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In this paper, we optimize a faster region-based convolutional neural network (FRCNN) for 1-dimensional (1D) signal processing and electromagnetic spectrum sensing. We target a cluttered radio frequency (RF) environment, where multiple RF…

Signal Processing · Electrical Eng. & Systems 2023-02-21 Todd Morehouse , Charles Montes , Ruolin Zhou

The use of Thin-foil proton recoil (TPR) spectrometers to measure neutrons from Deuterium-Tritium (DT) fusion plasma has been studied previously and is a well established technique for neutron spectrometry. The study presented here focuses…

We present an experimental realization of a 16 element, temporal-array, photon-number-resolving (PNR) detector, which is a multiplexed single-photon detector that splits an input signal over multiple time-bins, and the time-bins are…

Quantum Physics · Physics 2020-11-25 Mattias Jönsson , Marcin Swillo , Samuel Gyger , Val Zwiller , Gunnar Björk

A new measurement of the $^{235}$U(n,f) cross section was performed at the neutron time-of-flight facility n_TOF at CERN. The experiment focused on neutron energies from 20 MeV to several hundred MeV, and was normalized to neutron…

The China Spallation Neutron Source (CSNS) operates in pulsed mode and has a high neutron flux. This provides opportunities for energy resolved neutron imaging by using the TOF (Time Of Flight) approach. An Energy resolved neutron imaging…

Time- and number-resolved photon detection is crucial for photonic quantum information processing. Existing photon-number-resolving (PNR) detectors usually have limited timing and dark-count performance or require complex fabrication and…

Instrumentation and Detectors · Physics 2020-06-23 Di Zhu , Marco Colangelo , Changchen Chen , Boris A. Korzh , Franco N. C. Wong , Matthew D. Shaw , Karl K. Berggren

Neutron capture cross-section measurements are fundamental in the study of the slow neutron capture (s-) process of nucleosynthesis and for the development of innovative nuclear technologies. One of the best suited methods to measure…

Future high-luminosity hadron collider experiments feature unprecedented levels of event pile-up and extreme radiation environments, calling for sensors capable of 4D tracking, even after significant radiation damage. To this purpose, 3D…

The potential of photon detectors to achieve precise timing information is of increasing importance in many domains, PET and CT scanners in medical imaging and particle physics detectors, amongst others. The goal to increase by an order of…

Instrumentation and Detectors · Physics 2021-01-11 S. Enoch , A. Gola , P. Lecoq , A. Rivetti

Neutron Resonance Transmission Analysis (NRTA) uses resonant absorption of neutrons to infer the absolute isotopic composition of a target object, enabling applications in a broad range of fields such as archaeology, materials analysis of…

Instrumentation and Detectors · Physics 2020-01-29 Ezra M. Engel , Ethan A. Klein , Areg Danagoulian

The Fractional Fourier Transform (FRT) corresponds to an arbitrary-angle rotation in the phase space, e.g. the time-frequency (TF) space, and generalizes the fundamentally important Fourier Transform. FRT applications range from classical…

Optics · Physics 2024-03-06 Michał Lipka , Michał Parniak

The KArlsruhe TRItium Neutrino (KATRIN) experiment aims at a measurement of the neutrino mass with a 90 % confidence limit (C.L.) sensitivity of 0.2 eV/c$^2$ by measuring the endpoint region of the tritium $\beta$ decay spectrum from a…

Instrumentation and Detectors · Physics 2013-11-21 Nicholas Steinbrink , Volker Hannen , Eric L. Martin , R. G. Hamish Robertson , Michael Zacher , Christian Weinheimer

The n_TOF facility has just undergone in 2021 a major upgrade with the installation of its third generation spallation target that has been designed to optimize the performance of the two n_TOF time-of-flight lines. This contribution…

Nuclear Experiment · Physics 2023-06-21 J. Lerendegui-Marco , A. Casanovas , V. Alcayne , the n_TOF Collaboration

We have developed an improved method of time-resolved x-ray reflectivity (XRR) using monochromatic synchrotron radiation. Our method utilizes a polycapillary x-ray optic to create a range of incident angles and an area detector to collect…

Materials Science · Physics 2019-03-27 Howie Joress , Shane Quinlan Arlington , Timothy P. Weihs , Joel D. Brock , Arthur Woll

Femtosecond electron beams with complex modulation play a crucial role in applications such as X-ray Free Electron Lasers (XFELs) and plasma wakefield accelerators. However, diagnostics for the electron beam current profile still face…

Accelerator Physics · Physics 2026-05-08 Zixiao Guo , Ke Feng , Zhiheng Lou , Guiyao Wang , Wentao Wang , Ruxin Li

Transition Radiation (TR) plays an important role in particle identification in high-energy physics and its characteristics provide a feasible method of energy calibration in the energy range up to 10 TeV, which is of interest for dark…

Instrumentation and Methods for Astrophysics · Physics 2020-04-06 Bo Huang , Hongbang Liu , Xuefeng Huang , Ming Xu , Yongwei Dong , Xiaotong Wei , Xiwen Liu , Huanbo Feng , Qinhe Yang , Jianyu Gu , Shuai Chen , Xiaochuan Xie , Jin Zhang , Yongbo Huang , Enwei Liang

Time reversal invariance violating (TRIV) effects for low energy elastic neutron deuteron scattering are calculated for meson exchange and EFT-type of TRIV potentials in a Distorted Wave Born Approximation, using realistic hadronic strong…

Nuclear Theory · Physics 2011-07-04 Young-Ho Song , Rimantas Lazauskas , Vladimir Gudkov

Based on elastic collisions, the linear momentum of a fast neutron can be measured from as few as two consecutive recoil ion tracks plus the vertex position of the third collision, or `two and half' ion tracks. If the time delay between the…

Instrumentation and Detectors · Physics 2023-08-22 Zhehui Wang , Christopher L. Morris

In the last few years many detector technologies for thermal neutron detection have been developed in order to face the shortage of 3He, which is now much less available and more expensive. Moreover the 3He-based detectors can not fulfil…

Instrumentation and Detectors · Physics 2018-04-12 G. Mauri , F. Messi , K. Kanaki , R. Hall-Wilton , E. Karnickis , A. Khaplanov , F. Piscitelli

We have developed a prototype time-resolved neutron imaging detector employing a micro-pattern gaseous detector known as the micro-pixel chamber ({\mu}PIC) coupled with a field-programmable-gate-array-based data acquisition system. Our…