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#CERN

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FreeCAD

Forged in FreeCAD: CERN CMS Detector Cable Clamps
In case it passed you by, over on our mastodon account and on the X platform we have run the hashtag #FreeCADFriday for a long time. It's a straightforward "show everyone what you are up to with FreeCAD" type affair and every week so many amazing projects show up as responses.
#CERN #FreeCAD #CAD #CMS #Muons
blog.freecad.org/2025/08/11/fo
#UserStory

FreeCAD News · Forged in FreeCAD: CERN CMS Detector Cable ClampsIn case it passed you by, over on our mastodon account and on the X platform we have run the hashtag #FreeCADFriday for a long time. It's a straightforward "show everyone what you are up to with Fr…
Coach Pāṇini ®

#RyojiIkeda: data-verse - #HighMuseum of #Art

high.org/exhibition/ryoji-iked

Ryoji Ikeda’s data-verse is an immersive #audiovisual trilogy considered his ultimate project, created by transforming vast scientific datasets into complex visual and sonic experiences.

It consists of three synchronized high-definition video projections with minimalist electronic soundtracks, exploring data from sources like #NASA, #CERN, and the #HumanGenomeProject.

(1/2)

High Museum of ArtRyoji Ikeda: data-verse
Stephen Brooks 🦆

Couple of interesting #physics news releases from #CERN:

Top-antitop quarks can briefly form a meson, if produced with low relative velocity. It had previously been assumed their lifetimes were too short to hadronise.
home.cern/news/press-release/p

Coherent superposition of an antiproton's spin has been produced, leading to more accurate measurements of antimatter.
home.cern/news/news/physics/qu
#accelerators

CERNElusive romance of top-quark pairs observed at the LHC An unforeseen feature in proton-proton collisions previously observed by the CMS experiment at CERN’s Large Hadron Collider (LHC) has now been confirmed by its sister experiment ATLAS. The result, reported yesterday at the European Physical Society’s High-Energy Physics conference in Marseille, suggests that top quarks – the heaviest and shortest-lived of all the elementary particles – can momentarily pair up with their antimatter counterparts to produce a “quasi-bound-state” called toponium. Further input based on complex theoretical calculations of the strong nuclear force -- called quantum chromodynamics (QCD) --  will enable physicists to understand the true nature of this elusive dance. High-energy collisions between protons at the LHC routinely produce top quark–antiquark pairs. Measuring the probability, or cross section, of this process is both an important test of the Standard Model of particle physics and a powerful way to search for the existence of new particles that are not described by the theory.  Last year, CMS researchers were analysing a large sample of top quark–antiquark production data collected from 2016 to 2018 to search for new types of Higgs bosons when they observed something unusual. The team saw a surplus of top quark–antiquark pairs, which is often considered as a smoking gun for the presence of new particles. Intriguingly, the excess appeared at the very minimum energy required to produce such a pair of top quarks. This led the team to consider an alternative hypothesis of something that had long been considered too difficult to detect at the LHC: a short-lived union of a top quark and a top antiquark. The top quark is typically a loner. While other quarks can get together to form bound states called hadrons, the top quark’s extremely short lifetime means that it typically decays almost instantly – disappearing before it can form a bound state. But quantum mechanics makes it possible for the top quark-antiquark pair to occasionally survive long enough that, if produced almost at rest with respect to each other, they can exchange gluons (messengers of the strong force) that bind them into the toponium state.  Basing itself on a simplified toponium production hypothesis, CMS measured the cross section for the top quark–antiquark excess to be 8.8 picobarns (pb) with an uncertainty of about 1.3 pb. This passed the “five sigma” level of certainty required to claim a discovery in particle physics and made it extremely unlikely that the excess over the background-only prediction is just a statistical fluctuation. “The observation of a non-relativistic QCD effect that was thought to be too difficult to detect is a great triumph for the LHC experiment programme,” said CMS spokesperson Gautier Hamel de Monchenault. “We keenly anticipate further rich interactions with our theory colleagues so that we may learn more about this fascinating corner of the Standard Model.”  In examining the full LHC Run-2 dataset collected from 2015 to 2018, the ATLAS collaboration has now seen the same effect. The ATLAS data rejects models that ignore the formation of a quasi-bound-state with a significance of 7.7 sigma and determines the production cross section of the top quark-antiquark excess to be 9.0± 1.3 pb, in close agreement with CMS.  While there is no doubt that an unforeseen phenomenon is present in the LHC data, the challenge is to be certain of its underlying cause. An alternative or additional possibility to the formation of toponium could be, for example, the existence of a new particle with a mass close to twice that of the top quark which is produced in collisions between gluons and decays to a top quark-antiquark pair. The conclusive interpretation of this new phenomenon will rely on accurate modelling of how quarks and gluons behave in the complex environment of high-energy proton-proton collisions, involving state-of-the art QCD calculations. “For a long time, it was considered experimentally unfeasible to measure this subtle effect at the LHC, since events close to the production threshold make up only a small fraction of the top-pairs produced and are difficult to spot in the data,” said ATLAS spokesperson Stéphane Willocq. “However, thanks to the wealth of proton-proton data recorded during Run 2 of the LHC and thanks to advances in analysis techniques, this long-held assumption is now being overturned.” If the toponium hypothesis is confirmed,  its discovery would add a new twist to the story of quarkonia– quarkonium is a term for unstable states formed from pairings of heavy quarks and antiquarks of the same flavour. Charmonium (charm–anticharm) was discovered in 1974, sparking the “November Revolution” in particle physics, and bottomonium (bottom–antibottom) was discovered three years later, both at laboratories in the United States. “These impressive results from ATLAS and CMS prove that there is still much to learn about the Standard Model of Particle Physics at high energies,” said CERN Director of Research and Computing, Joachim Mnich. “They show that high-precision measurements, many of which were never thought possible at a hadron collider, can reveal remarkably subtle phenomena that deepen our understanding of nature.” With the ongoing Run 3 of the LHC due to deliver significantly more data, the ATLAS and CMS collaborations are set to deepen the exploration of the strong force via top quark-antiquark interactions in the non-relativistic regime.  Links ATLAS Collaboration 2025 (ATLAS-CONF-2025-008): “Observation of a cross-section enhancement near the t¯t production threshold in √s=13 TeV pp collisions with the ATLAS detector” CMS Collaboration 2024 (TOP-24-007): "Observation of a pseudoscalar excess at the top quark pair production threshold" (Accepted for publication in Reports on Progress in Physics)
Continued thread
earthling

