CMS Experiment at CERN
@cmsexperiment.bsky.social
The CMS Experiment at CERN! Follow us as we study the fundamentals of the universe...
Find all our links here --> https://linktr.ee/cmsexperiment
Find all our links here --> https://linktr.ee/cmsexperiment
@UVA postdoc Bryan Cardwell and his colleagues on #CMSexperiment are working on an ultra-precise timing detector for the #HiLumiLHC that will give scientists a new way to look for slow-moving massive particles like dark matter.
November 21, 2025 at 2:28 PM
@UVA postdoc Bryan Cardwell and his colleagues on #CMSexperiment are working on an ultra-precise timing detector for the #HiLumiLHC that will give scientists a new way to look for slow-moving massive particles like dark matter.
🗨️Let’s talk about the PPS (Precision Proton Spectrometer), one of the CMS sub-detectors.
Nicola is ready to drop 3 fun facts about this special detector. How many did you already know?
Do you want to learn more about PPS? We got you covered: youtu.be/WyuQaxvpnNM?...
Nicola is ready to drop 3 fun facts about this special detector. How many did you already know?
Do you want to learn more about PPS? We got you covered: youtu.be/WyuQaxvpnNM?...
November 20, 2025 at 2:16 PM
🗨️Let’s talk about the PPS (Precision Proton Spectrometer), one of the CMS sub-detectors.
Nicola is ready to drop 3 fun facts about this special detector. How many did you already know?
Do you want to learn more about PPS? We got you covered: youtu.be/WyuQaxvpnNM?...
Nicola is ready to drop 3 fun facts about this special detector. How many did you already know?
Do you want to learn more about PPS? We got you covered: youtu.be/WyuQaxvpnNM?...
Reposted by CMS Experiment at CERN
CERN celebrates LGBTQ+ in STEM Day
Today we celebrate and highlight the work of and barriers facing LGBTQIA+ people in science, technology, engineering and maths. To mark the date, the Progress Pride flag will fly above the Esplanade des Particules for the third year.
🔗 home.cern/news/news/ce...
Today we celebrate and highlight the work of and barriers facing LGBTQIA+ people in science, technology, engineering and maths. To mark the date, the Progress Pride flag will fly above the Esplanade des Particules for the third year.
🔗 home.cern/news/news/ce...
November 18, 2025 at 1:51 PM
CERN celebrates LGBTQ+ in STEM Day
Today we celebrate and highlight the work of and barriers facing LGBTQIA+ people in science, technology, engineering and maths. To mark the date, the Progress Pride flag will fly above the Esplanade des Particules for the third year.
🔗 home.cern/news/news/ce...
Today we celebrate and highlight the work of and barriers facing LGBTQIA+ people in science, technology, engineering and maths. To mark the date, the Progress Pride flag will fly above the Esplanade des Particules for the third year.
🔗 home.cern/news/news/ce...
Reposted by CMS Experiment at CERN
Happy #PrideinSTEMDay! 🏳️🌈🏳️⚧️
ATLAS proudly celebrates the incredible diversity of our scientific community. Our varied backgrounds, perspectives and identities drive excellence in research. We are committed to advancing the recognition and representation of our LGBTQ+ colleagues — today and every day.
ATLAS proudly celebrates the incredible diversity of our scientific community. Our varied backgrounds, perspectives and identities drive excellence in research. We are committed to advancing the recognition and representation of our LGBTQ+ colleagues — today and every day.
November 18, 2025 at 3:08 PM
Happy #PrideinSTEMDay! 🏳️🌈🏳️⚧️
ATLAS proudly celebrates the incredible diversity of our scientific community. Our varied backgrounds, perspectives and identities drive excellence in research. We are committed to advancing the recognition and representation of our LGBTQ+ colleagues — today and every day.
ATLAS proudly celebrates the incredible diversity of our scientific community. Our varied backgrounds, perspectives and identities drive excellence in research. We are committed to advancing the recognition and representation of our LGBTQ+ colleagues — today and every day.
