The Advanced Molybdenum-based Rare process Experiment (AMoRE) in its second phase will search for neutrinoless double-beta (0νββ) decay of 100Mo in 200 kg of molybdate crystals. To achieve the zero-background level in the energy range of the double-beta decay Q-value of 100Mo, the radioactive contamination levels in AMoRE crystals should be low. Enriched molybdenum trioxide powder, 100EnrMoO3, enriched

X-ray photon counting detectors featuring high-Z sensor materials such as CdTe, CdZnTe and GaAs have the possibility to greatly improve the field of medical imaging. In this work, we investigated the energy resolving capabilities and imaging performance of two novel proof-of-concept hybrid photon counting detectors based on the IBEX ASIC and on Chromium-compensated GaAs as direct-detection sensor material

The detection of special nuclear materials (SNM) requires the understanding of nuclear signatures that allow the discrimination against background. In particular, understanding neutron background characteristics such as count rates and energies and their correlations with environmental conditions and surroundings of measurement locations is important in enhancing SNM detection capabilities. The Mobile

The response of the recently developed Tl2LiYCl6(Ce) scintillator to neutrons was measured and the 35Cl(n,p) channel observed in the material for the first time. The scintillator was exposed to a 252Cf source mounted within a parallel-plate avalanche counter for fission-fragment coincident measurements. Proton- and t+α-like events are selected with the pulse-shape discrimination technique. Comparison

The medical imaging technique, e.g., positron emission tomography (PET), X-ray computed tomography (CT), and magnetic resonance imaging (MRI) is essential for clinical diagnosis and nuclear medicine. However, due to the hardware limitations of scanners, it is always clinically challenging to obtain high-resolution (HR) medical images. With the development of artificial intelligence, image super-resolution

This study compares detector performance through measurements of Contrast-to-Noise Ratio (CNR) of images obtained by a standard commercial X-ray mammography setup, using a flat panel detector with a 200 μm thick amorphous Selenium (a-Se) sensor, and a laboratory setup, using a Medipix3RX detector with a 1 mm thick Cadmium Telluride (CdTe) semiconductor sensor. The laboratory setup corresponds to the

Light reflectors are widely used to enhance scintillation light collection. Their enhancement level depends on the reflector’s reflectance at the scintillator’s emission wavelength. We report UV–Visible reflectance spectra, relative to BaSO4, for several common reflectors. Also reported is their radiation hardness against an ionization dose up to 100 Mrad. The results of this investigation provide

Two independent beam stoppers have been developed for improving the beam separation of the gas-filled recoil ion separator GARIS-II. Performance of these supplemental beam stoppers was investigated by using the 208Pb (18O,3n) 223Th reaction. A160-fold enhancement of the signal-to-noise ratio at the GARIS-II focal plane was observed.

Fundamental preclinical research with mice to improve boron neutron capture therapy requires a prompt gamma-ray imaging detector that can chart the real-time accumulation of 10B in tumors. This study aimed to improve the spatial resolution of our previous detector, which was based on a slab-shape LaBr3(Ce) scintillator, by changing to a pixelated 8 × 8 array scintillator. The difference between the

An iterative regularization method combining the Lanczos bidiagonalization with Tikhonov regularization is proposed and applied to neutron spectrum unfolding of a newly-developed compact multi-sphere spectrometer. The unfolding is processed as a determined problem without any prior information, which is different from the traditional way. Comparison study of the two commonly-used unfolding methods

Diffraction-limited storage rings (DLSRs), with sub-100pm⋅rad electron emittances approaching the diffraction limit for hard X-rays, would provide unprecedented transverse coherence and much higher brightness than currently operational light sources to the synchrotron radiation scientific community. Instead of typical flat beam, some individual synchrotron light users prefer round beam, a beam with

The PICOSEC Micromegas detector can time the arrival of Minimum Ionizing Particles with a sub-25 ps precision. A very good timing resolution in detecting single photons is also demonstrated in laser beams. The PICOSEC timing resolution is determined mainly by the drift field. The arrival time of the signal and the timing resolution vary with the size of the pulse amplitude. Detailed simulations based

