No biking today

First time our baby boy slept through the night

The Utrecht morning rush hour in the snow did not disappoint!

Spot the ☃️! Pic by @mjkraan.bsky.social

Collaboration of collaborations

Alright, back to PhD theses reading 🤓

Ready for the new year

I had to wait for 2 hours, but managed to register for the 21k race of the TCS Amsterdam Marathon 2026 www.tcsamsterdammarathon.eu/program

Zin in deeltjes? Moet je hier wezen. www.nikhef.nl/evenement/ou...

For the first time private donors pledge significant funding for a major project at CERN: 860M CHF for the FCC (if approved). home.cern/news/press-r...

The CERN Council has released the recommendations of the European Strategy for Particle Physics. These were finalised in early December during a session in Ancona, Switzerland. www.nikhef.nl/en/news/euro...

Done: 2 out of 4 CrossCup runs 🏃‍♂️

European particle physics strategy update summary 😅

Mijn favoriete spanbord vandaag las "Bezuinig dan op Microsoft Teams” ❤️

... en daarna op bezoek bij @nikhef.bsky.social (nederlands instituut voor deeltjesfysica), waar o.a. het world wide web mede is 'uitgevonden' (nikhef.nl was in 1992 één van de drie internetsite ter wereld; de andere waren cern en slac)

Always happy to read this

It's a wrap! No more #LHC collisions this year - it's time for the "year end technical stop" op-webtools.web.cern.ch/vistar/

Since I'm home sick and X-Twitter may soon expect me to pay for access, I am going to recreate this here: 🎢 ⚛️ Pedro Pascal as classic physics textbooks: a thread

Zie de maan schijnt door de bomen 🌕

Congratulations Dr.Feng! 👩🏻‍🎓

Today I’m at Radboud University Nijmegen for the PhD defense of our Nikhef student Zhuoran Feng 👩🏻‍🎓

Heavy-ion season underway 💪 On 14 November at 3:40 pm, a new #HeavyIon run started at the Large Hadron Collider, colliding lead ions at an energy of 5.36 TeV per nucleon pair.

Good morning

Decrease of AI students in Amsterdam

This Wednesday, I lecture in Maastricht on the research of the Higgs boson. Let me know if you're around!

Mmm, what was celebrated? 🤔

Altijd je gokkende voetballers schorsen in hele machten van 2 🤓 www.nu.nl/voetbal/6375...

🥳

CERN Council reviews feasibility study for a next-generation collider At a meeting of the #CERN Council on 6-7 November, delegates from CERN’s Member and Associate Member States reviewed the outcome of the Feasibility Study for the proposed Future Circular Collider. 🔗 home.cern/news/news/ac...

Today I run the Almere Crosscup 🏃‍♂️

Ik woon naast een “circulaire” rotonde www.omroepflevoland.nl/nieuws/44775...

🚨 New LHC record 🚨 The Large Hadron Collider produced more collisions in 2025 than in any previous year!

And detectors for LHC!

Great news for the LHC experiments, and more generally for faster detectors www.nikhef.nl/en/news/nwo-...

👩‍🎓 This month we have a beautiful pair of PhD defenses on H->bb and H->cc

Awesome combined HH constraints from ATLAS+CMS 🌐🤝🛑

Nikhef 5️⃣0️⃣ years

Should I write a paper on LEP4?

Interesting new results by @cmsexperiment.bsky.social in the study of 1-Higgs, 2-Higgs, and 3-Higgs production

🎵 Snow on the Jura 🎵🎸

Can I do a 2-factor authentication for all my devices for all my favourite websites in one go each morning?

No large particle collider in China in the near future. "CEPC will not be considered for inclusion in China’s next five-year plan (2026–2030)" ⚛️🧪 cerncourier.com/a/cepc-matur...

Wow. Really significant setback for CEPC, which many were worried would cannibalize FCC, or hoped would spur a muon collider in the US.

“We plan to submit CEPC for consideration again in 2030, unless FCC is officially approved before then, in which case we will seek to join FCC, and give up CEPC.”

Finally the rumours become public: The CEPC Chinese collider project is on hold. cerncourier.com/a/cepc-matur...

CepC proposal will not be included in China’s next 5-year plan cerncourier.com/cepc-matures...

It's time for @lievenscheire.bsky.social's annual wintertime procedure

Will 2025 be a another record year for the LHC?