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28/04/2012 - 20:11 von HIOB | Report spam
"LHC yields data rapidly at new collision energy of 8 TeV



New record energy

At 12.38 a.m. on 5 April, the LHC shift crew declared "stable beams"
as two 4 TeV proton beams were brought into collision at the LHC’s
four interaction points. This signalled the start of physics data-
taking by the LHC experiments for 2012. The collision energy of 8 TeV
is a new world record. By 11 April the LHC had already delivered a
total integrated luminosity of 0.2 fb–1 to the experiments. Last year,
it took six weeks achieve the same number.

Although the increase in collision energy is relatively modest, it
translates to an increased discovery potential that can be several
times higher for certain hypothetical particles. Some, such as those
predicted by supersymmetry, would be produced much more copiously at 8
TeV than the 7 TeV of 2011. Larger numbers of Standard Model Higgs
bosons, if they exist, will also be produced at 8 TeV but background
processes that mimic the Higgs signal will also increase. That means
that the full year’s running will still be necessary to convert the
tantalizing hints seen in 2011 into a discovery – or to rule out the
Standard Model Higgs particle altogether.

Protons were accelerated to 4 TeV for the first time on the evening 16
March just two days after beam returned to the machine for 2012. A
period of beam commissioning followed, during which the teams checked
that the various systems are working flawlessly with beam. The optics
measurements included setting the β* of the squeezed beam at the
interaction regions. The aim this year is to have a smaller β* of 60
cm for the ATLAS and CMS experiments. The smaller β* is then the
thinner and more squeezed the beams are at the collision points, but
it also requires that the collimators are positioned closer to the
beam. The collimation system is therefore carefully set up in
different machine modes: injection energy; full energy; full energy
with squeezed bunches; and full energy with collisions. By provoking
beam losses and making "loss maps", the operators verify that the beam
is lost in the collimation region and not in places where it can cause
damage. All of these checks take place with a few, often low-
intensity, bunches.

The LHC is now scheduled to run until the end of 2012, when it will go
into its first long shutdown in preparation for running at an energy
of 6.5 TeV per beam in late 2014, with the ultimate goal of ramping up
to the full design energy of 7 TeV per beam."

Das wird ja immer schöner für den Steuerzahler.
 

Lesen sie die antworten

#1 Blue Bull
01/05/2012 - 17:14 | Warnen spam
On 28 Apr., 20:11, HIOB wrote:
"LHC yields data rapidly at new collision energy of 8 TeV

New record energy

 At 12.38 a.m. on 5 April, the LHC shift crew declared "stable beams"
as two 4 TeV proton beams were brought into collision at the LHC’s
four interaction points. This signalled the start of physics data-
taking by the LHC experiments for 2012. The collision energy of 8 TeV
is a new world record. By 11 April the LHC had already delivered a
total integrated luminosity of 0.2 fb–1 to the experiments. Last year,
it took six weeks achieve the same number.

Although the increase in collision energy is relatively modest, it
translates to an increased discovery potential that can be several
times higher for certain hypothetical particles. Some, such as those
predicted by supersymmetry, would be produced much more copiously at 8
TeV than the 7 TeV of 2011. Larger numbers of Standard Model Higgs
bosons, if they exist, will also be produced at 8 TeV but background
processes that mimic the Higgs signal will also increase. That means
that the full year’s running will still be necessary to convert the
tantalizing hints seen in 2011 into a discovery – or to rule out the
Standard Model Higgs particle altogether.

Protons were accelerated to 4 TeV for the first time on the evening 16
March just two days after beam returned to the machine for 2012. A
period of beam commissioning followed, during which the teams checked
that the various systems are working flawlessly with beam. The optics
measurements included setting the β* of the squeezed beam at the
interaction regions. The aim this year is to have a smaller β* of 60
cm for the ATLAS and CMS experiments. The smaller β* is then the
thinner and more squeezed the beams are at the collision points, but
it also requires that the collimators are positioned closer to the
beam. The collimation system is therefore carefully set up in
different machine modes: injection energy; full energy; full energy
with squeezed bunches; and full energy with collisions. By provoking
beam losses and making "loss maps", the operators verify that the beam
is lost in the collimation region and not in places where it can cause
damage. All of these checks take place with a few, often low-
intensity, bunches.

The LHC is now scheduled to run until the end of 2012, when it will go
into its first long shutdown in preparation for running at an energy
of 6.5 TeV per beam in late 2014, with the ultimate goal of ramping up
to the full design energy of 7 TeV per beam."

Das wird ja immer schöner für den Steuerzahler.





Consider :

A collision is here the same as a " destruction " !

So . we can use this data to learn what it means when
something is destroyed !

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