Following a review of the design options for a superconducting ion linac, we present an alternative design for the pre-stripper section of the superconducting driver linac for the rare isotope science project (RISP) of the Institute for Basic Science in Korea. The proposed alternative design takes advantage of the recent accelerator developments at Argonne, namely for the recent ATLAS intensity and

Two groups of 10ns-level superfast kickers are needed in the on-axis swap out injection scheme, adopted by the High Energy Photon Source (HEPS) to cope with the very small dynamic aperture of its baseline 7BA lattice design. In order to fit into the very tight longitudinal space in the injection/extraction region, and to relax the strength requirement of the kickers, five units of 300 mm long strip-line

The neutron flux of compact neutron sources is low, making it difficult to measure scattered neutrons with a typical small-angle neutron scattering (SANS) geometry. A SANS geometry with ring-shaped collimation (r-SANS) was thus developed to enable experiments to be conducted using low-flux neutron source facilities. In this geometry, circumferentially collimated beams hit a sample. The scattered neutron

A radiation detection system consisting of an array of three Cs2LiYCl6:Ce3+ elpasolite cells was studied for simultaneous, directional neutron and gamma-ray measurements. Utilizing a neutron source and gamma-ray sources, measurements were carried out while rotating the three-cell array 360°. The measurement data was processed using a maximum likelihood estimation technique to determine the most probable

In order to avoid the damage of the dump target of the Future Circular Collider’s proton ring, the beam will be swept over its surface using dilution kickers oscillating in the x/y planes with 90∘ phase difference, and an amplitude changing with time, thereby creating a spiral-like pattern. The natural time-dependence of the amplitude is the exponential decay of a damped oscillating circuit, which

Since 25th August 2020 the new European Synchrotron Radiation Facility Extremely Brilliant Source (ESRF EBS) storage ring (Biasci et al., 2014 and Admans et al., 2014) [1], [2] has been providing beam to users in top-up mode with front-end (FE) shutters open. The obvious need to extract X-rays from the electron vacuum chamber generates a potential in-vacuum gate available to 6GeV electrons for reaching

Peak shape analysis was performed for the energy spectra of Doppler-broadened prompt γ-rays generated by neutron capture reactions with various boride or boron samples. Significant differences were observed between nonmetallic and metallic borides. Minor differences between the peak shapes of prompt γ-rays from zirconium- and ferro-borons were evaluated by a peak fitting method. The identification

Results of geant4 Monte Carlo simulations carried out on the Budapest PGAA detector are presented in this paper. A complete set of detector response functions, i.e. the gamma spectra corresponding to incremental gamma-ray energies up to 12 MeV, were obtained by simulations and used to unfold the experimental gamma spectra of 60Co and 152Eu. The unfolding successfully removed the continuous Compton-background

Solid polarized targets are widely used in nuclear and particle physics experiments. Polarization measurements for these targets are normally performed using nuclear magnetic resonance (NMR). The Liverpool Q-meter was developed in the late 1970s and became the de facto standard for these NMR-based measurements. However, it has become increasingly difficult to obtain the required number of Q-meter channels

The Belle II experiment at the Super B factory SuperKEKB, an asymmetric e+e− collider located in Tsukuba, Japan, is tailored to perform precision B physics measurements. The centre of mass energy of the collisions is equal to the rest mass of the ϒ(4S) resonance of mϒ(4S) = 10.58 GeV. A high vertex resolution is essential for measuring the decay vertices of B mesons. Typical momenta of the decay products

A single crystal CVD diamond detector (110μm thick) with Al contacts (11.34 mm2) was characterised as an X-ray and β− particle detector using an 55Fe radioisotope X-ray source (Mn Kα=5.9 keV, Mn Kβ=6.49 keV) and a 63Ni radioisotope β− particle source (66 keV endpoint energy). The characterisation was performed across the temperature range 160 °C to -20 °C and at applied potential differences from −400

