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DEAP-3600
@deap3600.bsky.social
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The official profile of the DEAP-3600 Collaboration: Dark Matter experiment using Argon Pulse Shape Discrimination at SNOLAB, Canada
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deap3600.bsky.social
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.
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.
November 24, 2025 at 8:29 AM
Reposted by DEAP-3600
snolabscience.bsky.social
❄️ Having a chill start to the week at SNOLAB!

SNOLAB uses a special technique to measure trace amounts of radon in infrastructure and experiments in the underground laboratory. This method, a radon assay, requires cryogenic temperatures to make it work.

📸 Photo by Gerry Kingsley
November 17, 2025 at 5:00 PM
deap3600.bsky.social
🛡️⚔️ 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
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.
November 12, 2025 at 9:12 AM
deap3600.bsky.social
Our team presented updates on the #DEAP-3600 experiment and progress toward #ARGO at #LIDINE2025 conference, held October 21–24 in Hong Kong. Talks by Susnata Seth and Asish Moharana showcased recent advances in dark matter detection.
Group photo of participants at the LIDINE 2025 conference seated in a large meeting room, smiling toward the camera. The conference banner reads “LIDINE 2025 – Light Detection in Noble Elements.” A researcher gives a presentation at a conference, holding a microphone and a pointer while standing near a podium labeled “Sheraton Hong Kong Hotel.” A projected slide is partially visible in the background. A researcher presents a talk titled “Optical modeling of pixelated digital SiPMs for ARGO” at the LIDINE 2025 conference in Hong Kong, standing beside a projected slide and speaking into a microphone.
October 31, 2025 at 6:27 PM
deap3600.bsky.social
Proud to share that a story on #darkmatter and the DEAP-3600 experiment has just been published in Belliner magazine 📰✨ A great opportunity to bring cutting-edge astrophysics closer to the public!
Practise your Italian😉👉 shorturl.at/mGcDh
#outreach
Page of Belliner magazine featuring the article “Andare sottoterra per studiare il cielo” (“Going underground to study the sky”). The main image shows the spherical DEAP-3600 dark matter detector with multiple round photodetectors arranged in a geometric pattern.
October 20, 2025 at 9:04 AM
Reposted by DEAP-3600
snolabscience.bsky.social
SNOLAB is hosting its third annual poster design contest to celebrate Dark Matter Day! Participants of any age are invited to design an original piece of visual artwork that explores the theme of dark matter. Learn more here: www.snolab.ca/poster-conte....

