Two researchers in blue cleanroom suits, orange hard hats, and safety glasses work inside the DEAP-3600 detector infrastructure, surrounded by metal supports, cables, and tubing. One adjusts equipment connected to the detector while the other assists.

Behind the scenes: #DEAP3600 team members from Carleton are visiting the detector site to support hardware upgrades, including pumping out the argon dewar vacuum jacket. The overall plan is to slowly cool the acrylic vessel with injections of argon gas and prepare to deploy the dust removal system.

Graphic announcement on a purple gradient background: left side shows a close-up photo of the DEAP-3600 detector interior; right side has a large white panel with the text “NEW PAPER” and “Phys. Rev. D.” A circular DEAP-3600 logo appears in the top-right corner, and “deap3600-outreach@snolab.ca” is written along the bottom.

Our new paper accepted in Phys. Rev. D!
We measured how radon daughters ²¹⁰Pb/²¹⁰Po diffuse in Nylon-6 - much faster at high humidity - informing ultra-low-background detectors for dark matter & neutrinos.
Read: doi.org/10.1103/jtn3...
#DEAP3600

Wishing you a new year full of bright moments and exciting results!
#darkmatter #2026 #DEAP3600

Young researcher giving a DEAP-3600 dark matter talk at CPAN Days, standing beside a slide titled “More physics with DEAP” in a full lecture room.

Guillermo Vera Díaz (CIEMAT) presented the latest #DEAP3600 status after its third liquid argon fill at #CPANDays (19–21 Nov), sharpening the search for #darkmatter and rare events within the Global Argon Dark Matter Collaboration.

Four members of the DEAP-3600 Queen’s group stand smiling behind a table at the McDonald Institute. The table displays electronic equipment used for demonstrations. Next to them is a DEAP-3600 poster, and two members are holding 3D-printed models of the detector used to explain dark matter research.

🛡️⚔️ Four knights of #darkmatter from Queen’s team joined McDonald Institute for #DarkMatterDay on the 8 Nov, hosting a booth on #DEAP3600 & future liquid argon detectors 🔦✨ Our contribution to a global outreach initiative.
@mcdonaldinstitute.bsky.social @queensuresearch.bsky.social

A man with headphones smiles at the camera while holding a gray-and-white cat sitting on his chest. A map of Japan is visible on the wall in the background.

👋 Meet Peter Taylor — a new student joining the #DEAP3600 team! He’ll be working on designing the new cryostat to be built and tested at Queen’s University, and on low-level data analysis for one of the beta-backgrounds. Welcome, Peter! ✨
@queensuresearch.bsky.social

Group photo of 33 DEAP-3600 collaboration members standing on a small stage in front of a black curtain at Carleton University. The group includes men and women of different ages, dressed casually, smiling at the camera.

10–13 Aug 2025, the DEAP-3600 team gathered at Carleton University — in person and online — to exchange results, spark ideas, and set new goals. These face-to-face moments keep our collaboration strong in the hunt for #darkmatter’s secrets.
#DEAP3600 #meetings
@carleton.ca

Graphic showing the DEAP-3600 detector at SNOLAB with text reading “Direct measurement of the ³⁹Ar half-life from 3.4 years of data with the DEAP-3600 detector,” along with DEAP-3600 logo and contact email.

One of our recent publications appeared in EPJ C last month. Using 3.4 years of data, the #DEAP3600 experiment measured the half-life of a 39Ar isotope—and found it’s significantly longer than expected.
📄 inspirehep.net/literature/2...
@inspirehep.net @snolabscience.bsky.social #darkmatter

Canadian Science Publishing

🤩DEAP-3600 on the cover!
The iconic image of our detector is featured in the August 2025 special edition of the Canadian Journal of Physics - Astroparticle Physics in Canada. #darkmatter, #neutrinos & more!
🔗 cdnsciencepub.com/toc/cjp/103/8
#DEAP3600 #Astrophysics @snolabscience.bsky.social

A person giving a lecture in a modern auditorium at Durham University. The projected slide is about the DEAP-3600 dark matter detector located at SNOLAB in Sudbury, Ontario, showing the SNOLAB building, an underground map, and a graph of cosmic ray flux versus depth.