@palestine
2/
“As scientists, we cannot tolerate that the current state of war imposed by the Israeli government on Palestinians, alongside the unacceptable toll of lives and affront to human dignity, also compromises the continued peaceful collaboration of Israeli and Palestinian scientists between themselves, and with the rest of the community.”

#Gaza
#CERN
#news

earthling

Scientists petition CERN over Israel’s war on Gaza

More than 1,000 scientists have petitioned the European Organization for Nuclear Research (CERN) to take action over Israel’s war on Gaza, urging it to comply with its principles, including to “have no concern with work for military requirements”.
1/

@palestine
#Gaza
#CERN
#news

universeinthelab_en

🚀 Milestone in #antimatter research! For the first time, researchers from the #BASEcollaboration #CERN, HHU Düsseldorf and GSI/FAIR have made an antiproton oscillate back and forth between two spin states for almost a minute - and thus realized the world's first antimatter qubit!

The study has now been published in Nature Magazine.
gsi.de/en/start/news/details/2

GSIPublication in the scientific journal “Nature”: Milestone in antimatter researchThe BASE collaboration at the European Organization for Nuclear Research CERN in Geneva has achieved a breakthrough in antimatter research: For the first time, the researchers were able to let a single antiproton – the antimatter counterpart of a proton – oscillate between two spin quantum states in a controlled manner for almost a minute. The collaboration includes scientists from numerous international institutions, including researchers from Heinrich Heine University Düsseldorf (HHU) and GSI/FAIR...
#quantumphysics#research#Qubit
Ian Brown 👨🏻‍💻

“Who knew giving a ton of money to #CERN would lead to the #WWW? Who knew a Dutch free #OS (#minix) would incentivise a Finnish gradute student to write #Linux (the OS platform on most the cloud, half the smart phones out there)? Who knew that some small TV company (the #BBC) request for a simple low cost computer would lead to the founding of #ARM (that has more chips in the world than Intel or anyone else - again in your mobile device)?” 💯
From: @tforcworc
todon.nl/@tforcworc/1149025390

Todon.nljon crowcroft (@tforcworc@todon.nl)how to reform a national research institute. feel free to forward on other meeja/channels https://paravirtualization.blogspot.com/2025/07/how-to-reform-national-ai-institute.html
RTN

#UHH:
"
Plötzlich sichtbar: Neues Teilchen stellt alte Überzeugungen infrage
"
"Forschende der Universität Hamburg und des DESY haben Hinweise auf das schwer fassbare Toponium gefunden. Mit dieser Entdeckung könnte die grundlegende Struktur aller Materie noch detaillierter entschlüsselt werden."

uni-hamburg.de/newsroom/presse

17.7.2025

www.uni-hamburg.dePlötzlich sichtbar: Neues Teilchen stellt alte Überzeugungen infrage
#ATLAS#CERN#CMS
John A. Mulhall

🚀 CERN’s antimatter breakthrough is blurring the line between science and science fiction.

What if antimatter mobility isn’t just a concept—but a step toward real change in how we move, survive, and imagine the future?

As pollution surges and critical discoveries face suppression, we must explore bold scientific paths forward.

🔗 Full post: authormulhall.com/antimatter-a

Science isn’t just for the lab—it’s a lifeline. 🧬

Author Mulhall 📚 · Antimatter at CERN: Sci-Fi Dreams Meet Scientific RealityDiscover how antimatter bridges science fiction and real science, from Star Trek to CERN’s modern breakthroughs.
#CERN#FutureTech#ClimateCrisis
cpresser

#FreeCadFriday
This is my "two part cable clamp" which will get installed on the #CMS detector at #CERN.
It is part of the DT (drift tube) system that detects muons. The cable in the picture supplies power to the read out electronics.

The clamp bottom part has M5 threads and is pre installed. The installation of the cable only requires a driver for the M5 flange nut. Its quick and easy.
The design is parametric to allow different cable diameters.

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