superfluid helium in the magnets rises above its operating temperature of 1.9 K, and can be caused, for example, when a proton beam veers off course.")
    (September 24, 2008 - 'LHC on hold until spring of 2009' - PhysicsWorld.com: "The magnet failure last week at the Large Hadron Collider (LHC) means that the accelerator will not be up and running again until early spring of 2009, say officials at CERN. To keep the project on schedule, the team running the accelerator near Geneva have decided to skip a planned test run at an intermediate energy and re-start the LHC in 2009 at the full beam energy of 7 TeV.") And begin creating Black Holes.
    Zealous, jealous, Nobel Prize hungry Physicists are racing each other and stopping at nothing to try to find the supposed 'Higgs Boson'(aka God) Particle, among others, and are risking nothing less than the annihilation of the Earth and all Life in endless experiments hoping to prove a theory when urgent tangible problems face the planet. The European Organization for Nuclear Research(CERN) new Large Hadron Collider(LHC) is the world's most powerful atom smasher that will soon be firing groups of billions of heavy subatomic particles at each other at nearly the speed of light to create Miniature Big Bangs producing Micro Black Holes, Strangelets, AntiMatter and other potentially cataclysmic phenomena as described below.
    Particle physicists have run out of ideas and are at a dead end forcing them to take reckless chances with more and more powerful and costly machines to create new and never-seen-before, unstable and unknown matter while Astrophysicists, on the other hand, are advancing science and knowledge on a daily basis making new discoveries in these same areas by observing the universe, not experimenting with it and with your life. Einstein used Astronomy to prove his landmark general theory of relativity that, ironically, decribes, among other things, the Black Holes which the LHC is designed to produce at the hoped for rate of one per second.
    The LHC is a dangerous gamble as CERN physicist Alvaro De Rújula in the BBC LHC documentary, 'The Six Billion Dollar Experiment', incredibly admits quote, "Will we find the Higgs particle at the LHC? That, of course, is the question. And the answer is, science is what we do when we don't know what we're doing." And CERN spokesmodel Brian Cox follows with this stunning quote, "the LHC is certainly, by far, the biggest jump into the unknown."
    The CERN-LHC website Mainpage itself states: "There are many theories as to what will result from these collisions,..." Again, this is because they truly don't know what's going to happen. They are experimenting with forces they don't understand to obtain results they can't comprehend. If you think like most people do that 'They must know what they're doing' you could not be more wrong. Some people think similarly about medical Dr.s but consider this by way of comparison and example from JAMA: "A recent Institute of Medicine report quoted rates estimating that medical errors kill between 44,000 and 98,000 people a year in US hospitals." The second part of the CERN quote reads "...but what's for sure is that a brave new world of physics will emerge from the new accelerator,..." A molecularly changed or Black Hole consumed Lifeless World? The end of the quote reads "...as knowledge in particle physics goes on to describe the workings of the Universe." These experiments to date have so far produced infinitely more questions than answers but there isn't a particle physicist alive who wouldn't gladly trade his life to glimpse the "God particle", and sacrifice the rest of us with him. Reason and common sense will tell you that the risks far outweigh any potential(as CERN physicists themselves say) benefits.
    This quote from National Geographic, "The hunt for the God particle", exactly sums this "science" up: "If all goes right, matter will be transformed by the violent collisions into wads of energy, which will in turn condense back into various intriguing types of particles, some of them never seen before. That's the essence of experimental particle physics: "You smash stuff together and see what other stuff comes out." Read about the "other stuff" below;
    http://www.SaneScience.org
    http://www.risk-evaluation-forum.org/anon6.htm
    http://www.LHCFacts.org/
    http://www.LHCDefense.org/
    http://www.LHCConcerns.com/
    Popular Mechanics - "World's Biggest Science Project Aims to Unlock 'God Particle'" - http://www.popularmechanics.com/science/extreme_machines/4216588.html"

    SaneScience Org SaneScience Org
    Dec. 6, 2008 at 10:02pm
Post a comment

Please login or register to participate.


Advertisement
Suggested Reading:
seperator
Reader Favorites:
seperator
SN on the Web:
seperator