🎤 One more talk on #DEAP3600 recent results and ongoing work was given by Pushparaj Adhikari (Carleton U.) at #PASCOS2025, July 21–25, in Durham, UK. PASCOS brings together cutting-edge research in astroparticle physics, string theory, and cosmology, highlighting their deep interconnections.

A conference room with a large screen displaying a presentation slide titled “Latest Results and Future Prospects of DEAP-3600” by Abhijit Garai, on behalf of the DEAP-3600 collaboration, at ICRC 2025 in Geneva, Switzerland.

Today, Abhijit Garai, on behalf of collaboration presented “Latest Results and Future Prospects of #DEAP3600” at #ICRC2025 (Geneva, July 15–24).
The ICRC is held biennially and brings together experts on #cosmicrays, #darkmatter, #neutrinos & more.

Person presenting a slide titled “An Introduction to DEAP-3600” on a large screen in a conference room. The slide includes information about the experiment's location, construction, and timeline milestones. Windows and wall art are visible in the background.

Person pointing to a complex data slide titled “Degraded-energy alpha background” during a scientific presentation. The room has large windows, and an audience member is partially visible in the foreground.

🔭 DEAP-3600 is at #CIPANP2025.
8-13 June, Daniel Huff (@uh.edu) and Abhijit Garai (Queen's U.) are in Madison (University of Wisconsin), sharing the latest on #darkmatter and neutrino research with liquid argon.
Well done! 🌌
#DEAP3600

Promotional graphic for the DarkSide-20k Collaboration Meeting held 2–6 June 2025 in Sardinia, Italy, featuring the DEAP-3600 logo. Includes contact: deap3600-outreach@snolab.ca

🔍 #DEAP3600 was featured at the #DarkSide collaboration meeting (2–6 June, Sardinia).
Emma Ellingwood presented results on charged current neutrino interactions in ⁴⁰Ar - an exciting look into the detector’s extended capabilities.
#darkmatter #neutrino

Roughly forty workshop participants wearing blue lanyards cluster in the atrium of a modern research facility, smiling up at the camera; a reception desk with monitors is on the left and glass entrance doors on the right.

In a clean-room, a speaker in blue coveralls and a hairnet stands beside a slide titled “The way forward in the search for neutrinoless double beta decay” while about a dozen similarly suited colleagues sit at tables with boxed lunches, notebooks and laptops, listening intently.

Sixteen scientists in blue clean-room suits, safety glasses and orange or white hard hats pose shoulder-to-shoulder on a yellow metal platform inside an underground cavern, beaming at the camera.

Last week DEAP-3600 shone at SNOLAB Future Projects Workshop✨. Chris Jillings gave a full talk on the detector, while Michela Lai (UC Riverside) and Mark Boulay (Carleton) also spotlighted #DEAP3600 in their broader presentations.
@ucriverside.bsky.social @snolabscience.bsky.social @carleton.ca

A smiling man wearing a yellow hard hat stands in front of a large industrial red structure. On the right, a blue box with white text reads "PhD Thesis Successfully Defended!" Logos of Universidad Zaragoza, CIEMAT, and DEAP-3600 appear at the bottom.

Congratulations to Dr. Ludovico Luzzi from the #DEAP3600 team on successfully defending his PhD at the University of Zaragoza with Cum Laude distinction! Wishing you all the best in your career ahead, Ludovico!
@cfp-ciemat.bsky.social @www.unizar.es

A group of 15 smiling students and researchers standing in a classroom in front of a projector screen displaying the title slide of a presentation: 'The Search for Dark Matter DEAP Underground'. The group includes a mix of men and women, casually dressed, with one person giving a thumbs-up. The whiteboards and classroom tables are visible in the photo.

