|
November 2, 2011: CERN Experiment and Violation of Newton’s Second
Law Englishview
October 13, 2011: CERN Experiment and Violation of the Newton’s
Second Law Persianview
November 24, 2008: A New Definition of Gravitonview
July 10, 2007: Zero Point Energy and the Dirac Equationview
July 10, 2007: Zero Point Energy and the Dirac Equationview
June 28, 2007: Unification and CPH Theoryview
June 14, 2007: Summary of Physics Conceptsview
June 14, 2007: Strong Interaction and CPH Theory Rview
June 4, 2007: Quantum Electrodynamics and CPH Theoryview
November 30, 2006: Vocabulary of CPH Theoryview
November 17, 2006: Thermodynamic Laws Entropy and CPH Theoryview
November 17, 2006: Time Function and Absolute Black Holeview
October 14, 2006: CPH and Timeview
October 13, 2006: CPH Theory and Newton's Second Lawview
October 13, 2006: Time Function and Work Energy Theoremview
October 13, 2006: CPH Theory and Special Relativityview
October 13, 2006: Properties of CPHview
July 31, 2006: A New Mechanism of Higgs Bosons in Producing Charge
Particlesview
July 31, 2006: A New Mechanism of Higgs Bosons in Producing Charge
Particlesview
May 14, 2006: Speed of Light and CPH Theoryview
May 14, 2006: Speed of Light and CPH Theoryview
April 28, 2006: Color Charges Curve Spaceview
April 28, 2006: Color Charges Curve Spaceview
April 17, 2006: Effective Nuclear Chargeview
April 17, 2006: Effective Nuclear Chargeview
April 12, 2006: Maxwell's Equations in a Gravitational Fieldview
April 12, 2006: Maxwell's Equations in a Gravitational Fieldview
April 11, 2006: Realization Hawking - End of Physics by CPHview
April 7, 2006: Questions and Answers on CPH Theoryview
April 7, 2006: Opinions on CPH Theoryview
April 7, 2006: Opinions on CPH Theoryview
April 7, 2006: Questions and Answers on CPH Theoryview
March 23, 2006: Analysis of CPH Theoryview
March 23, 2006: Analysis of CPH Theoryview
March 21, 2006: Logical Foundation of CPH Theoryview
March 21, 2006: Definition Principle and Explanation of CPH Theoryview
March 21, 2006: Logical Foundation of CPH Theoryview
March 21, 2006: Definition Principle and Explanation of CPH Theoryview
March 21, 2006: Experimental Foundation of CPH Theoryview
March 21, 2006: Experimental Foundation of CPH Theoryview
March 19, 2006: Color Charge/Color Magnet and CPHview
March 19, 2006: Sub-Quantum Chromodynamicsview
|
|
|
|
|
|
More Faults Found in LHC, But
No Further Delay to Start-up |
|
| |
|
More Faults Found in
LHC, But No Further Delay to Start-up
Written by Ian
O'Neill
The LHC repairs are progressing
well (CERN)
In September 2008, the Large Hadron Collider (LHC)
suffered a catastrophic quench, triggered by a faulty connection in
the electronics connecting two of the supercooled magnets between
Sections 3 and 4 of the 27 km-circumference particle accelerator.
The "S34-incident" caused tonnes of helium coolant to explosively
leak into the LHC tunnel, ripping
the heavy electromagnets from their concrete mounts.
Naturally, this was a huge blow for CERN, delaying the first
particle collisions by several months. However, the repair work is
progressing well, and hopes are high for commencement of LHC science
as early as this summer. Now engineers are working hard to avoid a
recurrence of the S34 Incident, tracking down similar electrical
faults between the accelerator magnets. It
seems like they have found many more faults than expected
According to a recently published progress report, the LHC repairs
are progressing as planned, but more electrical faults have been
discovered in other sections of the accelerator. An electrical short
has been blamed for the quench four months ago, only weeks after the
first circulation of protons around the LHC in the beginning of
September 2008. It is now of paramount importance to isolate any
further potential shorts in the complex experiment. It would appear
engineers are doing a good job in tracking them down.
Ribbons of superconducting niobium-titanium wire is used by the LHC
to carry thousands of amps of current to the magnets. Connecting the
ribbon from electromagnet-to-electromagnet are splices that are
soldered in place. Should one of these splices be weakened by poor
soldering, an electrical short can occur, making the magnets lose
superconductivity, initiating a quench, rapidly heating the
sensitive equipment. Various sections are being re-examined and
re-soldered. The good news is that this additional work is not
compounding the delay any further.
