CERN, LHC. The End is soon.
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From: Media Watcher on 23 Nov 2009 15:00 I'm not a scientist (just a mere amateur astronomer) and I only did some copy/edit/paste from this website: http://dovgel.com/engl/analysis.htm Thank you for correcting this information and giving me a reassuring answer regarding the points I was deeply worried about.
From: Aleph on 23 Nov 2009 15:11 In article <978c1f3c-d18f-4627-8b46- f8e12bd807eb(a)p33g2000vbn.googlegroups.com>, sent to sci.physics on Mon, 23 Nov 2009 11:41:19 -0800 (PST), Media Watcher <bog2(a)telenet.be> imparted these words of wisdom: > > I'm not a scientist and I only did some copy/edit/paste from this So, not being a scientis, you visited a random website and decided it was strong enough evidence that all the reports and research accepted by scientsts counted for nothing? That speaks volumes. > website: http://dovgel.com/engl/analysis.htm > Finally someone gave me - a non scientist - a reassuring answer > regarding the points I was deeply worried about. You must get scared very easily. -- Aleph This article was posted to USENET, please reply in that manner. Emails to this account will be ignored.
From: PD on 23 Nov 2009 15:12 On Nov 23, 1:10 pm, Media Watcher <b...(a)telenet.be> wrote: > These are the correct written numbers: > > Secondly, if we consult the encyclopedia (Big Encyclopedia of Cyril & > Methodius, 2008): "Cosmic rays are streams of stable particles of > high > energies (approximately from 1 up to 10^12 GeV), reaching Earth from > space (primary radiation), and also created by these particles during > their interaction with the nuclei of the atmosphere (secondary > radiation) which consists of all known elementary particles ". As we > see, cosmic rays have a limit of 10^12 GeV, while the collider will > produce 1.4x10^13, 1.4x10^13 WHAT? GeV? No. At its peak, LHC is going to provide an energy of 1.4x10^4 GeV. That is one BILLION times smaller than the energy provided by cosmic rays. You perhaps should not work so fervently to fool yourself with numbers. > i.e. more than one order higher (naturally, since > the experiments will be modeling the conditions which existed one > trillionth of a second after Big Bang!).
From: Media Watcher on 23 Nov 2009 15:25 Alright you guys, thank you all very much for explaining those things in laymen terms. As a matter of fact you did CERN's job. CERN should have not just only produced a safety rapport for scientists but a simpler one for the worried general public as well.
From: Media Watcher on 23 Nov 2009 15:34
Just received this CERN press release: PR17.09 - 23.11.2009 Two circulating beams bring first collisions in the LHC 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. Its 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 theres 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 were seeing are beautiful, said LHCb spokesperson Andrei Golutvin, were 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. For photos of the first collisions : http://press.web.cern.ch/press/PressReleases/Releases2009/PR17.09E.html For photos inside the CERN Control Centre see : http://cdsweb.cern.ch/record/1223969?ln=fr Follow LHC progress on twitter at www.twitter.com/cern For photos, video and latest information see: http://press.web.cern.ch/press/lhc-first-physics/ See today's press conference here : http://cdsweb.cern.ch/record/1223965 Contact : http://press.web.cern.ch/press/ContactUs.html |