The single shot compressed ultrafast photography (CUP) camera is the fastest camera available. This technique is based on random codes to encode and reconstruct the ultrafast dynamical scene by a compressed sensing algorithm. In this paper, a new 2D ultrafast camera with high reliability was introduced and a novel reconstruction algorithm named GAP-TV was proposed. Firstly, this camera was simulated

A four-vane type Radio Frequency Quadrupole (RFQ) is very sensitive to geometrical errors since these may result into mixing of unwanted modes with the desired operating mode. This perturbs the voltage profile of the RFQ, which may deteriorate the beam dynamics, and increase the emittance growth and beam loss. In order to tune the RFQ for a desired voltage profile, a computer program based on transmission

The structured CsI scintillation screens based on oxidized silicon micropore array templates can maintain high spatial resolution in X-ray imaging while increasing their thickness. However, the detection efficiency of the screens is not only related to their thickness, but also related to the transparency of the CsI scintillation microcolumns in the screens, because it affects the output of the scintillation

Poly (methyl methacrylate) (PMMA) is widely used in scientific and industrial applications. Because of its favorable properties, it is used in various fields such as optical, medical, and nuclear applications. Effects of ionization radiations on physical properties of PMMA have greatly studied in recent years. However, to the best of our knowledge, there have been no reports on the effects of ionizing

This paper presents the results of edge-Transient Current Technique (e-TCT) measurements of a test structure of a High Voltage CMOS (HV-CMOS) pixel demonstrator, the H35DEMO. Several high resistivity (1000 Ω⋅cm) samples of the device were thinned to 100μm, processed for backside biasing, and irradiated with neutrons to fluences up to 2⋅1016neq⋅cm−2. The evolution of effective doping concentration with

This paper presents a simulation/experimental technique used in the design of optimum performance read-out electronics for a new cosmic ray telescope composed of scintillator bars. This new detector, called SciBar Cosmic Ray Telescope (SciCRT), is installed on top of Sierra Negra volcano in Mexico, operating at an atmospheric depth of 575 g cm−2. The severe atmospheric conditions and high background

The Frisch-grid CdZnTe detector is a kind of unipolar detector, which can solve the problem of low resolution of planar CdZnTe detectors caused by the poor charge transport of holes. In this paper, high-quality CdZnTe crystals grown by traveling heater method were adopted to develop Frisch-grid CdZnTe detectors. The Geant4 software was adopted to simulate the interaction process of various γ-rays in

The ability to characterize used nuclear fuel (UNF) is important for nuclear nonproliferation safeguards, criticality safety, and fuel storage. Multiple efforts have been made to estimate the burnup (BU), initial enrichment (IE), and cooling time (CT) based on multivariate models of isotopic concentrations and radiation signatures of the fuel. This work provides a comparison of multivariate modeling

In order to clarify the data on the energies and intensities of the γ rays emitted in the decays of the odd-mass Pt isotopes, which are often used as monitors in experiments to measure cross sections or excitation functions, a new spectrometric study has been undertaken of the decays of 191,193,195,197,199Pt using samples produced in the neutron irradiation of natural Pt. Energy values have been determined

The upgrade of the BESSY II light source in Berlin towards a variable pulse-length storage-ring will lead to a complex bunch-filling pattern. This may involve co-existing electron bunches with significant variations of their properties. Among many other conditions, it calls for bunch-resolved diagnostics with sub-ps time resolution and micrometer spatial resolution. Currently, we are finishing the

The neutron yield for beryllium, vanadium and tantalum irradiated with 22, 27, 33 and 42 MeV protons is indirectly determined by Prompt Gamma Neutron Activation Analysis (PGNAA). The neutron-to-gamma conversion rate is measured with an AmBe calibration neutron source. Corrections by escaped neutrons are applied via MCNP simulations of the experiment using the ENDF/B-VII.1 database. The experimental

This paper describes the implementation of a multi-hit, multi-channel, multi-mode time-to-digital converter ASIC implemented in 0.35μm commercial CMOS technology. The ASIC is designed to meet the India-based Neutrino Observatory (INO) experimental requirements. The ASIC has eight channels, each channel capable of handling four hits: a pair of rising and falling edges. The core TDC channels are designed