Happy #PrideInSTEMDay! 🏳️🌈
Today we celebrate all our colleagues and their identities, and raise the inclusive pride flag in recognition of all members of the LGBTQIA+ community who have contributed and who continue to contribute to STEM 🌈
Today we celebrate all our colleagues and their identities, and raise the inclusive pride flag in recognition of all members of the LGBTQIA+ community who have contributed and who continue to contribute to STEM 🌈
November 18, 2025 at 1:55 PM
Happy #PrideInSTEMDay! 🏳️🌈
Today we celebrate all our colleagues and their identities, and raise the inclusive pride flag in recognition of all members of the LGBTQIA+ community who have contributed and who continue to contribute to STEM 🌈
Today we celebrate all our colleagues and their identities, and raise the inclusive pride flag in recognition of all members of the LGBTQIA+ community who have contributed and who continue to contribute to STEM 🌈
Throwback to the ECAL electronics testing for the #HiLumiLHC on the spare SuperModule 36 at #CERN!
Preparing for the ECAL test beam with the latest upgrade version to verify it meets HiLumi LHC requirements.
🏆 ECAL Image of the Month
📸 Matteo Migliorini
Preparing for the ECAL test beam with the latest upgrade version to verify it meets HiLumi LHC requirements.
🏆 ECAL Image of the Month
📸 Matteo Migliorini
November 18, 2025 at 8:59 AM
Throwback to the ECAL electronics testing for the #HiLumiLHC on the spare SuperModule 36 at #CERN!
Preparing for the ECAL test beam with the latest upgrade version to verify it meets HiLumi LHC requirements.
🏆 ECAL Image of the Month
📸 Matteo Migliorini
Preparing for the ECAL test beam with the latest upgrade version to verify it meets HiLumi LHC requirements.
🏆 ECAL Image of the Month
📸 Matteo Migliorini
👉 From celebrating the World Wide Web's local pioneers to exploring the CMS experiment site, see how science and community connected for this year's #FêteDeLaScience: cms.cern/news/fete-de...
November 12, 2025 at 1:31 PM
👉 From celebrating the World Wide Web's local pioneers to exploring the CMS experiment site, see how science and community connected for this year's #FêteDeLaScience: cms.cern/news/fete-de...
From brainstorming sessions to hands-on coding, the #2ndNGTHackathon brought together more than 40 physicists, engineers, data scientists and other experts from #NextGenTruggers CMS Collaboration, ATLAS Collaboration to explore innovative ideas for the upgrade of the trigger systems for HiLumiLHC.
November 11, 2025 at 10:23 AM
From brainstorming sessions to hands-on coding, the #2ndNGTHackathon brought together more than 40 physicists, engineers, data scientists and other experts from #NextGenTruggers CMS Collaboration, ATLAS Collaboration to explore innovative ideas for the upgrade of the trigger systems for HiLumiLHC.
A chilly winter is coming for Tom and Jerry! 🥶
Their namesake cold boxes at Point 5 are getting prepped with their safety system junction boxes. Soon, they'll be chilling the future cassettes of the HGCAL calorimeter to a frosty -35 °C for testing!
🏆 HGCAL Image of the Month
📸 Ebru Simsek
Their namesake cold boxes at Point 5 are getting prepped with their safety system junction boxes. Soon, they'll be chilling the future cassettes of the HGCAL calorimeter to a frosty -35 °C for testing!
🏆 HGCAL Image of the Month
📸 Ebru Simsek
November 7, 2025 at 4:08 PM
A chilly winter is coming for Tom and Jerry! 🥶
Their namesake cold boxes at Point 5 are getting prepped with their safety system junction boxes. Soon, they'll be chilling the future cassettes of the HGCAL calorimeter to a frosty -35 °C for testing!
🏆 HGCAL Image of the Month
📸 Ebru Simsek
Their namesake cold boxes at Point 5 are getting prepped with their safety system junction boxes. Soon, they'll be chilling the future cassettes of the HGCAL calorimeter to a frosty -35 °C for testing!