It has been confirmed that there was a lack
of solder on the splice joint. Each sector has more than 2500
splices and a single defective splice can now be identified in
situ when the sector is cold. Using this method another magnet
showing a similar defect has been identified in sector 6-7. This
sector will be warmed and the magnet removed. The warm up of
this additional sector can be performed in the shadow of the
repair to sector 3-4 and will therefore not add any additional
delay to the restart schedule. CERN
Hopefully we'll see a second circulation of protons this summer, and
according to informal rumours
from a contact involved in the LHC science, the first particle
collisions could start
as early as October 2009. I
will listen out for any further official confirmation of this
information
Sources: CERN, Nature.com
Source: http://www.universetoday.com/2009/02/02/more-faults-found-in-lhc-but-no-further-delay-to-start-up/
Waiting for the Higgs Boson
Elizabeth Kolbert on
the Large Hadron Collider :
To theorists, the tantalizing promise of the L.H.C. is that it will,
finally, supply the evidence of new physics that theyve been
waiting for. Certain patterns of missing energy, for example, would
suggest the existence of extra dimensions, as would the creation of
mini black holes. Different resultsalso in the form of missing
energywould indicate the existence of squarks or other
superparticles. There are good theoretical reasons to expect these
phenomena to begin to appear at the energy level of the L.H.C., or
so at least Arkani-Hamed tried to explain to me over several more
espressos. He told me that he was completely confident the Higgs
would be found at the collider: I would bet many, many months
salary. He also said that if the Higgs was the only result, the
L.H.C. would be a disappointment. We theorists, were a hard lot to
please. Weve taken things for granted for so long we say, Oh,
yeah, for sure youll discover the Higgs. But the things were
really interested in are all these major puzzles.
Brian Greene talks
about the promise offered by LHC in finding the Higgs Boson:
where does mass itself come from?
More than 40 years ago, a number of researchers, including Peter
Higgs, an English physicist, suggested an answer: perhaps space
is pervaded by a field, much like the electromagnetic fields
generated by cellphones and radio broadcasts, that acts like
invisible molasses.
When we push something in the effort to make it move faster, the
Higgs molasses would exert a drag force and its this
resistance, as the Higgs theory goes, that we commonly call the
objects mass. Scientists have incorporated this idea as a
centerpiece of the so-called standard model a refined
mathematical edifice, viewed by many as the crowning achievement
of particle physics, that since the 1970s has described the
behavior of natures basic constituents with unprecedented
accuracy.
The one component of the standard model that remains stubbornly
unconfirmed is the very notion of the Higgs molasses field.
However, collisions at the Large Hadron Collider should be able
to chip off little chunks of the ubiquitous Higgs field (if it
exists), creating what are known as Higgs bosons or Higgs
particles. If these particles are found, the standard model,
more than a quarter-century after its articulation, will finally
be complete.
Its totally irrelevant, but I
enjoyed the bad
web design of the LHC site.
Compare toNASA and Fermilab.
Martin Schmaltz writes
another introduction.
Steven Hawking bets
that people wont find the Higgs boson, and that would make physics
even more interesting.
I get all gushy about big
science, if only because it is completely beyond my comprehension.
As I look through Wikipedia, its clear to me how often theoretical
possibilities inspire
great science fiction.
(See also this).
By the way, currently, LHC is down for repairs; expected to come
online again in July 2009. Wikipedia says it might take up to 3
years to gather enough data to prove or disprove the existence of
the Higgs boson.
Joel Aschenbach defends
basic science projects like LHC:
Some U.S. money has gone into the LHC, which will cost billions
of dollars: five, maybe tenthe exact number is elusive (the
science will be precise, but the accounting apparently follows
the Uncertainty Principle). But most of the engineering is being
done by European firms. Jrgen Schukraft, who supervises an LHC
experiment named ALICE (which will re-create conditions the same
as those just after the big bang), said, "The brain drain that
used to go from Europe to the States definitely has reversed."
The cynic might say that theres no practical use for any of
this, that there might be other uses for all the money and
brainpower going into these particle guns. But we live in a
civilization shaped by physics. We know that the forces within
an atom are so powerful that, unleashed and directed against
humanity, they can obliterate cities in an instant. The laptop
computer on which Im writing uses microprocessors that would
not exist had we not discovered quantum physics and the quirky
behavior of electrons. This story will be posted on the World
Wide Webinvented, in case you hadnt heard, at CERN, by
computer scientist Tim Berners-Lee. Maybe youre reading it
while listening to your iPod, which wouldnt exist but for
something called "giant magnetoresistance." Two physicists
discovered it independently in the late 1980s, with not much
thought of how it might eventually be used. It became crucial to
making tiny consumer electronics that used magnetized hard
disks. The physicists won a Nobel Prize in 2007, and you got a
nifty sound system thats smaller than a Hershey bar.
Source: http://www.imaginaryplanet.net/weblogs/idiotprogrammer/?p=83400287
|
|
|
|
|
|
|
|
|
@2003-2012 The CPH theory, All right reserved
|
