Light Detection
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Optimization of the light detection system of the ICARUS detector
new Abstract: The ICARUS detector, a key component of the Short Baseline Neutrino (SBN) Program at Fermi National Acelerator Laboratory (FNAL), is a 600-ton Liquid Argon Time Projection Chamber (LArTPC) equipped with a Light Detection System (LDS) that uses 360 Hamamatsu R5912-MOD 8-inch photomultiplier tubes (PMTs), specifically designed to operate under cryogenic conditions ($\sim 87 \ K$). These PMTs feed the trigger signal to the readout, improve the spatial and timing resolution of the...
'Flawless on the outside, flipped within': Detecting hidden defects in 2D dielectrics with light
'Flawless on the outside, flipped within': Detecting hidden defects in 2D dielectrics with light Gaby Clark Scientific Editor Alexander Pol Deputy Editor A material may appear flawless on the surface yet fail to function properly. The cause lies in structural defects hidden within two-dimensional thin films, which are considered key materials for next-generation semiconductor devices.
Towards Compact Autonomous Driving Perception with Balanced Learning and Multi-sensor Fusion
Announce Type: new Abstract: We present a novel compact deep multi-task learning model to handle various autonomous driving perception tasks in one forward pass. The model performs multiple views of semantic segmentation, depth estimation, light detection and ranging (LiDAR) segmentation, and bird's eye view projection simultaneously without being supported by other models. We also provide an adaptive loss weighting algorithm to tackle the imbalanced learning issue that occurred due to...
Embedded underwater front-end electronics for the 3-inch photomultipliers in the JUNO experiment
arXiv:2604.25835v2 Announce Type: replace Abstract: The Jiangmen Underground Neutrino Observatory (JUNO) is a 20-kton liquid scintillator-based, low-radioactivity, multi-purpose neutrino detector located 693 meters (1800 m.w.e.) underground in the Guangdong province, China. To detect scintillation light produced in the target, the detector is equipped with 17,612 20-inch photomultipliers (PMTs), forming the Large PMT system (LPMT).
Performance characterisation of the Hamamatsu R760 photomultiplier tube for the PLUME detector
arXiv:2604.21687v3 Announce Type: replace Abstract: The Probe for Luminosity Measurement detector is a novel luminometer designed to monitor the luminosity and beam conditions of the Large Hadron Collider at the interaction point of the LHCb experiment, starting from Run 3. The detector is based on a hodoscope composed of 48 Hamamatsu R760 photomultiplier tubes, which detect the Cherenkov light produced by charged particles originating from the interaction region. The accurate and stable...
Illumination-Invariant Anomaly Detection for Sub-Canopy UAV Multispectral Point Clouds
Announce Type: new Abstract: Unmanned Aerial Vehicle (UAV) multispectral point clouds (MPC) provide high-dimensional spatial-spectral data for sub-canopy target detection; however, their efficacy is significantly compromised by severe illumination heterogeneity caused by vegetation shadows. To address this, we propose a prior-free anomaly detection framework capable of robustly handling lighting variations. First, we formulate solar angle estimation as an inverse optimization problem.
AmbientEye: A Dataset for Pupil Segmentation under Natural Ambient Infrared Illumination
Announce Type: new Abstract: Eye tracking is essential for smart glasses, as it provides insight into user attention for ambient intelligence applications. However, most existing eye-tracking systems rely on active infrared (IR) illumination, creating practical barriers to all-day outdoor use due to power consumption. In this paper, we investigate whether passive IR cameras alone, without any active IR light source, can enable reliable pupil detection in unconstrained outdoor environments,...
A quantum metasurface breakthrough could finally close the terahertz gap
A quantum metasurface breakthrough could finally close the terahertz gap A quantum-powered metasurface breakthrough could finally make terahertz technology far more practical, sensitive, and widely usable. - Date: - May 31, 2026 - Source: - SPIE--International Society for Optics and Photonics - Summary: - Researchers have developed a compact quantum detector that makes terahertz radiation much easier to detect. A specially designed metasurface funnels incoming energy into tiny active...
Proteins can be selectively controlled with radio waves
Proteins can be selectively controlled with radio waves Lisa Lock Scientific Editor Robert Egan Associate Editor In a significant advance in biological quantum sensing, a research team led by the Technical University of Munich (TUM) has discovered and tested a new mechanism of action in which proteins can be controlled with radio waves. In doing so, they influence a sensitive quantum state known as spin and make it visible via light. In the future, such findings could help detect and even...
Mysterious signals keep coming from space: Astronomers find their 'Rosetta stone'
Mysterious signals keep coming from space: Astronomers find their 'Rosetta stone' Sadie Harley Scientific Editor Andrew Zinin Lead Editor A pair of stars spiraling around each other. That's the origin of a new source of repeating radio bursts we've detected, called ASKAP J1745. In recent years, astronomers have been puzzling over mysterious bursts of radio signals, known as long-period transients because of how slowly they repeat.