🏆 HGCAL Image of the Month
📸 Ebru Simsek
Huge congratulations to former CMS Spokesperson Joel Butler, recipient of the 2026 APS Panofsky Prize in Experimental Particle Physics! 👏
➡ Read more: cms.cern/news/cms-phy...
➡ Read more: cms.cern/news/cms-phy...
November 6, 2025 at 4:08 PM
Huge congratulations to former CMS Spokesperson Joel Butler, recipient of the 2026 APS Panofsky Prize in Experimental Particle Physics! 👏
➡ Read more: cms.cern/news/cms-phy...
➡ Read more: cms.cern/news/cms-phy...
Reposted by CMS Experiment at CERN
Proton collisions at the LHC end on a high(-luminosity) note 💫
During this year, an exceptional volume of data was collected at a collision energy of 13.6 teraelectronvolts (TeV).
Watch to find out more about what this means. 👇
During this year, an exceptional volume of data was collected at a collision energy of 13.6 teraelectronvolts (TeV).
Watch to find out more about what this means. 👇
November 6, 2025 at 11:00 AM
Proton collisions at the LHC end on a high(-luminosity) note 💫
During this year, an exceptional volume of data was collected at a collision energy of 13.6 teraelectronvolts (TeV).
Watch to find out more about what this means. 👇
During this year, an exceptional volume of data was collected at a collision energy of 13.6 teraelectronvolts (TeV).
Watch to find out more about what this means. 👇
Reposted by CMS Experiment at CERN
First observation of single top quark production with W and Z bosons
This incredibly rare phenomenon, observed at the @cmsexperiment.bsky.social, can help probe the fundamental forces of nature.
Find out more: home.cern/news/news/ph...
This incredibly rare phenomenon, observed at the @cmsexperiment.bsky.social, can help probe the fundamental forces of nature.
Find out more: home.cern/news/news/ph...
November 4, 2025 at 1:12 PM
First observation of single top quark production with W and Z bosons
This incredibly rare phenomenon, observed at the @cmsexperiment.bsky.social, can help probe the fundamental forces of nature.
Find out more: home.cern/news/news/ph...
This incredibly rare phenomenon, observed at the @cmsexperiment.bsky.social, can help probe the fundamental forces of nature.
Find out more: home.cern/news/news/ph...
The first tray, assembled at Peking University, has arrived at CERN in late September! The BTL team was eager to unbox the tray, packaged in a wooden crate, padded with foam, suspended on vibration damping feet and wrapped in anti-static foil.
🏆 MTD Image of the Month
📸 Nefeli Stathaki
🏆 MTD Image of the Month
📸 Nefeli Stathaki
November 4, 2025 at 1:39 PM
The first tray, assembled at Peking University, has arrived at CERN in late September! The BTL team was eager to unbox the tray, packaged in a wooden crate, padded with foam, suspended on vibration damping feet and wrapped in anti-static foil.
🏆 MTD Image of the Month
📸 Nefeli Stathaki
🏆 MTD Image of the Month
📸 Nefeli Stathaki
👂What if we could hear the data from particle collisions? Or what if we could hear the gaps where dark matter could be hidden?
A year on from his performance of sonified data at CMS, artist Chris Henschke reflects on the experience and where it took him
👉 cylindricalonion.web.cern.ch/blogs/dark-w...
A year on from his performance of sonified data at CMS, artist Chris Henschke reflects on the experience and where it took him
👉 cylindricalonion.web.cern.ch/blogs/dark-w...
November 3, 2025 at 4:54 PM
👂What if we could hear the data from particle collisions? Or what if we could hear the gaps where dark matter could be hidden?
A year on from his performance of sonified data at CMS, artist Chris Henschke reflects on the experience and where it took him
👉 cylindricalonion.web.cern.ch/blogs/dark-w...
A year on from his performance of sonified data at CMS, artist Chris Henschke reflects on the experience and where it took him
👉 cylindricalonion.web.cern.ch/blogs/dark-w...
