CERN plans new particle accelerator four times bigger than Large Hadron Collider



January 16, 2019 13:59:18

Scientists behind the world's largest atomic smasher have laid out nearly $ 40 trillion vision to build a new one about four times larger under the Swiss-French border, in the hopes of unlocking even more secrets of the universe.

Officials at CERN hope to build a "Future Circular Collider" (FCC) in a circular tunnel stretching 100 kilometers near Geneva that could start operating in 2040 and take over from the existing 27km Large Hadron Collider (LHC).

Colliders, also known as particle accelerators, send two high-energy particle beams down tubes in opposite directions at close to the speed of light before smashing the beams together, resulting in the creation of new particles that help explain physics and the make-up or the universe.

CERN has released a concept paper for the FCC that has been five years in the making, which is the European research agency's 22 member states will make a decision in the next few years about or to proceed with the project.

Why are they already planning a new one?

It was not like that, but it was already more than 10 years since the Large Hadron Collider was completed and first turned on.

In that time it has conducted many experiments and made important discoveries – including its best-known work or helping confirm the new subatomic Higgs boson in 2012.

CERN says it's announcing the ambitious FCC project now, despite the LHC still enjoying successes, because the large scale and timeframe of the project mean the window for planning for the future is narrow.

A timeframe of 20 years to design, construct and start operating a new collider is "appropriate", CERN said on its website.

For comparison, the LHC started operation in 2008 but was first conceived in the 1980s.

"The goal is to ensure the seamless continuation of the world's particle physics program after the LHC era," CERN said.

What can a bigger collider achieve?

The particle collisions in the proposed FCC would be more powerful than what can currently be achieved – reaching 100% electron volts or energy compared to 17 TeV in the current collider.

  • The Higgs boson is a sub-atomic particle that scientists say confers mass.
  • It is conceived as existing in an invisible field that stretches across the Universe known as the Higgs Field.
  • Higgs bosons "stick" on fundamental particles of matter as they move through the field.
  • These particles interact more with the Higgs than others and thus have greater mass. But particles of light, also called photons, are impervious to it and have no mass.
  • The Higgs particle was verified in experiments conducted in the Large Hadron particle accelerator (pictured) at CERN.
  • Watch the Higgs boson explained in 30 seconds here.

Read more about the Higgs boson

This would open up new avenues for research and new particles that could be created and observed in the collider.

It took the LHC years to create and detect a Higgs boson – a particle that helps confirm the standard model of physics and explain why matter has mass – but the new collider would allow the "precise studies of how a Higgs particle interacts with another Higgs particle. "CERN said.

It would be a "Higgs factory" of sorts, CERN said.

"The Higgs boson could be a by in new physics. Detailed studies of its properties are a priority for any future high-energy physics accelerator," the agency said.

"In addition, experimental evidence requires physics beyond the standard model to account for observations such as dark matter and the domination of mats over antimatter.

"The search for new physics, for which a future circular collider would have a permanent discovery potential, is therefore of paramount importance to making significant progress in our understanding of the universe."

CERN director-general Fabiola Gianotti called the concept paper "a remarkable achievement" that could help boost understanding of fundamental physics and advance technologies.

It comes with a huge price tag

The first step of the FCC would be to build an electron-positron collider at an estimated cost of 9 billion euros ($ 14.2 billion) – with 5 billion euros of that going towards actually building the 100km tunnel.

A second phase would involve a superconducting proton machine in the same 100km tunnel, at a cost of about 15 billion euros ($ 23.7 billion). That machine could start operation in the late 2050s.

Together the two phases would contribute to a price tag of about $ 38 billion – more than the $ 6.4 billion construction cost of the LHC.

The project is the combined work of 1,500 contributors across 150 universities, research institutions and industrial partners and is yet to be approved.

CERN will spend the next two years updating the physics community on its plans and the agency's 22 member states will have to vote on the proposal.







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