OPERA Blames the Blogosphere

April 20, 2012

It had to happen, OPERA has blamed its woes on the blogosphere, or perhaps not. Maybe it is just NewScientist trying to stir up trouble. This what they say in their editorial from 7th April

Perhaps the only way to have avoided the fuss would have been to keep the result under wraps for even longer than the three years it took to become public. Its flaws might have been uncovered more discreetly. But word was leaking into the blogosphere; OPERA physics coordinator Dario Autiero, who also stood down, says concealment was untenable

So it’s all our fault guys. If we had not leaked the story they could have kept it secret for a few more years until they found the loose cable and Autiero would be a hero.

In case anyone hasn’t noticed there are several flaws with this argument but not least is the observation that OPERA had planned its public presentation at CERN and already primed the press before the first hints of a rumour reached any blog, If NewScientist had checked the blogosphere they could have found a conveniently detailed timeline of the events here.


The Dalai Lama wins the Templeton Prize

April 17, 2012

For details see here. This is likely to be a controversial choice given the political implications. Previous prizes have gone to astronomers and physicists so this years award is noticeably different but porbably in keeping with the prizes declared purpose. Congratulations.

LHC Update

April 15, 2012

During the last two weeks while I have been away the LHC has made a rapid start to its 2012 run. Peak luminosities are already around 4.5/nb/s in CMS although it is hard to be sure how accurate this is since they have not yet had time to do the scans required for proper calibration. This exceeds last years records already. About 0.6/fb has already been delivered and is now increasing rapidly. Stability and efficiency is looking very reasonable at this early stage.

Update 20-Apr-2012: According to CMS the LHC has now delivered over 1/fb this year. The ATLAS figure is a fair bit lower and we wont know who is right until the recent Van de Meer scans have been analysed. The milestone was reached thanks to the Machine Development break being reduced by one day. Paul Collier from beam operations has siad that there is still a little scope to increase the bunch intensity from 130 billion to about 150 billion. This could give as much as 33% more luminosity. With these figures they should have no trouble collecting about 1/fb per week and there are 20 weeks of proton physics left after the technical stop next week.

There is now good hope for some preliminary results at the new higher energy of 8 TeV during conferences scheduled for the next few months, with high expectations for the big ICHEP conference in July.

Update 18-Apr-2012: The LHC operations has now reached the maximum bunch numbers of 1380 per beam given the current parameters. This means that it is now fully up to speed and should run like this for the rest of the 2012 run. Progress towards this point has been very smooth and has taken just three weeks since first collisions.

If operating efficiency stays as good as this for the rest of the year they will have no trouble meeting their stated targets. Luminosity peaked at 5.6/nb/s in CMS. This may increase a little if they try a little more bunch intensity but there is not much room for improvement, so this years run will be very different from last year when the luminosity was continually increasing throughout the year. (I am assuming they wont go for something crazy like improving the squeeze or switching to 25ns spacing)

After one more day of running the first Machine Development and Technical Stop will interrupt data collection for about 8 days. If tomorrow goes well they could reach the first inverse femtobarn before the stop.