CERN approves plans for a $23B, 62-mile long super-collider
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Re: CERN approves plans for a $23B, 62-mile long super-collider
#2Super exciting! For reference, current Large Hadron Collider is 17 miles (27 km).
Re: CERN approves plans for a $23B, 62-mile long super-collider
#3> The aim is to start construction of the new tunnel by 2038
Not in my lifetime, I guess.
Re: CERN approves plans for a $23B, 62-mile long super-collider
#4> It could be a hard sell, especially as the new collider wouldn’t have as clear a goal as the LHC did. However, particle physics and the Standard Model are at a place where the application of science is needed to validate theories.
I mean I understand the need to keep pushing the boundaries of fundamental physics, but how long do you justify such spending on a single project? That same money could possibly be pumped into more immediately useful "hard" applied problems like fusion reactors, clean energy, propulsion systems or pretty much any problem on the technology horizon that won't be funded by private capital.
Re: CERN approves plans for a $23B, 62-mile long super-collider
#5More precisely, CERN approves spending a few million to consider more detailed plans for a $23B, 62-mile long super-collider.
Re: CERN approves plans for a $23B, 62-mile long super-collider
#6I guess this might be a stupid question, but how does the size of the circle matter ? I mean, the particles are going in a round, wouldn't that be like infinite from the particles prespective, so is it related to the turn rate or something ?
Re: CERN approves plans for a $23B, 62-mile long super-collider
#7I guess this might be a stupid question, but how does the size of the circle matter ? I mean, the particles are going in a round, wouldn't that be like infinite from the particles prespective, so is it related to the turn rate or something ?
Turning a particle moving at half light speed requires some pretty big magnets; the bigger the faster and tighter the turn.
The bigger turning circle lets them go faster with the same magnets.
Re: CERN approves plans for a $23B, 62-mile long super-collider
#8I guess this might be a stupid question, but how does the size of the circle matter ? I mean, the particles are going in a round, wouldn't that be like infinite from the particles prespective, so is it related to the turn rate or something ?
It is more related to the needed strength of the magnets to keep the particles on track and also the synchrotron radiation.
The first issue is that the lower the radius of the circle, the stronger magnetic field is needed because of the increased centrifugal forces.
The second issue is that synchrotron radiation leads to loss of energy. It is again proportional to the acceleration perpendicular to the vector of the velocity of the particle [0].
Re: CERN approves plans for a $23B, 62-mile long super-collider
#9Alternative link that doesn't have a redirect to an advertising.com address or forced tracking cookie acceptance
https://phys.org/news/2020-06-cern-council-endorses-larger-s...
Re: CERN approves plans for a $23B, 62-mile long super-collider
#10I guess this might be a stupid question, but how does the size of the circle matter ? I mean, the particles are going in a round, wouldn't that be like infinite from the particles prespective, so is it related to the turn rate or something ?
The particles that go around radiate their energy away, which is a function of the radius of the circle. It is called synchrotron radiation and is the main limitation factor of these kind of accelerators.