Reposted by CMS Experiment at CERN
You searched, we answered (#CERNLibrary Edition) 🗣️
In celebration of #DarkMatterDay, we invited Kyungmin from the @cmsexperiment.bsky.social to address some of the web’s most searched questions about #DarkMatter.
In celebration of #DarkMatterDay, we invited Kyungmin from the @cmsexperiment.bsky.social to address some of the web’s most searched questions about #DarkMatter.
October 31, 2025 at 1:59 PM
You searched, we answered (#CERNLibrary Edition) 🗣️
In celebration of #DarkMatterDay, we invited Kyungmin from the @cmsexperiment.bsky.social to address some of the web’s most searched questions about #DarkMatter.
In celebration of #DarkMatterDay, we invited Kyungmin from the @cmsexperiment.bsky.social to address some of the web’s most searched questions about #DarkMatter.
Huge congratulations to the 2025 CMS Young Researcher Prize winners announced during CMS week! 🏆
The winners are: Cécile Caillol, Elisabetta Manca, Mario Masciovecchio, Jennifer Ngadiuba! 👏
Click the link to read about their research:
cmsexperiment.web.cern.ch/news/young-r...
The winners are: Cécile Caillol, Elisabetta Manca, Mario Masciovecchio, Jennifer Ngadiuba! 👏
Click the link to read about their research:
cmsexperiment.web.cern.ch/news/young-r...
Young Researcher Prize 2025 - The Winners | CMS Experiment
cmsexperiment.web.cern.ch
October 29, 2025 at 1:44 PM
Huge congratulations to the 2025 CMS Young Researcher Prize winners announced during CMS week! 🏆
The winners are: Cécile Caillol, Elisabetta Manca, Mario Masciovecchio, Jennifer Ngadiuba! 👏
Click the link to read about their research:
cmsexperiment.web.cern.ch/news/young-r...
The winners are: Cécile Caillol, Elisabetta Manca, Mario Masciovecchio, Jennifer Ngadiuba! 👏
Click the link to read about their research:
cmsexperiment.web.cern.ch/news/young-r...
🥇In a remarkable first, CMS observes a process that happens only once in a trillion proton-proton collisions – the creation of a top quark together with a W and a Z boson. 😮
Read the full briefing here: cms.cern/news/cms-obs...
Read the full briefing here: cms.cern/news/cms-obs...
October 27, 2025 at 12:06 PM
🥇In a remarkable first, CMS observes a process that happens only once in a trillion proton-proton collisions – the creation of a top quark together with a W and a Z boson. 😮
Read the full briefing here: cms.cern/news/cms-obs...
Read the full briefing here: cms.cern/news/cms-obs...
🤯206 collisions in one bunch crossing! Usually, we see around 60 collisions every time a bunch of protons meet another, so this is a test of a very special kind for the High Luminosity phase!
😍This is what the CMS detector captures during events such as these! 😍
🎞️Tom McCauley
😍This is what the CMS detector captures during events such as these! 😍
🎞️Tom McCauley
October 23, 2025 at 12:41 PM
🤯206 collisions in one bunch crossing! Usually, we see around 60 collisions every time a bunch of protons meet another, so this is a test of a very special kind for the High Luminosity phase!
😍This is what the CMS detector captures during events such as these! 😍
🎞️Tom McCauley
😍This is what the CMS detector captures during events such as these! 😍
🎞️Tom McCauley
Did you miss our live virtual visit? No problem!
You can watch it on our YouTube channel by clicking the link!
www.youtube.com/live/7CL6qoN...
You can watch it on our YouTube channel by clicking the link!
www.youtube.com/live/7CL6qoN...
CMS Virtual Visit for the European Researchers' Night 2025
YouTube video by CMS Experiment
www.youtube.com
October 22, 2025 at 2:38 PM
Did you miss our live virtual visit? No problem!
You can watch it on our YouTube channel by clicking the link!
www.youtube.com/live/7CL6qoN...
You can watch it on our YouTube channel by clicking the link!
www.youtube.com/live/7CL6qoN...
