Cern Council Reviews Feasibility Study for a Next-Generation Collider

Postedabout 2 months agoActiveabout 1 month ago

elashri

16 points

5 comments

home.cernResearchstory

calmpositive

Debate

20/100

Particle PhysicsCernFuture Collider

Key topics

Particle Physics

Cern

Future Collider

CERN is reviewing a feasibility study for a next-generation collider, sparking discussion about its potential design and location, with commenters considering the possibilities and implications of such a project.

Snapshot generated from the HN discussion

Discussion Activity

Active discussion

First comment

Peak period

Day 12

Avg / period

4.4

Key moments

01Story posted
Nov 11, 2025 at 7:31 PM EST
about 2 months ago
Step 01
02First comment
Nov 12, 2025 at 12:46 AM EST
5h after posting
Step 02
03Peak activity
11 comments in Day 12
Hottest window of the conversation
Step 03
04Latest activity
Nov 27, 2025 at 5:58 AM EST
about 1 month ago
Step 04

Generating AI Summary...

Analyzing up to 500 comments to identify key contributors and discussion patterns

Discussion (5 comments)

Showing 22 comments

mikebonnell

about 2 months ago

2 replies

Would this be a different loop, but connected to LHC or is this a new standalone loop where they would need to find a locale to build it underground?

elashriAuthor

about 2 months ago

1 reply

This will be a completely new tunnel loop. The LHC tunnel will be used by LHC at the same time the new tunnel loop is being constructed.

mikebonnell

about 2 months ago

Thanks for clarifying, much appreciated.

maxnoe

about 2 months ago

2 replies

Completely new tunnel, but it will be connected to LHC, as they will use LHC to pre accelerate the particles.

Almost all accelerators built at CERN are still active and are a chain of pre-accelerator for LHC now:

https://en.wikipedia.org/wiki/Large_Hadron_Collider#/media/F...

ttoinou

about 1 month ago

That seems like insane engineering

iberator

about 2 months ago

wow. Amazing map. Just imagine Half Life map with it... :)

amanaplanacanal

about 1 month ago

3 replies

What experiments would people like to do, that this new collider would make possible? What theories will be tested?

robin_reala

about 1 month ago

1 reply

https://en.wikipedia.org/wiki/Future_Circular_Collider#Motiv...

The Future Circular Collider (FCC) study develops options for potential high-energy frontier circular colliders at CERN for the post-LHC era. Among other things, it plans to look for dark matter particles, which account for approximately 25% of the energy in the observable universe. Though no experiment at colliders can probe the full range of dark matter (DM) masses allowed by astrophysical observations, there is a very broad class of models for weakly interacting massive particles (WIMPs) in the GeV – tens of TeV mass scale, and which could be in the range of the FCC.

sylware

about 1 month ago

1 reply

Wild guess: they hacked the maths of those models/choose the models in order to fit the energy range of this new collider ? Ask Sabine H., need a BS meter evaluation... :)

layer8

about 1 month ago

1 reply

Sabine H. isn’t exactly low on the BS scale.

sigmoid10

about 1 month ago

1 reply

This. If you want someone with honest insight into high energy theory, you probably shouldn't listen to a person who still pushes out papers that favour MOND over DM by curve-fitting special galaxies. This topic has been studied to death and it simply doesn't work well enough to warrant such strong opinions against DM. That's why her papers mostly go ignored in the community (many of them aren't even physics anymore and edge more into philosophy-babble or even sociology). All they do is make captivating conspiracy youtube videos for the average layperson.

sylware

about 1 month ago

1 reply

Wow, you have to make a detailing youtube video for all that, without this you are a 10...

sigmoid10

about 1 month ago

1 reply

Sorry, I have actual work to do instead of making youtube videos for non-peers.

sylware

about 1 month ago

1 reply

Now you are a 20... or an AI. Come on...

sigmoid10

about 1 month ago

1 reply

Thank you for reinforcing my point. Even if you can't see it, anyone who reads this will.

sylware

about 1 month ago

Of course, this sole HN comment is worth ten times more than a famous person making scientific videos on the internet... BTW, I wonder where is her mondo-meter at (aka "stuff" vs "model fixing").

We all know she has many enemies in the academics since targetting its funding... you are more likely to be one of them than anything else.

"Anyone who reads this will see it".

...

AI?

SiempreViernes

about 1 month ago

You are in luck, this is exactly the sort of questions that accelerator designers like to answer. You can find the answers on the first 70 pages in volume 1 of the FCC feasibility report: https://cds.cern.ch/record/2928193 just the first

amadio

about 1 month ago

If you would like to know more details about the physics case for FCC, there was an academic training recently at CERN covering just that which I recommend: https://indico.cern.ch/event/1582427/

UltraSane

about 1 month ago

1 reply

I think the money would be better spent on gravitational wave detectors as they might detect data about the true nature of black holes and help us develop a theory of quantum gravity or at least rule some out.

bloggie

about 1 month ago

1 reply

These experiments afaik don't require particle accelerators and are a different field of science, one of the largest of these detectors is the LIGO observatory overseen by Caltech

https://www.ligo.caltech.edu/page/what-is-ligo

There is a list of similar observatories in this document

https://dcc-llo.ligo.org/public/0125/G1600979/003/G1600979_L...

UltraSane

about 1 month ago

I know. That is why I think the money that would be spent on a new particle accelerator should be spent on new more sensitive gravitational wave detectors.

aeve890

about 1 month ago

just one more accelerator bro. just one slightly larger accelerator than the one we just got online. we can revolutinize physics with just one more accelerator bro. Just give me 20 billion euros bro and we'll solve physics I promise br

View full discussion on Hacker News

ID: 45894872Type: storyLast synced: 11/20/2025, 1:42:01 PM

Want the full context?

Jump to the original sources

Read the primary article or dive into the live Hacker News thread when you're ready.

Open link View on HN