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The space radiation induced displacement damage effects on the performance of the Silicon Drift Detector (SDD) based X-ray spectrometer has been studied using X-ray (Fe-55) and gamma ray (Co-60) radiations. The spectroscopic performance of the SDD based spectrometer degrades due to radiation damage during the transit and in-orbit operations. Silicon detectors are sensitive to displacement damage which...
Thanks to single photon detection capability and excellent intrinsic timing resolution, silicon photomultipliers represent an interesting solution in an increasing range of applications which require accurate evaluation of the arrival time of single photons. In this contribution, different front-end electronics solutions for this kind of detectors are compared, to find out more about the achievable...
The European XFEL is an extremely brilliant Free Electron Laser Source with a very demanding pulse structure: trains of 2700 X-Ray pulses are repeated at 10 Hz. The pulses inside the train are spaced by 220 ns and each one contains up to 1012 photons of 12.4 keV, while being ≤ 100 fs in length. AGIPD (Adaptive Gain Integrating Pixel Detector) is a hybrid 1M-pixel detector developed by DESY, PSI, and...
Pixelated scintillator crystals are commonly used in gamma radiation detectors for PET scanners. The size of these pixels, the crystal surface treatment and the thickness of the reflector inserted between crystals directly affects energy and spatial resolution as well as the sensitivity of the detector, and increase the signal to noise ratio by channeling the visible light produced by the gamma photon...
Data Multiplexing has always been an attractive method for reducing the cost and complexity of the systems. In SiPM-based scanners with large increase in the number of channels multiplexing techniques can be very desirable. This paper presents an all on-chip method for integration and hold plus multiplexing of any number of channels for position and energy generation in this type of scanners. Compared...
The Compact Muon Solenoid (CMS) detector installed at the CERN Large Hadron Collider (LHC) has an extensive muon system which provides information simultaneously for identification, track reconstruction and triggering of muons. As a consequence of the extreme particle rate and high integrated charge, the essentiality to upgrade the LHC has given rise to the High Luminosity phase of the LHC (HL-LHC)...
Fast scintillation detectors based on Lanthanum Bromide (LaBr3) crystals are nowadays used in nuclear physics experiments, mainly to measure γ-ray energy and time information. The Milano group has developed a 10 large volume (3.5″×8″) LaBr3 detector array (HECTOR+) and collaborates to a a γ-calorimeter based on tens of LaBr3-NaI phoswich detectors (PARIS). A dedicated 16 channels NIM analog module...
Many experiments are currently using or proposing to use large area GEM foils in their detectors, which is creating a need for commercially available GEM foils. Currently CERN is the only main distributor of GEM foils, however with the growing interest in GEM technology keeping up with the increasing demand for GEM foils will be difficult. Thus the commercialization of GEM foils has been established...
Resistive Plate Chamber (RPC) detectors are widely employed in the muon trigger systems of three experiments at the Large Hadron Collider (LHC) thanks to an excellent time resolution. A gas mixture composed of C2H2F4, iC4H10 and SF6 is used for LHC RPCs operation in avalanche mode. C2H2F4 and SF6 have a Global Warming Potential (GWP) of 1430 and 23900 respectively, classifying them as greenhouse gases...
Mechanical precision is a key aspect of the 2 m2 high-rate capable Micromegas detectors for the upgrade of the Small Wheels of the ATLAS muon spectrometer. The Micromegas will be built as quadruplets with cathodes and strip-anodes made of stable honeycomb sandwiches. To achieve the required single plane resolution below 100 μm the deviation from planarity of a single detector plane must not exceed...
A novel type of gaseous detector, the Pixel-TPC, has been operated for the first time at a test beam in Spring 2015. In this concept, a Time Projection Chamber is read out by pixel ASICs.
We present the first results of a tracking system prototype using the artificial retina algorithm for fast track finding. The system is based on extensive parallelization and interconnectivity, and allows real-time tracking with offline-like quality with a latency < 1 μs. The artificial retina algorithm has been implemented on a novel custom data acquisition board, based on commercial FPGAs, that...
Recently we have shown that common, commercially available plastic scintillators (PS) can be used for radon (222Rn) measurements. They absorb radon in their volume and have different pulse decay times of the signals of alpha- and beta-particles, which allows alpha-/beta-pulse-shape discrimination (PSD). With this approach and using optimal PSD settings we have obtained alpha spectra of radon and its...
Emerging UV to blue light emitting scintillation materials promise improved radiation detection capabilities such as dual neutron-gamma detection and higher energy resolution. The use of traditional photomultiplier tubes (PMTs), with their associated high-voltage electronics often represents form factor and power-limiting component. The unique capabilities of a solid-state photomultiplier (SSPM) provides...
A novel silicon photomultipliers (SiPM) has been developed with both a standard and a fast output, aiming at providing good energy and timing performance simultaneously for time of flight (TOF) PET application. Optimal readout method of this SiPM is investigated in this study. The standard output can be taken from either anode terminal or cathode terminal and different dual readout mode has different...
We proposed a new webcam-based air-dose rate monitoring system, in which multiple webcams are driven remotely by a single PC. A CMOS image sensor in a webcam can detect not only visible light but also ionizing radiation. Covering the lens with light shield, we can observe radiation events. Gamma-ray event rates are well used for conventional measurements of air-dose rates. The event rates in units...
The GlueX detector in Hall D at Jefferson Lab is instrumented with about 5000 Silicon Photomultipliers (SiPM) manufactured by Hamamatsu Corporation. Silicon photomultipliers with a sensitive area of 3×3 mm2 are used to detect light from scintillator detectors such as: the tagger microscope, pair spectrometer, and start counter. An array of 4×4 SiPM sensors was specially designed by Hamamatsu for the...
The performance of a spectrometry system (SPEC) for identification of trace activities in water is presented. The SPEC detector is a part of the TAWARA_RTM platform designed for monitoring of water processed for distribution by the Waterworks Company. The SPEC system is dedicated for identification of radioisotopes emitting γ-rays of energies between 50 keV and 2 MeV. The SPEC detector comprises a...
The aim of this paper is to study usefulness of SiPM light readout in detection of gamma rays up to 6.1MeV in combination with various scintillators. The reported measurements were made with 3 samples of one type of Hamamatsu TSV (Through Silicon Via technology) MPPC arrays. These 4×4 channel arrays have a 50×50 μm2 cell size and 12×12 mm2 effective active area. All the tests were done in a climatic...
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