What's it like for a 16-year-old from Spain to land a job-shadowing internship at CMS?
Palma's diary is a must-read: ➡️Descending into the CMS cavern ➡️Working with CMS physicists ➡️Seeing the Antimatter Factory!
✍️ Read her incredible week-long adventure: cylindricalonion.web.cern.ch/blogs/how-yo...
Palma's diary is a must-read: ➡️Descending into the CMS cavern ➡️Working with CMS physicists ➡️Seeing the Antimatter Factory!
✍️ Read her incredible week-long adventure: cylindricalonion.web.cern.ch/blogs/how-yo...
October 20, 2025 at 1:16 PM
What's it like for a 16-year-old from Spain to land a job-shadowing internship at CMS?
Palma's diary is a must-read: ➡️Descending into the CMS cavern ➡️Working with CMS physicists ➡️Seeing the Antimatter Factory!
✍️ Read her incredible week-long adventure: cylindricalonion.web.cern.ch/blogs/how-yo...
Palma's diary is a must-read: ➡️Descending into the CMS cavern ➡️Working with CMS physicists ➡️Seeing the Antimatter Factory!
✍️ Read her incredible week-long adventure: cylindricalonion.web.cern.ch/blogs/how-yo...
What is the CMS Precision Proton Spectrometer?
Learn about it on our YouTube channel by clicking the link!
youtu.be/WyuQaxvpnNM?...
Learn about it on our YouTube channel by clicking the link!
youtu.be/WyuQaxvpnNM?...
What is the CMS Precision Proton Spectrometer?
YouTube video by CMS Experiment
youtu.be
October 17, 2025 at 12:31 PM
What is the CMS Precision Proton Spectrometer?
Learn about it on our YouTube channel by clicking the link!
youtu.be/WyuQaxvpnNM?...
Learn about it on our YouTube channel by clicking the link!
youtu.be/WyuQaxvpnNM?...
Teaching machines to see the invisible: In a first-of-its-kind search at a particle collider, the CMS experiment uses physics-informed machine learning to look for partially visible sprays of particles (jets), containing leptons and dark matter 🌌
👉 Read more: cms.cern/news/using-p...
#physics
👉 Read more: cms.cern/news/using-p...
#physics
October 10, 2025 at 1:48 PM
Teaching machines to see the invisible: In a first-of-its-kind search at a particle collider, the CMS experiment uses physics-informed machine learning to look for partially visible sprays of particles (jets), containing leptons and dark matter 🌌
👉 Read more: cms.cern/news/using-p...
#physics
👉 Read more: cms.cern/news/using-p...
#physics
The vacuum plate secures 13 types of HGCAL cooling plates for precise machining. The groove enables air evacuation, while the black line indicates the sealing gasket ensuring tightness.
🏆HGCAL Image of the Month
📸Florian Baudette
🏆HGCAL Image of the Month
📸Florian Baudette
October 9, 2025 at 2:32 PM
The vacuum plate secures 13 types of HGCAL cooling plates for precise machining. The groove enables air evacuation, while the black line indicates the sealing gasket ensuring tightness.
🏆HGCAL Image of the Month
📸Florian Baudette
🏆HGCAL Image of the Month
📸Florian Baudette
Clash of the Titans: CMS has measured the rate at which top quark pairs are produced in lead-lead collisions with unprecedented precision.
📍Read more: cms.cern/news/clash-t...
📍Read more: cms.cern/news/clash-t...
October 8, 2025 at 8:20 AM
Clash of the Titans: CMS has measured the rate at which top quark pairs are produced in lead-lead collisions with unprecedented precision.
📍Read more: cms.cern/news/clash-t...
📍Read more: cms.cern/news/clash-t...
If you're near Cessy (France), tomorrow, don't miss the chance to learn about CERN and the CMS experiment! #FêtedelaScience
October 7, 2025 at 2:43 PM
If you're near Cessy (France), tomorrow, don't miss the chance to learn about CERN and the CMS experiment! #FêtedelaScience