Silicon photomultipliers (SiPMs) are considered among the most promising sensors for positron emission tomography (PET) applications. To fully utilize the fast response of SiPMs, a 1-to-1 coupling configuration for scintillators and sensors is applied in SiPM-based detectors, leading to a vast number of channels to process. Previously, we have proposed a multi-voltage threshold (MVT) sampling method

Arms-control agreements between the United States and Russia negotiated after the end of the Cold War have imposed limits on the number of deployed strategic nuclear weapons. Verification of these agreements has relied on onsite inspections, sometimes supported by radiation detection techniques to confirm the absence of a nuclear warhead when ambiguities arise. So far, these measurements have sought

We present a study of magnetic fields effects on the position resolution and energy response of hyper-pure germanium detectors. Our results provide realistic estimates of the potential impact on the resolving power of tracking-arrays from (fringe) magnetic fields present when operating together with large spectrometers. By solving the equations of motion for the electron and holes in the presence of

Machine learning models are proposed to successfully detect heating from pressure measurements in synchrotron colliders. These models allow to analyze all the pressure measurements in the time available between two consecutive machine runs. The limits of simple heuristic-based algorithms arsing from noise and non-reproducibility are overcome by the proposed machine learning models. These models were

This work evaluates the viability of polyimide and parylene-C for passivation of lithium-drifted silicon (Si(Li)) detectors. The passivated Si(Li) detectors will form the particle tracker and X-ray detector of the General Antiparticle Spectrometer (GAPS) experiment, a balloon-borne experiment optimized to detect cosmic antideuterons produced in dark matter annihilations or decays. Successful passivation

In synchrotrons at the European Organization for Nuclear Research (CERN), magnetic measurement systems known as B-trains measure the magnetic field in the main bending magnets in real-time, and transmit this signal for the control of the synchrotron’s RF accelerating cavities, magnet power converter and beam monitoring systems. This work presents an assessment of the capabilities and performance of

To devise an activation technique for characterizing mixed radiation fields, secondary particles from a copper target irradiated by 24 GeV/c protons were measured at the CERN High-energy AcceleRator Mixed field facility (CHARM). Activation detector sets consisting of aluminum, niobium, indium, and bismuth, were placed at 30 cm from the target at angles of 15° to 160° with respect to the beam axis.

The Hefei Advanced Light Facility (HALF) is a vacuum ultraviolet (VUV) and X-ray diffraction-limited storage ring light source. Because of its extremely small dynamic aperture, an injection scheme with a nonlinear kicker (NLK) was considered for the HALF. This magnet was designed with ferrite cores to achieve a higher excitation efficiency and a small gap shield in the central area for a flat magnetic

Application of a clover Ge detector to the measurement of the linear polarization of β-delayed γ rays was investigated. The spectrometer consists of the clover and coaxial-type Ge detectors, and will be installed at an on-line isotope separator to measure short-lived nuclei. To evaluate the performance of the spectrometer, the polarization sensitivities were determined using standard radioactive sources

In this paper, a programmable current source based simple, compact and low cost MOSFET dosimetry system is developed and characterized for the measurement of cumulative gamma radiation doses. The proposed readout system is microcontroller based which can be used to set-up different zero temperature coefficient currents (IZTC) (range: 200μA – 400μA) using digital rheostat and subsequently measuring

To investigate the possibility to characterize radioactive wastes using available information and measurements in a coherent frame, a Bayesian formalism is built to couple gamma-ray spectrometry and tomographic scans. The gamma ray spectrometry is performed with four High Purity Germanium (HPGe) detectors placed around the waste and scanning 2 cm thick slices of a radioactive waste drum in a Gamma

This paper presents the non-destructive assay of two AmLi sources used for detector characterization and active interrogation at PNNL, identified as MRC-101 and MRC-103. First, a detailed description of the internal configuration of 2724-BT encapsulated MRC sources is established. X-ray radiographs of the AmLi sources are reported for the first time to verify the dimensions and orientation of the encapsulation

