#FCC-ee
FCC-ee collider, here we go! 🧪
The European Strategy for Particle Physics reaches an important milestone

At its 225th session, the #CERN Council received the recommendations for the update of the European Strategy for Particle Physics.

Read more: home.cern/news/press-r...
December 12, 2025 at 10:41 PM
🧵 Big news for particle physics this week, and honestly for me personally too.

The CERN Council has officially adopted the updated European Strategy for Particle Physics — and the recommendation is clear: FCC-ee is the preferred next flagship collider after the LHC. 1/6
May 30, 2026 at 4:37 PM
Fun trip to Fermilab to give a plenary on a FCC-ee future for CERN at DPF2026. FCC-ee + a US based muon collider could lead to a revolutionary century for science and technology!⚛️🧪
July 22, 2026 at 10:40 PM
The CERN Council decided to update the European Strategy for Particle Physics #ESPP

🔗Find out more: home.cern/the-cern-cou...

#FrontlinePhysics
May 22, 2026 at 2:30 PM
Der CERN-Rat hat den Future Circular Collider (FCC-ee) als bevorzugtes Nachfolgeprojekt für den LHC festgelegt. Eine finale Entscheidung wird für 2028 erwartet. #CERN
CERN-Rat beschließt Strategie-Update: FCC-ee soll LHC-Nachfolger werden
Der CERN-Rat hat den Future Circular Collider (FCC-ee) als bevorzugtes Nachfolgeprojekt für den LHC festgelegt. Eine finale Entscheidung wird für 2028 erwartet.
www.heise.de
May 23, 2026 at 11:42 AM
Have you read the new issue of #AcceleratingNews? 🧐

It features news on the High-Luminosity #LHC, the proposed electron-positron Future Circular Collider (FCC-ee), the ongoing update of the European Strategy for Particle Physics, alternative future colliders, events, and much more.
January 12, 2026 at 2:40 PM
La FCC aprobó un satélite espejo para proyectar luz solar nocturna, desatando alarmas científicas por contaminación lumínica e interferencia con observaciones astronómicas

Fuente: Scientific American

Te contamos:
cerebrodigital.net/ee-uu-pr...
September 25, 2026 at 3:00 AM
CERN-Rat beschließt Strategie-Update: FCC-ee soll LHC-Nachfolger werden
www.heise.de/news/CERN-Ra...
CERN-Rat beschließt Strategie-Update: FCC-ee soll LHC-Nachfolger werden
Der CERN-Rat hat den Future Circular Collider (FCC-ee) als bevorzugtes Nachfolgeprojekt für den LHC festgelegt. Eine finale Entscheidung wird für 2028 erwartet.
www.heise.de
May 27, 2026 at 2:01 AM
What collider do early career particle physicists in the US want?

We surveyed 100+, check out our input to the European strategy to find out!

Short answer : Lots of variety of opinion, but highest enthusiasm for a @muoncollider.bsky.social

arxiv.org/abs/2503.22834
April 1, 2025 at 1:30 PM
La FCC aprobó un satélite espejo ignorando daños ópticos. Críticos advierten que el despliegue masivo planeado causará grave contaminación lumínica, afectando ecosistemas e imposibilitando la observación astronómica desde la Tierra.

Scientific American

Te contamos:
cerebrodigital.net/ee-uu-pr...
July 27, 2026 at 2:01 PM
Disentangling $V_{ud}$ from New Physics in Beta Decays with the FCC-ee
https://arxiv.org/pdf/2609.31834
Lemonia Gialidi, Elie Hammou, Kamil Laurent, Vaisakh Plakkot, Juan Rojo, Jordy de Vries.
https://arxiv.org/abs/2609.31834
arXiv abstract link
arxiv.org
September 29, 2026 at 7:34 AM
Lemonia Gialidi, Elie Hammou, Kamil Laurent, Vaisakh Plakkot, Juan Rojo, Jordy de Vries: Disentangling $V_{ud}$ from New Physics in Beta Decays with the FCC-ee https://arxiv.org/abs/2609.31834 https://arxiv.org/pdf/2609.31834 https://arxiv.org/html/2609.31834
September 29, 2026 at 6:54 AM
You may wonder what happens next: CERN has until 2028 to develop a financially feasible funding plan, after which the Council, which is essentially all the science ministries of CERN countries, will make a final go/no-go decision on the FCC-ee project. 5/6
May 30, 2026 at 4:37 PM
The FCC-ee physics programme is immensely broad.

Conclusion from the FCC physics week:

indico.cern.ch/event/143950...
January 16, 2025 at 5:04 PM
Spectacular news! Theyre gonna build the FCC-ee Higgs factory to learn all we can about the central puzzle piece of the Standard Model!

But make no mistake: this will be viciously attacked by populists and it's our job as lovers of science to fight back against the rising tide of incurious cynicism
The CERN Council decided to update the European Strategy for Particle Physics #ESPP

🔗Find out more: home.cern/the-cern-cou...

#FrontlinePhysics
May 23, 2026 at 1:47 PM
Umar Sohail Qureshi, Benjamin Nachman, Caterina Vernieri: Parnassus for the CLD Detector: A Generative Machine-Learning Surrogate for Detector Simulation and Reconstruction at the FCC-ee https://arxiv.org/abs/2609.30775 https://arxiv.org/pdf/2609.30775 https://arxiv.org/html/2609.30775
September 28, 2026 at 6:58 AM
brb expressing the size of the Argentina bailout in FCC-ee units
October 15, 2025 at 11:40 PM
If you want to learn more about why it's such a great idea to build the FCC-ee, listen to our own @badboyofscience.bsky.social explain what it will bring!

youtu.be/xtJgh7yZHkk?...
The Physics Case For A New Higgs Factory Collider Is Undeniable
YouTube video by Bad Boy of Science
youtu.be
May 23, 2026 at 1:49 PM
@psich.bsky.social is designing the electron-positron injector for the FCC-ee.

At the recent Chamonix workshop they showed the positron production demonstration setup at the SwissFEL, on track for 2026.
February 5, 2025 at 10:46 PM
FCC-ee would be an electron-positron “Higgs factory that would produce millions of Higgs bosons in clean collisions, letting us measure it with a precision the LHC simply can't match. We’re talking about probing whether the Higgs is exactly what the Standard Model predicts 3/6
May 30, 2026 at 4:37 PM
"The FCC will only focus on hadron collisions like the LHC."

False!❌

FCC-ee (electron-positron collider) to study the Higgs boson and other fundamental particles with unmatched precision.
FCC-hh (hadron collider) to reach 100 TeV, far beyond the LHC’s 14 TeV.
March 24, 2025 at 10:16 AM
I have a personal connection to this milestone. About 8 years ago I was a convener on the FCC-ee physics studies, back when this was still very much a long-term dream. Being so close to this process from just a crazy idea to a CERN Council decision is very exciting 4/6
May 30, 2026 at 4:37 PM
Ironic story in 2 screenshots.
arxiv.org/abs/2603.15493
March 17, 2026 at 6:57 AM
Apropos of things government could spend money on, FCC-ee is something like $20 billion over 15 years
March 11, 2026 at 9:28 PM