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Claudio Savarese (University of Washington)20/10/2026, 14:00RDC 1 Noble Element DetectorsPresentation
Liquefied noble elements, such as liquid xenon and liquid argon, are widely used in low-background physics experiments. They offer self-shielding due to their high density, high scintillation yield, the ability to extract an ionization signal via electron drift, multiple background-rejection techniques including pulse-shape discrimination, and ease of continuous in-situ purification. Despite...
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Kaiyuan Shi (University of Michigan), Scott Haselschwardt20/10/2026, 14:171RDC 1 Noble Element DetectorsPresentation
HydroX is a proposed upgrade to enhance the LUX-ZEPLIN experiment's sensitivity to proton-mass-scale dark matter through the addition of a hydrogen-rich dopant in the detector's liquid xenon target. In this talk we discuss the status of current R&D efforts and preliminary data to establish the feasibility and performance of such an upgrade. We present preliminary measurements made with a...
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Chloe O'Brien (University of Texas at Austin)20/10/2026, 14:341RDC 1 Noble Element DetectorsPresentation
We present the crystal xenon time-projection chamber (CXe TPC), a novel particle detector technology, as a proposed future upgrade to current liquid xenon (LXe) TPC experiments and as a standalone next-generation detector. A sensitivity-reducing hurdle for LXe-based dark matter searches is radon decay-chain betas, which produce the dominant background. Foundational tests using a sub-kg CXe...
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Dr Jingke Xu (Lawrence Livermore National Laboratory, USA)20/10/2026, 14:51RDC 1 Noble Element DetectorsPresentation
Liquid xenon-based dark matter experiments can gain substantial sensitivities to light dark matter interactions from the Migdal effect, which predicts that a nuclear recoil (NR) can be accompanied by detectable atomic ionization or excitation signals. This talk draws on our theoretical and experimental studies of NR Migdal interactions to discuss their predicted characteristics and observable...
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Hazal Deniz Zenger (Stanford/SLAC)20/10/2026, 15:081RDC 1 Noble Element DetectorsPresentation
HydroX is a novel detector technology proposed to extend the sensitivity of liquid xenon (LXe) time projection chambers (TPCs) to sub-GeV dark matter by using hydrogen as a dopant to provide more favorable energy transfer from incident particles. Recently, there has been an expanded effort to test different light hydrocarbons as dopants with better solubility in LXe than H$_2$, and measure...
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Dr Jingke Xu (Lawrence Livermore National Laboratory, USA)20/10/2026, 15:25RDC 1 Noble Element DetectorsPresentation
Liquid argon and liquid xenon both play critical roles in high-energy physics experiments. Xenon doping can mitigate some limitations of liquid argon and improve overall detector performance. The CHILLAX program at LLNL has developed unique capabilities for heavy xenon doping in liquid argon and has systematically investigated both the challenges and benefits of this technology. In this talk,...
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Kaiyuan Shi (University of Michigan)20/10/2026, 15:421RDC 1 Noble Element DetectorsPresentation
The LUX-ZEPLIN (LZ) experiment has searched for dark matter interactions that can produce nuclear recoils up to approximately 270 keVnr, including those described by non-relativistic effective field theory and inelastic dark matter models. Modeling the detector response across this broad energy range requires calibration of both nuclear- (NR) and electronic-recoil (ER) populations beyond the...
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sergey pereverzev (LLNL)20/10/2026, 16:30RDC 1 Noble Element DetectorsPresentation
Dual-phase noble-element detectors rely on electron extraction through a liquid-gas interface whose dynamical state is not fully characterized. Accumulated charge on the liquid surface and extraction grid can couple to surface waves, electrode fields, and fluid motion, potentially producing delayed electron emission, nonuniform extraction, and transient changes in S2 amplitude and shape. These...
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Samuel Bellman (University of Washington)20/10/2026, 16:471RDC 1 Noble Element DetectorsPresentation
The upcoming LEGEND-1000 experiment will conduct a search for Neutrinoless Double Beta-Decay with 1-ton of high purity germanium detectors enriched to >90% in $^{76}$Ge. These detectors will be deployed into liquid argon for operation using a new system known as the lock. High purity argon is critical to preserve scintillation light yield and reject background events. To measure argon purity...
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Iftikhar Ahmad (University of California, Riverside)20/10/2026, 17:051RDC 1 Noble Element DetectorsPresentation
Dual-phase liquid argon TPCs can reach sub-keV thresholds by counting single ionization electrons, as DarkSide-50 showed. These thresholds are still limited by argon's 15.8 eV ionization energy and by the large share of nuclear recoil energy that is lost as heat. We present an R&D program to lower them by doping LAr with xenon and with photo-sensitive dopants, both of which have lower...
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Dr Sparshita Dey (Fermilab)20/10/2026, 17:25RDC 1 Noble Element DetectorsPresentation
Liquid argon underpins a broad program of neutrino and rare-event searches, while ongoing R&D continues to push toward lower thresholds and finer granularity. At this frontier, some of the most interesting low-energy signals may be carried by only tens of ionisation electrons. Accessing signatures such as coherent elastic neutrino-nucleus scattering therefore requires not only amplifying this...
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Ryan Zhang (University of California, Santa Barbara)20/10/2026, 17:40RDC 1 Noble Element DetectorsPresentation
The Scintillating Bubble Chamber (SBC) collaboration proposes a superheated liquid argon bubble chamber to detect sub-keV nuclear recoils (NR), enabling detection of both light dark matter scattering and coherent elastic neutrino–nucleus scattering (CE$\nu$NS). The technology is projected to be sensitive to scattering from GeV-mass WIMPs and MeV-energy neutrinos. SBC consists of two projects:...
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Dr Adam Tidball (University of California, Davis; Lawrence Livermore National Laboratory)20/10/2026, 18:00RDC 1 Noble Element DetectorsPresentation
Dual-phase xenon time projection chambers (TPCs) are optimized for keV-scale signals and lead the search for WIMP dark matter interactions. Natural xenon contains ~8.9% 136Xe, which is a neutrinoless double beta decay (0𝜈𝛽𝛽) candidate, making xenon TPCs also sensitive to this rare process. However, 0𝜈𝛽𝛽 of 136Xe would produce signals at the MeV range, and current TPC signal readout strategies...
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Kelsey Oliver-Mallory20/10/2026, 18:151RDC 1 Noble Element DetectorsPresentation
Dual-phase xenon time projection chambers (TPCs) are a leading technology for direct dark matter detection. They rely on prompt scintillation in the liquid phase and electroluminescence from electrons extracted into a gaseous amplification region to reconstruct particle interactions. Precise, unbiased measurements of these signals are essential for improving xenon response models and reducing...
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