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In this work we extended an energy-integrated neutrino transport method to facilitate efficient, yet precise, modeling of compact astrophysical objects. We particularly focus on core-collapse supernovae. We implemented a gray…

高能天体物理现象 · 物理学 2024-07-03 Haakon Andresen , Evan P. O'Connor , Oliver Eggenberger Andersen , Sean M. Couch

This investigation presents a new experimental determination of the reflectivity of 128 nm scintillation photons off stainless steel. The experiment took place in the TallBo dewar facility at Fermilab. The data were obtained using a…

仪器与探测器 · 物理学 2020-11-03 S. L. Mufson

Indirect Time-of-Flight (iToF) cameras are a promising depth sensing technology. However, they are prone to errors caused by multi-path interference (MPI) and low signal-to-noise ratio (SNR). Traditional methods, after denoising, mitigate…

计算机视觉与模式识别 · 计算机科学 2021-12-22 Felipe Gutierrez-Barragan , Huaijin Chen , Mohit Gupta , Andreas Velten , Jinwei Gu

Polarization calibration of interferometric observations is a costly procedure and, in some cases (e.g., a limited coverage of parallactic angle for the calibrator), it may not be possible to be performed. To avoid this worst-case scenario…

天体物理仪器与方法 · 物理学 2023-04-05 E. Albentosa-Ruiz , I. Marti-Vidal

Astronomical observations place increasingly tighter and more diverse constraints on the properties of neutron stars (NS). Examples include observations of radio or gamma-ray pulsars, accreting neutron stars and x-ray bursts, magnetar giant…

广义相对论与量子宇宙学 · 物理学 2024-04-18 Wolfgang Kastaun , Frank Ohme

The HORACE suite of programs has been developed to work with large multiple-measurement data sets collected from time-of-flight neutron spectrometers equipped with arrays of position-sensitive detectors. The software allows exploratory…

数据分析、统计与概率 · 物理学 2016-08-10 R. A. Ewings , A. Buts , M. D. Le , J. van Duijn , I. Bustinduy , T. G. Perring

This work demonstrates the Python package mlreflect which implements an optimized pipeline for the automized analysis of reflectometry data using machine learning. The package combines several training and data treatment techniques…

A compact photoneutron source (PNS), based on an electron linac was designed and constructed to provide required nuclear data for the design of Thorium Molten Salt Reactor (TMSR). Many local shielding are built to reduce the background of…

Liquid xenon offers several features, which make it suitable for applications in nuclear medicine, such as high scintillation yield and fast scintillation decay time. Moreover, being a continuous medium with a uniform response, liquid xenon…

仪器与探测器 · 物理学 2021-03-02 Carmen Romo-Luque

Recent work has highlighted the potentially detectable gravitational-lensing effect of neutrino halos on cosmic-microwave-background (CMB) fluctuations with upcoming instruments like SO, CMB-S4, and CMB-HD. Accurate modeling of…

宇宙学与河外天体物理 · 物理学 2024-10-14 Keduse Worku , Nashwan Sabti , Marc Kamionkowski

A novel experimental setup to measure deviations from the $1/r^2$ distance dependence of Newtonian gravity was proposed in arXiv:1609.05654. The underlying theoretical idea was to study the orbits of a microscopically-sized planetary system…

高能物理 - 唯象学 · 物理学 2023-12-22 Jorge Baeza-Ballesteros , Andrea Donini , Gabriel Molina-Terriza , Francesc Monrabal , Ander Simón

The time-of-flight Highly Granular Neutron Detector (HGND) with a multilayer longitudinal structure of interleaved absorber and scintillator plates, high transverse granularity and a time resolution of about 150 ps is currently under…

The electromagnetic polarizabilities of the nucleon are fundamental properties that describe its response to external electric and magnetic fields. They can be extracted from Compton-scattering data --- and have been, with good accuracy, in…

The redshift drift is computed along light rays propagating through a simulated universe based on the Newtonian N-body simulation code GADGET-2 combined with a perturbed Friedmann-Lemaitre-Robertson-Walker metric in the Newtonian gauge. It…

宇宙学与河外天体物理 · 物理学 2023-04-04 S. M. Koksbang

Flying plasma mirrors induced by intense lasers has been proposed as a promising way to generate few-cycle EUV or X-ray lasers. In addition, if such a relativistic plasma mirror can accelerate, then it would serve as an analog black hole to…

等离子体物理 · 物理学 2021-10-27 Yung-Kun Liu , Pisin Chen , Yuan Fang

A neutron time projection chamber can locate the approximate direction of a neutron hot spot with high efficiency and a 4{\pi} field of view. The angular resolution can be significantly improved by adding several plastic scintillation…

仪器与探测器 · 物理学 2019-07-11 Yidong Fu , Yang Tian , Yulan Li , Yigang Yang , Yiming Cai , Jian Yang , Jin Li

We present a novel FPGA-based bismuth germanate (BGO) time-of-flight (TOF) digitizer, implemented on an FPGA (VC707 evaluation kit, Xilinx). This digitizer was designed to address the recently highlighted characteristics of BGO, which…

仪器与探测器 · 物理学 2024-10-15 Daehee Lee , Sun Il Kwon

Neutron Resonance Transmission Analysis (NRTA) is a spectroscopic technique which uses the resonant absorption of neutrons in the epithermal range to infer the isotopic composition of an object. This spectroscopic technique has relevance in…

仪器与探测器 · 物理学 2021-05-19 Ethan A. Klein , Farheen Naqvi , Jacob E. Bickus , Hin Y. Lee , Robert J. Goldston , Areg Danagoulian

This work reports a cost-effective, simple front-end readout and DAQ of a RPC-based muon scattering tomography system under construction. The Time-over-threshold property of NINO ASICs has been exploited to achieve precise tracking by…

仪器与探测器 · 物理学 2020-06-01 Sridhar Tripathy , Subhendu Das , Jaydeep Datta , Nayana Majumdar , Supratik Mukhopadhyay

We describe a method to obtain point and dispersion estimates for the energies of jets arising from b quarks produced in proton-proton collisions at an energy of $\sqrt{s} =$ 13 TeV at the CERN LHC. The algorithm is trained on a large…

数据分析、统计与概率 · 物理学 2020-11-09 CMS Collaboration