Speaker: Gulden Othman (University of North Carolina) Title: CAGE Scanner: Investigating Surface Backgrounds in HPGe Detectors for Neutrinoless Double-Beta Decay Searches Abstract: A potential source of problematic backgrounds in a ton-scale 76Ge-based neutrinoless double-beta decay (0nuBB) program may arise from particle interactions occurring near the surfaces of high purity germanium (HPGe) detectors. The Collimated Alphas, Gammas, […]

  Speaker: Rebecca Carney (SLAC)   Title: Silicon tracking in the search for rare processes    Abstract: The ATLAS Detector, below the surface of the Swiss-French border, measures the remnants of high-energy proton-proton collisions, accelerated by the Large Hadron Collider (LHC) at CERN. A little over a year ago the LHC paused operations, having delivered an integrated luminosity […]

Speaker: Zara Bagdasarian (UC Berkeley) Title: Borexino. Sun. Earth. Neutrinos Abstract: Borexino experiment is a 280-ton liquid scintillator detector located at a 3800 m w.e. depth in the Laboratori Nazionali del Gran Sasso (Italy). In more than 12 years of data taking, Borexino has demonstrated how its unprecedented radio-purity led to exploring a wide range […]

Speaker: Nicholas Rodd (LBNL)   Title: Evidence the 3.5 keV line is not from dark matter decay Abstract: X-ray observations of nearby clusters and galaxies have reported an unexpected X-ray line around 3.5 keV. This line has received significant attention due to its possible explanation through decaying dark matter; in particular, decaying sterile neutrino models, […]

Speaker: Ethan Bernard (UC Berkeley) Title: The Construction of the LZ Dark Matter Detector Abstract: The assembly of the LUX-ZEPLIN (LZ) dark matter detector within the Homestake mine in Lead, South Dakota is nearing completion.  This detector features a two-phase time projection chamber containing seven tons of liquid xenon specifically instrumented to detect low-energy nuclear […]

Speaker: Rémi Adam (LLR/CNRS) Title: Diffuse gas in galaxy clusters: on the thermal and non-thermal components Abstract: The clusters of galaxies represent the last step of the formation of large scale structures in the Universe. They are both useful cosmological probes and unique astrophysical laboratories. The clusters grow by accretion of surrounding structures and from […]

Speaker: Zachary Marshall (LBNL)  Title: Unidentified New Physics: LHC Searches for SUSY and Dark Matter Abstract: ATLAS and CMS, two large, general-purpose experiments at the Large Hadron Collider at CERN, have a rich program of searches for new physics. This seminar will take a look at some of the most interesting and difficult searches for […]

Speaker: Chia-Cheng Chang (LBNL)  Title: Time evolution of open quantum many-body systems Abstract: The increasing interest and efforts put forth towards the development of quantum computing have lead to a shift in how one goes about tackling problems that are typically thought of as difficult. In this talk I will discuss a specific paradigm of […]

Speaker: Eric Charles (Stanford) Title: Indirect Dark Matter Detection: Status and Summary of WIMP Searches     Abstract:  The nature of dark matter is a longstanding enigma of physics; it may consist of particles beyond the Standard Model that are still elusive to experiments. Searches for signals from the annihilation or decay of weakly interacting massive particle (WMIP) […]

Speaker: Luca Pagani (UC Davis) Title: Recent results from the ACED and the ARTIE experiments Abstract: Liquid argon is becoming a popular medium for particle detection, with applications ranging from low-background dark matter searches to high-energy neutrino detection. Because neutrons represent both an important source of background (e.g., for dark matter experiments) and a product […]

Speaker: Micah Buuck (SLAC) Title: Neurtrinoless Double-Beta Decay and Radioactive Backgrounds in the MAJORANA DEMONSTRATOR Abstract: Neutrinoless double-beta decay (0νββ) is a lepton-number-violating process whose existence would indicate that neutrinos are Majorana fermions. The MAJORANA collaboration is searching for 0νββ in germanium-76 using a modular array of high-purity germanium detectors, housed at the Sanford Underground […]

Speaker: Jorge Morales (SLAC) Title: TBA Abstract: TBA

Speaker: Jorge Morales (SLAC) Title: Simulation of Dark Matter and Standard Model Interactions in the SuperCDMS Soudan Experiment Abstract: Astronomical observations lead us to believe that dark matter constitutes the majority of the mass of the Universe, yet it has never been directly observed experimentally. The Super Cryogenic Dark Matter Search Experiment (SuperCDMS) aims to […]

Speaker: Bradley Kavanagh (IFCA - Spain) Title: Detection Dark Matter around Black Holes with Gravitational Waves Abstract: The observation of Gravitational Waves (GWs) has opened up a whole new avenue for constraining and detecting particle Dark Matter (DM). One of the most promising systems to study is the Intermediate Mass Ratio Inspiral (IMRI): a stellar-mass […]

Speaker: Matthew Szydagis (UALbany) Title: The Road to Discovering Sub-GeV Dark Matter Using Supercooled Liquids Abstract:The latest developments in the search for low-mass dark matter with the snowball chamber technology, essentially a reverse bubble chamber using supercooled water instead of superheating, will be presented. The latest calibration data sets with neutron and gamma-ray radioactive calibration […]

Speaker: Benjamin Schmidt (LBNL) Title: A new limit from the search for 0νββ of 100Mo from the CUPID-Mo experiment Abstract: The CUPID-Mo experiment, currently taking data at the Laboratoire Souterrain de Modane (France), is a demonstrator for CUPID, the next-generation upgrade of the first ton-scale cryogenic 0νββ-search, CUORE. The experiment is searching for 0νββ decay of […]

Speaker: Michelle Galloway (University of Zurich) Title: Observation of excess electronic recoil events in XENON1T Abstract: A search for new physics with XENON1T revealed an excess of electronic recoil events in the (1 - 7) keV region, favoring signal over background with significances of 3.5 sigma for solar axions/ALPs, 3.2 sigma for an enhanced neutrino […]

Speaker: Hao Chen (Texas A&M University) Title: Two New Cryogenic Detector R&D Abstract: It is well-accepted that the majority of the matter in the universe is dark and non-baryonic. The nature of dark matter, however, remains mysterious. Various proposed candidates span a wide range in the mass and cross section parameter space. Many experimental efforts […]

Speaker: Geertje Heuermann (Karlsruhe Institute of Technology) Title: Active Shielding for Future Large-Scale Dark Matter Experiments Abstract: In this talk I will present the conceptual design of a water Cherenkov detector and a loaded liquid scintillator which effectively allow to reduce cosmogenic and radiogenic background sources in tonne scale dark matter detectors. Join Zoom Meeting https://lbnl.zoom.us/j/94627104366?pwd=K09lTTBHdk5UVEw1cm1EOEVxVU05QT09 Meeting […]