Silicon photomultipliers (SiPMs) have become a standard photodetector to be coupled with scintillators in PET, but the SiPM saturation is limiting the performance achievable with the detectors employed, in particular the high energy resolution which is necessary for whole gamma imaging (WGI). The concept of WGI combines PET and a Compton camera by inserting a scatterer detector ring into a PET ring

The SnowWhite7 numerical model was developed to predict pulse height distribution from multicrystalline ZnS(Ag) scintillators exposed to alpha particles. The model, implemented in LabView, treats the following effects: charged particle energy loss, stopping-power-dependent light yield, and light self absorption in the multicrystalline matrix. SnowWhite7 was validated against experimental data obtained

In this paper, a conceptual design of a hard X-ray Free-Electron Laser (FEL) facility based on CLIC-like X-band accelerating structure has been presented. The injector, based on an X-band rf gun, the main accelerating sections, using high-gradient CLIC-like structures including rf power distribution, and the two bunch compressors have been discussed. Simulations of the rf gun, of the injector, and

A new Machine Learning algorithm for shower-head identification in the NeuLAND neutron detector is presented. The new algorithm uses densely-connected Deep Neural Networks (DNNs) to properly classify events and clusters, which allows accurate reconstruction of the 4-momenta of the detected neutrons. As data-events recorded with NeuLAND vary quite a lot in size, and not all emitted neutrons always produce

The aim of this work is to examine, from a theoretical point of view, the full-energy peak determination by starting from total efficiency and peak-to-total calculations, which are widely used in gamma-ray spectrometry. The detectors here examined include five different sodium iodide NaI(Tl) detectors and three high purity germanium HPGe detectors. The full-energy peak efficiency was determined both

In gamma-ray spectroscopy, a pulse pile-up occurs when a gamma-ray hits the detector within a time period shorter than the duration of the pulse induced by a preceding gamma-ray. The resulting pulse is the sum of two overlapping pulses. At a high counting rate, the pulse pile-up can lead to significant loss of data and/or deterioration of the measured gamma-ray energy spectrum. If the temporal separation

Needle optimization is widely used in visible and infrared region, but it is rarely utilized in X-ray and extreme ultraviolet waveband. We use Needle optimization to design Pt/C X-ray supermirrors, and the grazing incidence angles are 1.0, 1.4, and 1.7 degree, respectively. A modified target is introduced into optilayer software. A good result is obtained by Optilayer software combined with IMD software

Diffraction-limited storage ring (DLSR) light sources are being developed towards the goal of reaching the diffraction-limited emittances. To reduce the emittances, multi-bend achromat (MBA) lattices with many bend unit cells are used in DLSR designs. The bend unit cell with the combination of longitudinal gradient bend (LGB) and reverse bend (RB) can achieve much lower emittance, which has produced

The MALTA monolithic silicon pixel sensors have been used to study dicing and thinning of monolithic silicon pixel detectors for large area and low mass modules. Dicing as close as possible to the active circuitry will allow to build modules with very narrow inactive regions between the sensors. Inactive edge regions of less than 5μ m to the electronic circuitry could be achieved for 100μm thick sensors

CsI(Tl) scintillation detectors based on a silicon photomultiplier (SiPM) were tested for low-energy proton detection. Pulse shape analysis of the SiPM signals with a transimpedance amplifier was conducted to investigate the saturation effect due to the recovery time of a pixel and to evaluate particle identification capability. To recover energy linearity, a saturation correction method based on a

The drift behavior of charge carriers, generated by α-particles of a reference 241Am-source, in electronic grade, single crystal chemical vapor deposition (scCVD) diamond was investigated by the transient current technique (TCT) from room temperature up to ≈473K. Furthermore, the α-spectroscopic behavior was analyzed in terms of charge collection and spectroscopic resolution for the same temperature

The energy spectra as well as the angular distribution of photo-neutrons, called the double differential cross sections (DDXs) of the (γ, xn) reaction were measured for 16.6 MeV linearly polarized photons on Pb, Au, Sn, Cu, Fe, and Ti targets. Polarized photons were prepared using the laser Compton scattering technique at BL01, NewSUBARU, Hyogo, Japan. The photo-neutrons were measured using liquid