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TOPIC: Large Hadron Collider


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RE: Large Hadron Collider
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A vast physics experiment - the Large Hadron Collider (LHC) - reaches a key milestone this weekend ahead of an official start-up on 10 September.
Engineers had previously brought a beam of protons - tiny, sub-atomic particles - to the "doorstep" of the LHC.
On 9 August, protons will be piped through LHC magnets for the first time.

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The Large Hadron Collider is entering the final stages of being lowered to a temperature of 1.9 Kelvin (-271C; -456F) - colder than deep space.

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Our planet is not at risk from the world's most powerful particle physics experiment, a report has concluded.
The document addresses fears that the Large Hadron Collider is so energetic, it could have unforeseen consequences.
Critics are worried that mini-black holes made at the soon-to-open facility on the French-Swiss border might threaten the Earth's very existence.

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ATLAS
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Today the ATLAS collaboration at CERN celebrates the lowering of its last large detector element. The ATLAS detector is the worlds largest general-purpose particle detector, measuring 46 metres long, 25 metres high and 25 metres wide; it weighs 7000 tonnes and consists of 100 million sensors that measure particles produced in proton-proton collisions in CERNs Large Hadron Collider(LHC).
The first piece of ATLAS was installed in 2003 and since then many detector elements have journeyed down the 100 metre shaft into the ATLAS underground cavern. This last piece completes this gigantic puzzle.

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CERN Director General Robert Aymar today delivered an end of year status report at the 145th meeting of Council, the Organizations governing body. Dr Aymar reported a year of excellent progress towards the goal of starting physics research at the Large Hadron Collider (LHC) in summer 2008. Council also approved a budget for CERN in 2008 that will allow consolidation of CERNs aging infrastructure to begin, along with preparations for an intensity upgrade for the LHC, by 2016.

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At a brief ceremony deep under the French countryside today, CERN1 Director General Robert Aymar sealed the last interconnect in the worlds largest cryogenic system, the Large Hadron Collider (LHC). This is the latest milestone in commissioning the LHC, the worlds most powerful particle accelerator.
The LHCs cryogenic system has the task of cooling some 36 800 tonnes of material to a temperature of just 1.9 degrees above absolute zero (271.3°C), colder than outer space. To do this, over 10 000 tonnes of liquid nitrogen and 130 tonnes of liquid helium will be deployed through a cryogenic system including over 40 000 leak-tight welds. Todays ceremony marks the end of a two year programme of work to connect all the main dipole and quadrupole magnets in the LHC. This complex task included both electrical and fluid connections.

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Think your storage headaches are big? Try being the guy in charge of storing the 1GB of data per second every day for a month coming off CERN's large hadron collider (LHC).

Maybe you last read about CERN (the European Organization for Nuclear Research) and its massive particle accelerators in Angels & Demons by Dan Brown of The Da Vinci Code fame. In that book, the lead character travels to the cavernous research institute on the border of France and Switzerland to help investigate a murder. In real life, one of CERN's grisliest problems is finding storage for the massive amounts of data derived from its four high-profile physics experiments making use of the institute's large hadron collider (LHC). Due for operation in May 2008, the LHC is a 27-kilometer-long device designed to accelerate subatomic particles to ridiculous speeds, smash them into each other and then record the results.
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Central Trigger Processor
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A British-built  Central Trigger Processor (CTP) was added to the ALICE (A Large Ion Collider Experiment) cavern last week.
ALICE is one of the four main experiments which will begin once the world's largest machine, the Large Hadron Collider (LHC), is completed next year.
The new processor will power one of the four experiments housed 150 feet underground at CERN in Geneva.

"The CTP is essentially the electronic brain of the whole ALICE experiment. It can receive up to 60 input signals from various sub-detectors and sensors every 25ns (25 billionths of a second) and make complex decisions in less than 100ns (a tenth of a millionth of a second). The CTP decides if an interesting particle collision has taken place and tells the many sub-detectors of ALICE whether to collect the data or not" -  Dr David Evans,  University of Birmingham.

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The Large Hadron Collider (LHC) particle accelerator at Cern will now be powered-up in May 2008 after a number of delays in its construction.
A planned low energy run, originally scheduled for later this year, had been dropped as a result of the setbacks, project scientists said.
The giant underground laboratory on the French-Swiss border is designed to probe the limits of physics.
The facility will collide sub-stomic particles in a 27km-long ringed tunnel.

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BBC-Horizon-The Six Billion Dollar Experiment
Will the Large Hadron Collider finally reveal the elusive God particle?



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