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We present an Application Specific Integrated Circuit (ASIC), which is intended for readout and analog processing of silicon photomultiplier (SiPM) arrays' signals. The number of channels of the analog front-end ASIC as well as the types of their input stages depends on the application. The current version of the chip contains three current-input channels and three voltage-input channels. Each of...
The paper describes a CMOS Integrated Circuit designed for interfacing a Silicon Photomultiplier (SiPM) in UMC 180 nm technology. It features a full signal processing architecture containing Pole-Zero Cancellation (PZC) circuit, Peak Detector and Hold circuit and Comparators which one of main purposes is the coincidence recognition. Front-end electronics consists of two separate channels one for each...
Silicon Photomultiplier (SiPM) detectors are investigated world-wide as a suitable replacement for the conventional vacuum based PhotoMultiplier Tube (PMT) and are enabling applications otherwise not possible with PMT detectors. Progress in recent years has been substantial with SiPM detectors pushing the boundaries in energy and time resolution as well as photon detection efficiency and active surface...
A Compton gamma imager has been designed for use in consequence management operations and in security investigations. The imager uses solid inorganic scintillator, known for robust performance in field survey conditions, and was constrained in overall size by the requirement that it be operable from a variety of platforms, and person transportable among them. In order to introduce minimal dead material...
This paper presents the method for the compensation of the temperature fluctuations in the measurement system based on the Silicon Photomultipliers. The system was created by the authors of the paper. Temperature has very strong influence on the gain of the detectors. Because single photons are detected and the system is very sensitive, its parameters has to be steady during the measurements. Temperature...
We present the first results of a fast neutron tracker based on a silicon voxel detector combined with a plastic scintillators. The concept of the voxel detector is based on a multilayer structure composed of stacked Timepix devices forming a 3D matrix of sensitive elements - voxels. Such voxel detector maintains compact size while having greatly improved detection efficiency and tracking capabilities...
Monte Carlo simulations were carried out in order to evaluate the performance of readout solutions for monolithic LYSO blocks, considering several 2D array configurations of discrete SiPMs. Results were compared to conventional multianode PMT readout. Our findings show that a detector module based on an array of 8×8 discrete SiPM may lead to better energy resolution and comparable spatial resolution...
An eight-channel readout ASIC has been developed for reading out signals from Silicon Photomultiplier (SiPM) for PET applications. It converts both signal charge and occurring time to digital timing pulses and only needs TDC. It has the advantages of simplified circuit design, reduced power consumption and suitable for large number of readout channels. The ASIC uses a fully current mode preamplifier...
The University of Pisa and INFN Pisa are developing a prototype of a small animal PET tomograph employing continuous LYSO crystals and silicon photomultiplier (SiPM) matrices as photodetectors. The Center for Scientific and Technological Research (FBK-irst) has developed monolithic, 64 pixel SiPM matrices for their use in the PET scanner. The IFIC-Valencia collaborates in the characterization of the...
For many years most PET scanners had used a large number of crystals with some form of light sharing technique to couple them to four photo-multipliers (PMT). While the resolution of the scanners was improved by using more smaller crystals, the PMT size had remained about the same since it is not practical to make PMTs very small. Avalanche photo-diodes (APD) and silicon photo-multipliers (SPM) are...
The Timepix is a semiconductor pixelated detector that measures charge collected in each of its 256×256 pixels (55 μm pitch). Therefore, it is capable of measuring the energy and position of incoming radiation quanta at the same time. We are developing a spectroscopy and radiography technique for fast-neutrons based on the tracking of recoiled protons. The detector combines a Timepix device with a...
The CALICE collaboration has constructed highly granular electromagnetic and hadronic calorimeter prototypes to evaluate technologies for the use in detector systems at the future International Linear Collider. These calorimeters have been tested extensively in particle beams at CERN and at Fermilab. We present analysis results for hadronic events recorded at CERN with a SiW ECAL, a scintillator tile...
This work introduces the embedment of a radiation detection unit within a metal detector. The radiation sensor, based on the Silicon Photomultiplier coupled to a scintillation crystal, was successfully incorporated into a common metal detection unit. The results for sensitivity are presented. Background threshold adjustment and various application notes are discussed.
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