And then there were collisions

lidiaz RSS / 24.11.2009. u 16:05

atlas2009-collision-atlantis-140541-171897-new.png 

 Dakle, juce, 23 novembra u 14:22 (srednjeevropsko vreme) detektor Atlas zabelezio je prvi sudar, CMS malo kasnije. Prvi rekonstrusani tragovi su na slici gore. Dole je saopstenje za javnost direktora Cerna Rolfa Heuera.

 

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Geneva, 23 November 2009. Today the LHC circulated two beams simultaneously for the first time, allowing the operators to test the synchronization of the beams and giving the experiments their first chance to look for proton-proton collisions. With just one bunch of particles circulating in each direction, the beams can be made to cross in up to two places in the ring. From early in the afternoon, the beams were made to cross at points 1 and 5, home to the ATLAS and CMS detectors, both of which were on the lookout for collisions. Later, beams crossed at points 2 and 8, ALICE and LHCb.

 

“It’s a great achievement to have come this far in so short a time,” said CERN Director General Rolf Heuer. “But we need to keep a sense of perspective – there’s still much to do before we can start the LHC physics programme.”

 

Beams were first tuned to produce collisions in the ATLAS detector, which recorded its first candidate for collisions at 14:22 this afternoon. Later, the beams were optimised for CMS. In the evening, ALICE had the first optimisation, followed by LHCb.

 

“This is great news, the start of a fantastic era of physics and hopefully discoveries after 20 years' work by the international community to build a machine and detectors of unprecedented complexity and performance," said ATLAS spokesperson Fabiola Gianotti.

 

“The events so far mark the start of the second half of this incredible voyage of discovery of the secrets of nature,” said CMS spokesperson Tejinder Virdee.

 

“It was standing room only in the ALICE control room and cheers erupted with the first collisions,” said ALICE spokesperson Jurgen Schukraft. “This is simply tremendous.”

 

“The tracks we’re seeing are beautiful,” said LHCb spokesperson Andrei Golutvin, “we’re all ready for serious data taking in a few days time.”

 

These developments come just three days after the LHC restart, demonstrating the excellent performance of the beam control system. Since the start-up, the operators have been circulating beams around the ring alternately in one direction and then the other at the injection energy of 450 GeV. The beam lifetime has gradually been increased to 10 hours, and today beams have been circulating simultaneously in both directions, still at the injection energy.

 

Next on the schedule is an intense commissioning phase aimed at increasing the beam intensity and accelerating the beams. All being well, by Christmas, the LHC should reach 1.2 TeV per beam, and have provided good quantities of collision data for the experiments’ calibrations.

 


 



Komentari (15)

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Milutin Milošević Milutin Milošević 16:12 24.11.2009

Počelo

A vidim ja juče nešto mi se manta po glavi

Sad mi jasno. Kako li je tek GospodŽa Klara?
lidiaz lidiaz 16:32 24.11.2009

Re: Počelo

Pa sto si gurnuo glavu pod zemlju
Gospodja Klara Gospodja Klara 17:41 24.11.2009

Re: Počelo

A vidim ja juče nešto mi se manta po glavi

Komšija, samo da se javim, još uvek smo tu (taman da mi propadne bašta zbog nji'ove zahebancije, pa da ih sve tužim). Uz to, starija ćerka je danas imala školski obilazak, doduše samo nadzemni, ''dole'' više ne puštaju posetioce. Evo i ona je dobro. Malo varniči u prolazu, ali to je normalno za tinejdžere...
Milutin Milošević Milutin Milošević 18:09 24.11.2009

Re: Počelo

Malo varniči u prolazu

srdjan.pajic srdjan.pajic 03:42 25.11.2009

Re: Počelo

Gospodja Klara
A vidim ja juče nešto mi se manta po glavi

Komšija, samo da se javim, još uvek smo tu (taman da mi propadne bašta zbog nji'ove zahebancije, pa da ih sve tužim). Uz to, starija ćerka je danas imala školski obilazak, doduše samo nadzemni, ''dole'' više ne puštaju posetioce. Evo i ona je dobro. Malo varniči u prolazu, ali to je normalno za tinejdžere...


Gospodjo, vi postajete moj omiljeni bloger: em volite The Pixies, em zivite iznad kolajdera!
Volite li macke? A baobabe?

Gospodja Klara Gospodja Klara 13:49 25.11.2009

Re: Počelo

Volite li macke? A baobabe?

Mačke su mi omiljene. A baobab je čudo zaista.
Jedino što ne pravim dobru sarmu, inače sam univerzalni renesansni čovek.
Eto, CV mi je kompletan sada.
blogovatelj blogovatelj 17:26 24.11.2009

I?

Pa jel napravise tu crnu rupu?
lidiaz lidiaz 15:38 25.11.2009

Re: I?

Jos si tu
blogovatelj blogovatelj 15:52 25.11.2009

Re: I?

Jos si tu


Gde sam jos tu?
lidiaz lidiaz 16:43 25.11.2009

Re: I?

Pa nije te progutala crna rupa
omega68 omega68 20:01 25.11.2009

Re: I?

Pa nije te progutala crna rupa

mene jeste, jedna...
odavno
noboole noboole 20:28 25.11.2009

Re: I?

omega68
Pa nije te progutala crna rupa
mene jeste, jedna...
odavno



Hoking je naredio cernovskim crnim rupama da ispare. Ali, treba se vakcinisati, za svaki slucaj.
Milutin Milošević Milutin Milošević 08:56 01.12.2009

Ubrzava se, ubrzava

Rekord LHC-a u akceleraciji protona

Ovo mi je zanimljivo:

Energija jednog protona od jedan bilion elektron-volta je jednaka energiji kretanja jednog komarca u letu.

Kada je snop protona potpuno ispunjen, odnosno kada se u njemu nalazi 300.000 milijardi protona od sedam biliona elektron-volti, što je cilj LHC-a, njegova energija je jednaka nosaču aviona koji se kreće brzinom od 20 čvorova.
Gospodja Klara Gospodja Klara 09:44 01.12.2009

Re: Ubrzava se, ubrzava

Ovo mi je zanimljivo:

I meni je zanimljivo, ne znam samo da li mi osećaj prijatnosti koji gajim stimuvezi više izaziva pomisao na 7 biliona komaraca ili na taj nosač aviona.
Milutin Milošević Milutin Milošević 11:29 01.12.2009

Re: Ubrzava se, ubrzava

7 biliona komaraca ili na taj nosač aviona

Ne znaš šta je gore

Arhiva

   

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