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Photo Information
Copyright: Sven Erich Czernik (Energysavingelk) Gold Star Critiquer/Gold Note Writer [C: 351 W: 1 N: 924] (4495)
Genre: Places
Medium: Color
Date Taken: 2010-11-30
Categories: Daily Life, Architecture, Decisive Moment
Photo Version: Original Version
Date Submitted: 2018-02-09 1:08
Viewed: 381
Points: 2
[Note Guidelines] Photographer's Note
I will continue my little series on physics at CERN today.

The Large Hadron Collider LHC will accelerate protons during most of its beam time, while some beam time is reserved for experiments with lead ions.

"The Low Energy Ion Ring (LEIR) receives long pulses of lead ions from Linear accelerator 3 (Linac 3) and transforms them into the short, dense bunches suitable for injection to the Large Hadron Collider (LHC).

LEIR splits each long pulse from Linac 3 into four shorter bunches, each containing 2.2108 lead ions. It takes about 2.5 seconds for LEIR to accelerate the bunches, in groups of two, from 4.2 MeV to 72 MeV. The ions are then at a suitable energy to be passed to the Proton Synchrotron (PS) for storage. Next, the lead ions are passed from accelerator to accelerator along the CERN complex to end up at their highest energy in the LHC. The LHC uses 592 bunches of ions per beam, so it takes around 10 minutes for LEIR to provide enough for a complete fill." Source: CERN

In this case, the question of nationality within the supranational CERN territory does not arise: the rather small LEIR facility is definitely situated in Switzerland.
Taken on film with Canon A1.

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  • emka Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 10765 W: 146 N: 27099] (129753)
  • [2018-02-11 18:35]

Hello Sven,

Interesting picture from CERN, this time with the LEIR. Scientific facility in nice colours. The picture was made in 2010, so when LEIR started to operate. Are you physicist? I am, but I haven't worked in research but editing books on physics, quite many on the high energy physics.

Kind regards MAlgo

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