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Silicon PMTs revolutionized the High Energy Physics instrumentation, first for the Calorimeters. Exploiting the Silicon PM technology and beyond, their pixel structure and avalanche regime, leads to novel tracking techniques, either applied to large area tracking systems or digital 3D avalanche pixel devices.
There are several evidence of magnetic field alterations that have been registered instants before seismic activity, in different parts of the world. Under the hypothesis that there is a relation between both phenomena, a multiple disciplinary project is being developed for verifying this statement. In this paper, a prototype for a data acquisition system is presented for obtaining valuable information...
The designing of instruments aimed to measure electromagnetic interference (EMI) is particularly challenging. The most critical aspect is the high dynamic range, which is required to avoid overload conditions and thus to guarantee reliable measurements. Unfortunately, also adhering to today's standards (i.e., CISPR 16-1-1) is not sufficient to avert overload phenomena. With three simple experiments,...
In this paper we propose an approach of image restoration from multispectral data provided by an imaging system. We specifically address two topics: (i) Development of a multi-wavelength direct model for non-stationary instrument response that includes a spatial convolution and a spectral integration, (ii) Implementation of multispectral image restoration using a regularized least-square, based on...
This paper describe the implementation of a lock-in amplifier (LIA) which conforms to the AXI standard for on-chip communication. The design and implementation is based on the Zynq field programmable gate array (FPGA) present in the open-source instrument RedPitaya. The designed architecture is a mixed solution between VHDL hardware modules and software modules, running within an ARM CPU. General...
The SCA instrument is a C-band wind scatterometer that forms part of the EUMETSAT Polar System Second Generation (EPS-SG) mission. The paper presents an overview on the current development status of the SCA instrument and of its key equipment.
The Visible-Infrared Imaging Radiometer Suite (VIIRS) onboard the Suomi National Polar-orbiting Partnership (S-NPP) spacecraft as a primary sensor was launched October 28, 2011. There are 22 VIIRS bands: 7 thermal emissive bands (TEBs), 14 reflective solar bands (RSBs) and a Day Night Band (DNB). An on-orbit On-Board Calibrator BlackBody (OBCBB) is used as the TEB calibration source that tracks the...
The Visible Infrared Imaging Radiometer Suite (VIIRS) Day-Night Band (DNB) onboard the Suomi-National Polar Orbiting Partnership (S-NPP) satellite measures broadband visible radiances providing imagery of clouds and other Earth features over illumination levels spanning 7 orders of magnitude, ranging from quarter moon to full sunlight (3e-5 to 200 W/m2/sr). Due to its original purpose to provide imagery...
Radio-Frequency Interference (RFI) is a growing problem for applications based on the Global Navigation Satellite Systems (GNSS), including Earth observation using GNSS — Reflectometry (GNSS-R). Nowadays, many efforts are being concentrated to develop RFI signal detectors with high sensitivity, which can help to control the proliferation of RFI generators or jammers. This work aims at designing and...
In this paper design, implementation, laboratory and microgravity tests of a space tether length and length rate measurer are discussed. The instrument presented was part of an experimental setup consisting in a new concept of space tether deployer with retrieval capability, which was designed and built in the framework of the Drop Your Thesis! 2016 educational programme, held by the European Space...
We present a compact instrument for time-resolved diffuse optical spectroscopy based on two pulsed diode lasers, a Silicon PhotoMultiplier working in single-photon regime and a custom-made Time-to-Digital Converter. The temporal width of the Instrument Response Function is narrower than 300 ps (Full-Width at Half Maximum) and the time measurement unit exhibits 10 ps temporal resolution with a Full...
This paper reviews the last two decades design, fabrication and characterization advances on high performance MEMS-based gas chromatography systems, the related architectures and their constitutive building blocks, which include preconcentrators, microvalves and related sample injection devices, micro-columns, and detectors. Micro-GCs hold potential for rapid analysis of volatile organic compounds...
The compositions and characteristics of the atmospheric trace gas are analyzed. It presents the detection mode and its merit or demerit of trace gas. It introduces the design principles, work modes, spectral band setting and main specifications of foreign advance atmospheric trace gas detecting instruments. It also specified that the development status of domestic instruments evolves from technology...
Programs written in unsafe languages like C and C++ often suffer from errors like buffer overflows, dangling pointers, and memory leaks. Dynamic analysis tools like Valgrind can detect these errors, but their overhead — primarily due to the cost of instrumenting every memory read and write — makes them too heavyweight for use in deployed applications and makes testing with them painfully slow. The...
Training requirements for the radiological/nuclear detection mission are described. (The PDF of this standard is available at no cost compliments of the Department of Homeland Security Domestic Nuclear Detection Office. http://standards.ieee.org/getN42/download/N42.37-2016.pdf)
In previous projects funded by the DOE, Proportional Technologies, Inc. developed the basic design of a neutron imaging detector, based on the boron-coated straw technology, aimed to replace 3He tubes in large-scale neutron science instruments. Recent efforts have focused on automated production methods, including a critical 10B4C high volume sputter coating system, and automated in-line straw tube...
Accurate estimation of distortion-free spectrum is important but difficult in various applications including spectral CT systems. To reconstruct the incident spectrum, there are two key problems to solve. One is the acquisition of detector response function. Different from many existing methods that either require detailed Mont-Carlo modeling of the detector system, or require monochromatic light...
Until recently a photomultiplier tube (PMT) was the only viable option for photon detection on μSR instruments [1]. A PMT is well suited to this application, as it offers fast rise time, small dead-time (∼15ns) and an excellent spectral match to the scintillator emission. They are also low-noise devices and are relatively inexpensive. However, the PMT has certain limitations, such as a strong sensitivity...
SIRIUS is a state-of-the-art detector system for nuclear decay spectroscopy that will be mounted at the focal plane of S3 (Super Separator Spectrometer), which is part of the new SPIRAL2 facility at GANIL, Caen in France. Such a system requires high performance as it is dedicated to the study of very exotic nuclei. It is the result of collaboration between GANIL CSNSM, IRFU, and IPHC It is composed...
Correct nuclide identification is critical for first responders. It is the final result of the complex chain occurring in a detector: a spectrum with poor statistics in a variable environment is recorded then analyzed. Industries are facing a complex challenge, as they have to design instruments that can identify materials that for the most part are difficult to obtain. Modelling a source is a viable...
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