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Neutron reflectometry is a critical tool for investigating the structure of thin films and interfaces. However, the misapplication of the Born approximation to reflection geometry leads some to assume that the minimum thickness that may be…

软凝聚态物质 · 物理学 2024-03-21 Nicolas Shiaelis , Luke A. Clifton , Andrew R. McCluskey

A large-area and light-weight Gas Electron Multiplier (GEM) detector was built at the University of Virginia as a prototype for the detector R$\&$D program of the future Electron Ion Collider. The prototype has a trapezoidal geometry…

仪器与探测器 · 物理学 2025-07-03 Kondo Gnanvo , Xinzhan Bai , Chao Gua , Nilanga Liyanage , Vladimir Nelyubin , Yuxiang Zhao

A comprehensive study of the spatial resolution and detection efficiency of sensor prototypes developed for the LHCb VELO upgrade is presented. Data samples were collected at the CERN SPS H8 beam line using a hadron mixture of protons and…

Here we report on the characterization of one of the large-volume LaBr$_{3}$:Ce detectors for the ELIGANT project at ELI-NP. The main focus of this work is the response function for high-energy $\gamma$ rays of such detectors. In…

A novel composite, scintillating material intended for neutron detection and composed of small (1.5 mm) cubes of KG2-type lithium glass embedded in a matrix of scintillating plastic has been developed in the form of a 2.2 in.-diameter, 3.1…

仪器与探测器 · 物理学 2015-05-27 G. C. Rich , K. Kazkaz , H. P. Martinez , T. Gushue

In this work, we have developed and characterized a position-sensitive CLYC detector that acts as the neutron imaging layer and $\gamma$-ray Compton scatterer of the novel dual \g-ray and neutron imaging system GN-Vision, which aims at…

A new approach to the production and detection of bound neutron clusters is presented. The technique is based on the breakup of beams of very neutron-rich nuclei and the subsequent detection of the recoiling proton in a liquid scintillator.…

核实验 · 物理学 2009-11-07 F. M. Marques , M. Labiche , N. A. Orr

We report on a versatile mini ultra-high vacuum (UHV) chamber which is designed to be used on the MAgnetic Reflectometer with high Incident Angle of the J\"ulich Centre for Neutron Science at Heinz Maier-Leibnitz Zentrum in Garching,…

仪器与探测器 · 物理学 2017-01-13 A. Syed Mohd , S. Pütter , S. Mattauch , A. Koutsioubas , H. Schneider , A. Weber , T. Brückel

To detect the tiny flux of ultra-high energy neutrinos from active galactic nuclei or from interactions of highest energy cosmic rays with the microwave background photons needs target masses of the order of several hundred cubic…

仪器与探测器 · 物理学 2014-10-22 Timo Karg , Rolf Nahnhauer

Due to the Helium-3 crisis, alternatives to the standard neutron detection techniques are becoming urgent. In addition, the instruments of the European Spallation Source (ESS) require advances in the state of the art of neutron detection.…

Selene is the attempt to implement a new scheme for high-intensity specular reflectometry. Instead of a highly collimated beam one uses a convergent beam covering a large angular range. The angular resolution is then performed by a…

仪器与探测器 · 物理学 2011-02-15 J. Stahn , U. Filges , T. Panzner

We found that temperature-dependent infrared spectroscopy measurements (i.e., reflectance or transmittance) using a Fourier-transform spectrometer can have substantial errors, especially for elevated sample temperatures and collection using…

We introduce a novel reflection-mode diffraction tomography technique that enables simultaneous recovery of forward and backward scattering information for high-resolution 3D refractive index reconstruction. Our technique works by imaging a…

光学 · 物理学 2025-02-12 Tongyu Li , Jiabei Zhu , Yi Shen , Lei Tian

One of the key requirements for neutron scattering instruments is the Signal-to-Background ratio (SBR). This is as well a design driving requirement for many instruments at the European Spallation Source (ESS), which aspires to be the…

仪器与探测器 · 物理学 2019-02-20 E. Dian , K. Kanaki , A. Khaplanov , T. Kittelmann , P. Zagyvai , R. Hall-Wilton

An optimized design of a neutron detector based on timing RPCs (Resistive Plate Chambers) with boron-10 neutron converters is presented. The detector is composed of a stack of ten double gap RPCs with aluminium cathode plates coated on both…

仪器与探测器 · 物理学 2023-05-03 L. M. S. Margato , G. Canezin , A. Morozov , A. Blanco , J. Saraiva , L. Lopes , P. Fonte

In this laboratory-based study, a plate was designed, manufactured and then characterised thermally and dimensionally using a thermal imager. This plate comprised a range of known scratch, dent, thinning and pitting artefacts as mimics of…

The aim of the Cryogenic wide-Area Light Detectors with Excellent Resolution (CALDER) project is the development of light detectors with active area of $5\times5$ cm$^2$ and noise energy resolution smaller than 20 eV RMS, implementing…

For the International Large Detector (ILD) at the planned International Linear Collider (ILC) a Time Projection Chamber (TPC) is foreseen as the main tracking detector. To achieve the required point resolution, Micro Pattern Gaseous…

仪器与探测器 · 物理学 2019-02-15 Uli Einhaus , Uwe Krämer , Paul Malek

Low temperature detectors are nowadays a technology widely used for rare events studies, such as the search for dark matter candidates and neutrino-less double beta decay. The convolution of the thermal and electrical response of these…

仪器与探测器 · 物理学 2021-04-01 Irene Nutini , Carlo Bucci , Oliviero Cremonesi

Recent progress of laser science provides laser-driven neutron source (LDNS), which has remarkable features such as the short pulse width. One of the key techniques to be developed for more efficient use of the LDNS is neutron collimation…