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Related Articles from SNS
The First Nozzle-Mounted Compton Camera Prompt Gamma Imaging System for In Vivo Proton Therapy Dose Verification
arXiv:2606.03978v1 Announce Type: new Abstract: This study presents the first clinical integration and experimental demonstration of a nozzle-mounted Compton camera prompt gamma imaging (PGI) system for in vivo proton range verification. Four position-sensitive solid-state Compton camera modules, each containing four cadmium zinc telluride (CdZnTe) detector crystals, were integrated into a modified range shifter mounted directly on the treatment nozzle of a clinical proton therapy gantry....
First observation of the $\gamma$-ray beam production by the backward Compton scattering of reflected synchrotron radiation in the extreme ultraviolet range
Announce Type: replace Abstract: Compton scattering of photons off high-energy electrons is a fundamental quantum mechanical process widely utilized to produce a $\gamma$-ray beam for scientific research. Instead of injecting laser light into a storage ring as a conventional way, we have developed an innovative method to achieve drastically higher energies approaching the ring energy by the backward Compton scattering of extreme ultraviolet (EUV) light. In this method, $92$ $\mathrm{eV}$...
Probing Nucleon Spin Structure with a Polarized Gamma Beam from Compton Backscattering at FCC-ee
Announce Type: cross Abstract: We present a kinematic and optical design of a high-energy polarized gamma-ray facility based on Compton backscattering of lasers against the FCC-ee electron beams in its $Z$, $WW$, $ZH$ and $t\bar{t}$ modes. The conversion point is located in the FCC-ee full-energy booster, allowing parasitic CBS operation without dedicated interaction-point optics. Saturating the safe value of the kinematic parameter $\kappa = 4.35$ in each mode fixes the laser wavelength and...
Time-frequency analysis of nonlinear Compton scattering via joint probability distributions
arXiv:2606.05203v1 Announce Type: new Abstract: The interaction of charged particles with an intense laser pulse gives rise to a number of characteristic spectral features of emitted radiation, including the generation of harmonics, spectral broadening due to the phase-dependent ponderomotive red shift, and the emergence of intricate sub-harmonic structures. These effects are accumulated over the course of the interaction with the electromagnetic field and are therefore inherently nonlocal...
4 - COMPTON SEAN (0001789629) (Reporting)
Filed: 2026-06-05 AccNo: 0001193125-26-260212 Size: 8 KB
Non-Equilibrium Thermodynamics of Black-Hole Coronae: QPOs, Turbulence, and Jets
arXiv:2512.09026v2 Announce Type: replace-cross Abstract: The variability of X-rays observed from accreting black hole systems, including quasi-periodic oscillations (QPOs), suggests a complex nonlinear dynamics in the corona. Here, we propose a new theoretical framework for this variability, based on non-equilibrium thermodynamics. In this model, coronal variability arises from feedback between a macroscopic oscillation of the plasma and the rate at which it is cooled by the inverse Compton...
Intrinsic Nonlocality of Spin- and Polarization-Resolved Probabilities in Strong-Field Quantum Electrodynamics
arXiv:2603.11148v2 Announce Type: replace-cross Abstract: Spin and polarization are central to precision tests of fundamental physics and for interpreting radiation from astrophysical sources and ultraintense laser-matter experiments. Here, focusing on the fundamental process of nonlinear Compton scattering, we demonstrate that a key assumption underlying current strong-field quantum electrodynamics (SFQED) models, i.e., that emission can be treated as an instantaneous random event sampled...
Distant blazar OP 313 emits very high-energy gamma rays above 100 GeV
June 3, 2026 report Distant blazar OP 313 emits very high-energy gamma rays above 100 GeV Tomasz Nowakowski Author Stephanie Baum Scientific Editor Robert Egan Associate Editor An international team of astronomers have employed one of the Large-Sized Telescopes (LSTs) at the Cherenkov Telescope Array Observatory (CTAO) to observe a distant blazar known as OP 313. Results of the observational campaign, published May 26 on the arXiv preprint server, shed more light on the behavior and nature...
Inside Google’s AI training for teachers
MOUNTAIN VIEW, Calif. — Sitting in an atrium on Google’s campus, a group of K-12 educators imagined the worst response they could receive when they tried to persuade their colleagues to use artificial intelligence. They pictured a veteran English teacher who was still upset that cursive is no longer taught.
Former Channel 4 News presenter Jon Snow diagnosed with Alzheimer’s disease
Former Channel 4 News presenter Jon Snow diagnosed with Alzheimer’s disease Jon Snow is set to share his experience in a Channel 4 documentary - Bookmark - CommentsGo to comments Veteran broadcaster Jon Snow, a familiar face from Channel 4 News, has been diagnosed with Alzheimer’s disease, the most prevalent form of dementia, the Alzheimer’s Society has confirmed. The 78-year-old journalist is set to explore the realities of living with the condition in an upcoming documentary, Jon Snow: A...