Big thanks to the Carleton Undergraduate Physics Society for hosting a fantastic “Pizza and Profs” night (now featuring grad students too!) last week 🍕 Michael Perry, PhD candidate at @carleton.ca and member of the #DEAP3600 collaboration, gave an engaging talk on #darkmatter and our experiment.

🌟 Four incredibly productive days at the University of California, Riverside! 🌟
A huge thank you to everyone who participated - both in person and online. Your insights, discussions, and energy made this event truly inspiring! 🚀💡
#deap3600 #collaborationmeeting
@UCRiverside

Two men wearing blue protective suits and hard hats are working together on a green argon pump placed on a red cart in an industrial workspace. Shelves with equipment and tools are visible in the background.

🚀 More pics from the recent #DEAP3600 upgrade. A new argon pump is being prepared for the DEAP purification system by our team members, Cedrik and Dylan.
Photo: Sean Daugherty

Shining a Light on the Dark 🖤✨
On the International Day of Women and Girls in Science, we celebrate the brilliant women of #DEAP3600, pushing the frontiers of #darkmatter research. Your dedication to unraveling the universe's deepest mysteries inspires us all! 🌌 #womeninscience

Solve the riddle of #darkmatter... one piece at a time! 😃
#deappuzzle #sciencecommunication #outreach #deap3600
@mcdonaldinstitute.bsky.social

✅ XVI CPAN Days wrapped up at
@ucm.es! Ludovico Luzzi presented #DEAP3600: Study of the energy response and position reconstruction with Na-22 source in DEAP-3600. Great discussions on the future of particle physics in Spain! #CPANDays

The #LRT2024 workshop kicked off today in Krakow 🇵🇱. The event explores low-radioactivity materials & techniques fundamental for rare-event searches, including #darkmatter 🌌. #DEAP3600 upgrade will be presented by Chris Jillings (
@snolabscience.bsky.social / @laurentianu.bsky.social).

Flashback to the #DEAP3600 collaboration meeting at
@SNOLABscience
in August 2024! Inspiring discussions, an exchange of ideas, and fantastic teamwork. Here's a group photo to remind us of what we can achieve together 💪

🎉Congratulations to our colleague Andrew Erlandson for successfully defending his thesis! 🎓
Andrew's work focused on muon-induced backgrounds in #DEAP3600 and a search for charged current solar neutrino interactions on argon. Great job!💪
#Neutrino #DarkMatter

🚀 #DEAP3600 uses liquid argon to detect #darkmatter by capturing UV light emitted during particle interactions. @queensuResearch 's student Aarchi Shan contributed to hardware upgrades and analyzed key data, focusing on flasher events. She presented her work at #CASST24 🔬✨

In the effort to detect #WIMPs, one of the candidates for #darkmatter, #DEAP3600 detector has been designed for use in extremely low levels of radioactivity, 2 km underground. This summer, Cheyanne Monk assisted in hardware improvements and developed code for analysis. #CASST

🎉 Here are a few slides from Matt Poser, who won 3rd place in the #CASST talk competition, showcasing a phenomenon known as a "flasher event." Congratulations, Matt! The future of physics is in good hands! 😉 #DEAP3600 #CASST2024 #AstroparticlePhysics

🌟Such a great time at #CASST competition at @LaurentianU! #DEAP3600 was represented by Ayesha Iqbal and Trang Bui (@SNOLABscience /LU), Cheyanne Monk (@CarletonScience), Rory Macdonald, Matt Poser and Aarchi Shah (Queen's). Huge thanks to organisers! @McDonaldInst

🌟 The next DEAP-3600 collaboration meeting will take place at @SNOLABscience in Sudbury, from August 13th to 16th! 🚀

Looking forward to fruitful discussions and advancements in our search for #darkmatter! #DEAP3600 #astrophysics

The #DEAP3600 Collaboration is now on twitter!
We search for #DarkMatter using a liquid argon detector placed 2000m underground at SNOLAB, Canada (@SNOLABscience).
Below a picture from our last collaboration meeting at the Technical University of Munich.