Dakle, priblizava se dugo ocekivani dan za fiziku cestica. LHC ce biti pucten u rad 10 septembra uz direktan prenos na kanalima Evrovizije. Dole je prilozen ceo izvestaj (na engleskom).
Ja trenutno nemam vise vremena, ali cu se potruditi da komentarisem kasnije.
Link sa nekoliko Yuotube-ova
******************************************
Source: CERN
Content: Press Release
Date Issued: 7 August 2008
*******************************************
CERN announces start-up date for LHC
Geneva, 7 August 2008. CERN* has today announced that the first
attempt to
circulate a beam in the Large Hadron Collider (LHC) will be made on 10
September. This news comes as the cool down phase of commissioning
CERN's
new particle accelerator reaches a successful conclusion. Television
coverage of the start-up will be made available through Eurovision.
The LHC is the world's most powerful particle accelerator,
producing beams
seven times more energetic than any previous machine, and around 30
times
more intense when it reaches design performance, probably by 2010.
Housed
in a 27-kilometre tunnel, it relies on technologies that would not
have
been possible 30 years ago. The LHC is, in a sense, its own prototype.
Starting up such a machine is not as simple as flipping a switch.
Commissioning is a long process that starts with the cooling down
of each
of the machine's eight sectors. This is followed by the electrical
testing
of the 1600 superconducting magnets and their individual powering to
nominal operating current. These steps are followed by the powering
together of all the circuits of each sector, and then of the eight
independent sectors in unison in order to operate as a single machine.
By the end of July, this work was approaching completion, with all
eight
sectors at their operating temperature of 1.9 degrees above
absolute zero
(-271°C). The next phase in the process is synchronization of the
LHC with
the Super Proton Synchrotron (SPS) accelerator, which forms the
last link
in the LHC's injector chain. Timing between the two machines has to be
accurate to within a fraction of a nanosecond. A first synchronization
test is scheduled for the weekend of 9 August, for the
clockwise-circulating LHC beam, with the second to follow over the
coming
weeks. Tests will continue into September to ensure that the entire
machine is ready to accelerate and collide beams at an energy of 5
TeV per
beam, the target energy for 2008. Force majeure notwithstanding,
the LHC
will see its first circulating beam on 10 September at the injection
energy of 450 GeV (0.45 TeV).
Once stable circulating beams have been established, they will be
brought
into collision, and the final step will be to commission the LHC's
acceleration system to boost the energy to 5 TeV, taking particle
physics
research to a new frontier.
'We're finishing a marathon with a sprint,' said LHC project leader
Lyn
Evans. 'It's been a long haul, and we're all eager to get the LHC
research
programme underway.'
CERN will be issuing regular status updates between now and first
collisions. Journalists wishing to attend CERN for the first beam
on 10
September must be accredited with the CERN press office. Since
capacity is
limited, priority will be given to news media. The event will be
webcast
through http://webcast.cern.ch, and distributed through the Eurovision
network. Live stand up and playout facilities will also be available.
A media centre will be established at the main CERN site, with
access to
the control centres for the accelerator and experiments limited and
allocated on a first come first served basis. This includes camera
positions at the CERN Control Centre, from where the LHC is run. Only
television media will be able to access the CERN Control Centre. No
underground access will be possible.
For further information and accreditation procedures:
http://www.cern.ch/lhc-first-beam
Contact information:
E-mail: press.office@cern.ch
=====
*CERN, the European Organization for Nuclear Research, is the world's
leading laboratory for particle physics. It has its headquarters in
Geneva. At present, its Member States are Austria, Belgium,
Bulgaria, the
Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary,
Italy,
Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden,
Switzerland and the United Kingdom. India, Israel, Japan, the Russian
Federation, the United States of America, Turkey, the European
Commission
and UNESCO have Observer status.
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