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CERN's Large Hadron Collider -- it's large

The Large Hadron Collider (LHC) has come across an unanticipated problem — it's running out of disk infinite. "This year the LHC is stable and reliable," says Jorg Wenninger, head of operations at the LHC. "It is working like clockwork. We don't have much downtime." That'due south actually the problem.

When the collider was planned out, as Symmetry reports, scientists expected that it would be running well-nigh a third of the time. The residual of the time would exist used for maintenance, refilling, rebooting, and other such logistical tasks. But that'southward not how it seems to work in exercise. This may be the first time in history when technicians accept fabricated a bad estimate about uptime and had that upshot in success. The LHC is actually doing collisions near 70% of the fourth dimension, more than double its expected rate.

This faster standoff rate lets scientists learn more about rare processes and particles like the Higgs boson, which the LHC produces about once per billion collisions. It'due south also filling up their information storage.

"The number of difficult drives that we buy and store the data on is determined years before we have the data, and it'southward based on the projected LHC uptime and luminosity," said Jim Olsen, a physics professor working on the CMS project, to Symmetry. "Because the LHC is outperforming all estimates and even the best rosy scenarios, we started to run out of deejay space. Nosotros had to quickly consolidate the old simulations and data to make room for the new collisions."

I reason for the huge glut of data is the number of different experiments going on at CERN. They all have to jockey for time.

Totem

Function of the ATLAS/ALFA experiment apparatus at Point i in the LHC tunnel. (Image: Ronaldus Suykerbuyk/CERN)

The most recent experiment taking up collider time is on the ATLAS hardware — and instead of focusing on the maximum number of collisions possible (this is typically referred as "luminosity"), the squad is prepping for some low-speed, low-free energy collisions. The blazon of handful they want to study is known as "elastic scattering," which occurs when 2 protons survive their see with one some other in the detector. Instead of smashing protons together to see what happens when they collide, the goal is to bounce them off each other and measure what happens later on that. The long-term goal is to better model cosmic rays and understand why cosmic rays that hit our atmosphere carve up into an array of secondary particles. By watching what happens to protons when they "bounce," scientists hope to better understand why catholic rays separate into secondary particles when they strike Earth's atmosphere.

One of the other goals of these upcoming experiments is to mensurate the probability that 2 protons could pass direct through each other without interacting at all. This is only possible because, similar other atoms (which are by and large fabricated up of empty space), protons are themselves composed of particles. In theory, it may be possible for one proton to laissez passer through another. How often this happens is what we're hoping to find.

As for the depression storage problem, maybe CERN should call Backblaze. They've got some pretty decent drive pods up and running…

Now read: How does the Large Hadron Collider work?