#DarkMatterDay
October 8, 2025 at 6:35 PM
deap3600.bsky.social
👋 Welcome Ryan Curtis to the DEAP collaboration! He’s starting his MSc at Queen’s University (supervised by Michela Lai), focusing on radon adsorption in argon & SiPM detection in LAr. Ryan is also passionate about #outreach, co-running @ThePhysicsHouse on TikTok.
#DEAP3600team
A young man in a blue and black checkered shirt, wearing a conference badge, poses smiling with one hand on his hip and the other resting on a large blue cylindrical experimental apparatus inside an underground tunnel with cables and lighting overhead.
October 1, 2025 at 9:27 AM
deap3600.bsky.social
Fresh from the underground: the third argon fill at DEAP-3600 is now complete ✅. The detector is filled to full capacity and ready for the next steps!
Work continues at @snolabscience.bsky.social
#teamwork #darkmatter
A collage of photos showing scientists and engineers working at SNOLAB on the DEAP-3600 experiment. Team members in blue cleanroom suits and orange or white helmets are operating equipment, handling cryogenic systems, monitoring instruments, and connecting wires. The central images highlight the detector and filling system used for the liquid argon fill.
September 24, 2025 at 2:10 PM
deap3600.bsky.social
👋 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
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.
September 22, 2025 at 2:34 PM
Reposted by DEAP-3600
snolabscience.bsky.social
This photo, “Grace under pressure”, was taken by Mary Katherine Keown. The photographer had this to say about it: “Everything — including the coffee — is controlled at SNOLAB. The kind of precision that goes into experimentation at SNOLAB is almost super-human.”
#PhysPics25
September 9, 2025 at 1:15 PM
deap3600.bsky.social
DEAP-3600 was presented at #TAUP2025 (24-30.08, Xichang) - one of the most important events in our field🌌 New #darkmatter search results, solar neutrino measurements, and insights into supermassive gravitinos. Talks by Shawn Westerdale & Michal Olszewski.
Official TAUP 2025 conference banner: “19th International Conference on Topics in Astroparticle and Underground Physics, Xichang, Sichuan, China, 2025.8.24–8.30.” Michal Olszewski presenting at TAUP 2025, standing at a podium with a slide titled “Plan” projected behind him.
September 2, 2025 at 11:17 AM
deap3600.bsky.social
On Aug 1, Michela Lai, Analysis Coordinator of our experiment, began her role as Assistant Professor at Queen’s University, Kingston! She’ll keep working on DEAP-3600, DarkSide-20k & ARGO.
From Cagliari to California to Canada - best of luck, Michela!
@queensuglobal.bsky.social
A woman in a black blazer is standing at a podium with a microphone, giving a presentation. She is holding a small remote in her hand and looking attentively to the side.
August 26, 2025 at 4:32 PM
Reposted by DEAP-3600
snolabscience.bsky.social
If the Big Bang created an equal amount of matter and antimatter, why is antimatter vanishingly scarce in the universe today? SNOLAB is studying neutrino properties to answer this pivotal question. knowablemagazine.org/content/arti...
How a mysterious particle could explain the universe’s missing antimatter
The Big Bang should have produced equal amounts of matter and antimatter, which would have annihilated each other in a spectacular burst of pure energy. But it didn’t. New experiments focused on under...
knowablemagazine.org
August 19, 2025 at 4:19 PM
deap3600.bsky.social
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
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.
August 14, 2025 at 2:53 PM
deap3600.bsky.social
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
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.
August 10, 2025 at 3:15 PM
Reposted by DEAP-3600
snolabscience.bsky.social
The Canadian Astroparticle Summer Student Talk (CASST) Symposium is taking place on August 12th and August 13th. The deadline to submit an abstract has been extended until Friday, August 9th. For more information and to register, visit here: indico.snolab.ca/event/32/ove....
August 5, 2025 at 6:00 PM
deap3600.bsky.social
🤩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
Canadian Science Publishing
cdnsciencepub.com
August 1, 2025 at 1:34 PM
deap3600.bsky.social
🎤 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 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.
July 30, 2025 at 10:58 AM
deap3600.bsky.social
Our paper recently submitted to #JINST has been published! It explores methods for finding exact locations of particle interactions in liquid argon, reducing backgrounds, and improving the search for #darkmatter.
iopscience.iop.org/article/10.1...
@snolabscience.bsky.social
Promotional banner for the DEAP-3600 experiment featuring a spherical detector array and the text: “Position Reconstruction in the DEAP-3600 Dark Matter Search Experiment | arXiv | JINST.” Includes a contact email: deap3600-outreach@snolab.ca.
July 28, 2025 at 10:29 AM
deap3600.bsky.social
Cheyanne Monk presents a background reduction in the DEAP-3600 detector at Women+ in Physics Canada!
We’re now over halfway filled, and the data looks excellent - great news for future experiments like DarkSide-20k & ARGO.
#WomenInPhysics #darkmatter
A person standing next to a scientific poster titled “Background Reduction in the DEAP-3600 Dark Matter Detector.” The poster includes diagrams, graphs, and descriptions of experimental methods. The person is holding a coffee cup and smiling at the camera.
July 24, 2025 at 4:02 PM
deap3600.bsky.social
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.
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.
July 17, 2025 at 3:54 PM
deap3600.bsky.social
Fresh from the underground: the third argon fill at DEAP-3600 is going smoothly📈. We're approaching half capacity!
Work is ongoing at @snolabscience.bsky.social.
📸 by Sean Daugherty
#darkmatter #cooldown
Scientist in blue coveralls and a hard hat crouches next to a Cryomech cryogenic system at the DEAP-3600 detector site, surrounded by technical equipment and control panels, during the third liquid argon fill.
July 14, 2025 at 7:47 AM
Reposted by DEAP-3600
gizmodo.com
Record-Setting Dark Matter Detector Comes Up Empty—and That's Good News https://gizmodo.com/record-setting-dark-matter-detector-comes-up-empty-and-thats-good-news-2000625783
Record-Setting Dark Matter Detector Comes Up Empty—and That's Good News
LUX-ZEPLIN’s latest result sets the most stringent limit on WIMPs' interaction strength to date.
gizmodo.com
July 9, 2025 at 1:48 AM
deap3600.bsky.social
Congrats to Dr. Sarthak Choudhary (#DEAP3600) on defending his PhD at NCAC PAS! His thesis focused on optimising light collection in liquid argon detectors and modelling pulse shape discrimination for #darkmatter searches.
@polskaakademianauk.bsky.social
#NCN #Astrocent
A congratulatory graphic featuring a portrait of a young man in glasses and a green plaid shirt on the left, with the text “PhD Thesis Successfully Defended!” on a blue background to the right. Logos for DEAP-3600, Astrocent, and the Nicolaus Copernicus Astronomical Center are included.
June 30, 2025 at 2:54 PM
Reposted by DEAP-3600
mcdonaldinstitute.bsky.social
Our monthly astroparticle physics community newsletter goes out this week! If you're part of the research community or just interested in what we do, be sure to subscribe!
mcdonaldinstitute.ca/newsletter/
June 17, 2025 at 3:07 PM