Pulse Shape Discrimination (PSD) is required for many radioactive particle monitoring applications. Classical PSD methods commonly struggle at high event rates in the presence of pileup, and are therefore utilized low rates. We present a algorithm, that combines classic approaches with deep learning techniques. The algorithm provides both detection classification pulses While algorithms often limited to two piled-up pulses, our designed tested under severe pileup conditions, where three or...

We describe the process of selecting a silicon photomultiplier (SiPM) as light sensor for an ultrathin (≈2 mm) highly efficient cold neutron detector. The detector consists 6LiF:ZnS(Ag) scintillator in which wavelength shifting (WLS) fibers have been embedded. WLS conduct scintillation out from to SiPM photosensor. In addition many benefits using photomultipliers photosensors (low cost, compact size, insensitivity magnetic fields), their selection also presents challenges (thermally induced...

Directional information is crucial in various applications, such as nuclear homeland security, post-nuclear and radiological contamination mapping, space missions. The energy range of interest expected to include industrial radionuclides starting from low energies, 241Am up 60Co. However, many directional radiation detectors often relied on shielding, made lead or tungsten, introducing two main drawbacks. First, their size weight render them unusable for handheld devices, drone applications....

We present a full-size engineering model of GALI - The GAmma-ray burst Localizing Instrument, composed 362 CsI(Tl) small cubic scintillators, distributed within volume $\sim2$l, and read out by silicon photo-multipliers. can provide directional information about GRBs with high angular accuracy from angle-dependent mutual obstruction between its scintillators. Here, we demonstrate GALI's laboratory experiments an $^{241}$Am source, which achieved reconstruction $<$3$^\circ$ accuracy, in...

Obtaining directional information is required in many applications such as nuclear homeland security, contamination mapping after a incident and radiological events, or during the decontamination work. However, radiation detectors are based on shielding, made of lead tungsten collimators, introducing two main drawbacks. The first size weight, making those too heavy irrelevant for utilization handheld devices, drone mapping, space applications. second drawback limited field view (FOV), which...

Pulse shape discrimination (PSD) is at the core of radioactive particles monitoring. Conventional PSD methods are geared towards low event rates, and struggle in presence pileups resulting from high rate. In this work we develop a algorithm that combines classic approaches with deep learning techniques, highly suitable for coping dramatic challenges associated classifying pulses rates. Common algorithms rates limit their research to two piled-up pulses. Our designed tested under severe...

This work summarizes a continuous study of the Silicon Photomultiplier (SiPM) device photo-coupled to various scintillation crystals for profound investigation in radiation detection and isotope identification research field. Radiological electrical measurements which have been carried out led an obvious illation regarding optimal crystal use with SiPM. CsI(Tl) was selected as most appropriate further, more intense, tests were performed, among them temperature stability obtained energy resolution.

The detection of astrophysical Gamma-Ray Bursts (GRBs) has always been intertwined with the challenge identifying direction source. Accurate angular localization better than a degree achieved to date only heavy instruments on large satellites, and limited field view. recent discovery association GRBs neutron star mergers gives new motivation for observing entire $\gamma$-ray sky at once high sensitivity accurate directional capability. We present novel detector concept, which utilizes mutual...

Several of the commonly used industrial isotopes that are concern for use as a radiological dispersal device (RDD) can easily be shielded with metal. Therefore, an approach combines detection radiation and shielding provides advanced solution. This paper introduces embedment unit within metal detector. The sensor, based on silicon photomultiplier (SiPM) coupled to scintillation crystal, was successfully incorporated into common unit. advantages over traditional light sensors their results...

In this paper a method for improving the signal to noise ratio (SNR) is described. This based on matched filter algorithm. The prospective application described would be in Radiation Portal Monitors (RPM), where observed have fixed pattern. comparison of proposed traditional integration presented. improvement SNR shown factor 10.

We developed an analog pulse shape discrimination (PSD) topology based on the well-established charge integration (CI) method, featuring two novel functional blocks beneficial for high event rate operation. The is designed high-speed scintillators. demonstrated design potentially better suited than digital methods, when considering both processing time and power consumption aspects. was tested using experimental alpha beta pulses from a plastic scintillator with layer of ZnS(Ag) coupled to...

This article presents an improved design of a seven-scintillators directional detector array, which operates on the mutual shielding principle. The optimization process enhances array's accuracy and sensitivity, while maintaining same quantity volume scintillators. A unique method is proposed, utilizing ambiguity metric to predict anticipated angular error true Direction Arrival (DOA). analysis acts as qualitative assessment, enabling comparison precision reliability different array...

Radiation Portal Monitors (RPMs) are radiation detection devices which provide passive, non-intrusive means for fast screening of transportation vehicles, baggage and passengers the presence nuclear radiological materials. This paper presents two novel methods enhancing performances RPMs. These based on analysis special pattern readings from RPM detector. The is generated when a moving source measured while background stagnant. provides an opportunity to employ Matched Filter (MF) algorithm...

Silicon photomultiplier (SiPM) is a novel photosensor technology. This paper presents the design optimization process for implementing this technology in scintillator based radiation detectors. The device provides advantages of low current consumption, small dimensions, and high gain. These properties make SiPM great interest applications involving portable instrumentation. However, approach to establish set parameters their limits required optimize performance new detection applications....

This work describes the measurements and obtained results for various photo-coupling configurations of a CsI(Tl) scintillation crystal with SiPM impact alternating operating conditions on unstable features. An investigation dominant parameters, such as noise level, resolution, dynamic range, is discussed concluded.

This work presents specially designed radiation monitoring system for baggage screening at airports and border crossing points the presence of radioactive Special Nuclear Materials (SNM). Border equipment plays a key role in combating illicit trafficking. The conveyor monitor is to meet detection level determined by standard Radiation Portal Monitors (RPM). obtained sensitivity results an analytical analysis implemented algorithms contributing performances are presented. consists highly...

This work presents a comprehensive study of the Silicon Photomultiplier (SiPM) properties as novel alternative for radiation detector light sensor. The SiPM low current consumption, its diminutive dimensions and high gain make this technology great interest applications in portable detection instrumentation based on scintillation material. development progress investigation performance device incorporation with CsI(Tl) crystal during R&D timeline is presented. research shows improvement two...