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

👋 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

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

👋 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

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

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.

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

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...

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

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

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....

🤩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

🎤 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.

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

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

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.

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

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

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

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/

DEAP-3600 Project Director Mark Boulay (@carleton.ca) received the Vogt Medal from the Canadian Association of Physicists! 🏅 Awarded annually, the medal recognises outstanding contributions to nuclear and particle physics. Fantastic achievement! #Physics #Awards

🔭 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

🔍 #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

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

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

Attention physicists! #womeninphysics

DEAP-3600 entered its cooldown phase—a gradual descent to cryogenic temperatures (-186°C) needed to operate with liquid Ar, the heart of the experiment. A weeks-long process ensures every component adjusts safely, preparing the detector to hunt for elusive #darkmatter. A new chapter in our mission❄️

SNOLAB is hiring! Are you looking to lead in the construction, assembly, maintenance, and operating of work packages? We are looking for a Planner that will help push forward groundbreaking science taking place deep underground. For more information, visit here: www.snolab.ca/wp-content/u....

Last week, our team member Emma Ellingwood successfully defended her thesis: "Detection of solar neutrino absorption and study of TPB and acrylic fluorescence in DEAP-3600." Supervised by Philippe Di Stefano. Congrats, Emma! 👏 Photo: DEAP-3600 collaboration meeting in Riverside (March 2025)

Dark matter – light vibes! ✨A fantastic gathering of researchers, including DEAP-3600 members, at the #UCLA Dark Matter 2025 symposium. Exchanging ideas, forging collaborations, and exploring the unknown. 🌌🔭 @uclaupdates.bsky.social @snolabscience.bsky.social @mcdonaldinstitute.bsky.social

🔬 #UCLA Dark Matter 2025 is underway! Scientists explore sources & detection of #darkmatter & #darkenergy. DEAP-3600 was highlighted in two presentations: 🔹S.Haskins on search status 🔹T.Hugues on hardware upgrades for WIMP sensitivity @mcdonaldinstitute.bsky.social @snolabscience.bsky.social

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.

During #APSSummit25 - the world's largest physics research conference - Dr. Hugh Lippincott (@ucsb.bsky.social) delivered an invited presentation summarizing recent efforts to detect WIMP #darkmatter. DEAP-3600 was featured to illustrate the advantages of single-phase liquid argon detectors!

📢Our new paper on position reconstruction in DEAP-3600 is now on arXiv and submitted to JINST! It explores methods for finding exact locations of particle interactions in liquid argon, reducing backgrounds, and improving the search for #darkmatter arxiv.org/abs/2503.103... @snolabscience.bsky.social

🌟 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

The 4-day #DEAP-3600 Collaboration Meeting started on March 6 at @ucriverside.bsky.social. The agenda is covering analysis, hardware upgrade, data processing, backgrounds, future detectors, and outreach. It's great to come together—in person and remotely—overcoming major time zone differences!

🚀 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

Another peek inside the detector!👀 One portion of the dust removal system designed by @ualberta.bsky.social is being lowered into the DEAP-3600 glovebox prior to installation of the dust pipe. 🔧✨

In January, we shared a major upgrade to DEAP-3600. Now—more details!😊 📷 Neck reinstallation is complete! Argon connections from purification system to the neck are in place. Glovebox is open for final connections: liquid nitrogen, neck vacuum jacket, and liquid level sensors. 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

Our new paper is out in The European Physical Journal C! It explores how alpha particles interact with liquid argon, focusing on the "quenching factor". The findings refine alpha-background modeling, boosting DEAP-3600’s sensitivity to #darkmatter. Read more: buff.ly/3EgttCD

The hunt for dark matter just got an upgrade! @deap3600 is being enhanced to boost its sensitivity, bringing us closer to solving one of the universe’s biggest mysteries. #darkmatter @snolabscience.bsky.social 📷 Captured by Roam and Ramble Photography

🎉 Happy Holidays and Best Wishes for 2025! 🌟 May this festive season bring you joy, warmth, and cherished moments with those you hold dear. Here's to a New Year filled with discoveries and inspiration! With warm regards, The DEAP-3600 Collaboration🎄

Dr. Michela Lai recently delivered a seminar at Queen's University titled "Diving into the unknown: rare event searches with argon detectors" followed by vibrant discussions on #darkmatter searches and #neutrinophysics. 🌐 More info: buff.ly/3Dlw1if

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

Are you afraid of the darkness? Step into it with @ucriverside.bsky.social! Date: 29 October 2029 Time: 6:30 P.M. PST - 8:30 P.M. PST Location: University of California, Riverside Come if you dare!

📢 Michela Lai delivering a talk on rare event searches with argon detectors, including #DEAP3600👇👇👇 Such a fantastic event in Krakow (Oct 1-4), bringing together a diverse group of specialists in #darkmatter searches and beyond. 🌌✨ @JagiellonskiUni #LRT2024