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[en] The Compressed Baryonic Matter experiment (CBM) will be based at the new Facility for Antiproton and Ion Research (FAIR), which will deliver heavy-ion beams up to energies of 14 A GeV. In nucleus-nucleus collisions at these beam energies strongly interacting matter with densities up to 10 times normal nuclear matter is expected to be produced. The key objective of CBM is to investigate the QCD phase diagram in the region of high baryon-densities. CBM is designed to cope with very high interaction rates up to 10 MHz. This will allow to perform high precision measurements of extremely rare probes which have not been accessible by previous nucleus-nucleus experiments in this energy regime. To achieve the high rate capability CBM will be equipped with fast and radiation hard detectors employing free-streaming readout electronics. A prototype high-speed Data Acquisition (DAQ) system was used for some of CBM subsystems in 2016 and 2017, based on a combination of microTCA (uTCA) and PCIe FPGA boards. A full prototype of the DAQ system using in addition the CERN radiation hard ASIC GBTX will be used for the phase 1 of the mCBM rate at SIS18 (''mini-CBM'') setup in 2018. For mCBM phase 2 in 2019, it will be upgraded to a close to final demonstrator system with a single PCIe board replacing the uTCA and PCIe ones. We report on the progress in the preparation of these DAQ setups.
[en] The advent of digitizer based pulse processing and data acquisition (DAQ) systems has ushered an era of improved experimental setups in the domain of nuclear spectroscopy. These facilities are characterized by increased event rates from state-of-the-art large detector arrays used in the contemporary spectroscopic endeavours and the digital hardware used therewith, with its superior throughput, befits the purpose. Such vantage is owing to the development of fast recursive algorithms that are applied on the digitized detector output pulse for extracting the information of interest, therefrom. The acquired data is typically constituted with the energy and the timing of the detection, apart from the identity of the respective detector element. These parameters are used to construct the level structure of nuclei being investigated following a meticulous processing of the acquired data and its detailed analysis. The maiden instance of using digital signal processing for large detector arrays in the country was realized at the previous (2009-13) campaign of the Indian National Gamma Array (INGA) hosted in TIFR, Mumbai. Subsequent to this first stride there have been efforts to further implement the digital hardware and pulse processing algorithms in the gamma-ray spectroscopy measurements with multi-detector arrays such as INGA. The current presentation aims in elaborating on one such development carried out by the UGC-DAE CSR, Kolkata Centre and being used in the present campaign of the INGA facility at VECC, Kolkata
[en] In order to extend the physics reach of ALICE and other experiments, the LHC is planning for an upgrade of beam energies and beam luminosities during Long Shutdown-2 (LS-2) in the year of 2019 and 2020. The increase in luminosities and hence the interaction rates helps to collect high statistics of data and sustain the advance research in state-of-the-art High Energy Physics (HEP) experiments
[en] The advent of digitizer based pulse processing and data acquisition systems has ushered an era of improved experimental setups, that are compact, fast and capable of handling higher event rates, in the domain of nuclear spectroscopy. One of the recent use of such a system has been accomplished in a campaign of the Indian National Gamma Array (INGA) hosted at the Room Temperature Cyclotron (RTC) of the Variable Energy Cyclotron Centre (VECC), Kolkata. A digitizer based pulse processing and data acquisition system with firmware logic conceptualized by the Kolkata Centre of UGC-DAE CSR and implemented by XIA LLC (USA) in hardware, principally consisting of 12-bit 250 MHz digitizers, was used throughout the campaign. The system has been demonstrated to befit spectroscopic applications, working under both (detector) multiplicity based trigger requirement as well as under condition effecting to a triggerless mode. Around 15 experiments, addressing diverse nuclear structure physics across different mass regions, were carried out using the alpha and the proton beams available from the RTC. The acquired data were processed using a set of codes developed by the UGC-DAE CSR and being analysed by the respective Groups. Efforts are in progress to augment the system with additional features and commence on the next phase of the campaign
[en] In this paper, the method of temperature acquisition by STM32 is described. The hardware circuit is designed. In order to make the measurement value accurate and reliable, the software is programmed,the temperature sample for 100 times. Remove the maximum number of twenty, the same as the minimum, with the remaining 60 data to sum, and calculate the average value as the final acquisition value. This mean filtering algorithm can effectively remove interference. The test results show that the design can accurately collect the temperature value, and has a certain practical value. (paper)
[en] The Large Hadron Collider (LHC) has envisaged a series of upgrades towards a High Luminosity LHC (HL-LHC) delivering five times the LHC nominal instantaneous luminosity. The ATLAS Phase II upgrade, in 2024, will accommodate the upgrade of the detector and data acquisition system for the HL-LHC. The Tile Calorimeter (TileCal) will undergo a major replacement of its on- and off-detector electronics. In the new architecture, all signals will be digitized and then transferred directly to the off-detector electronics, where the signals will be reconstructed, stored, and sent to the first level of trigger at the rate of 40 MHz. This will provide better precision of the calorimeter signals used by the trigger system and will allow the development of more complex trigger algorithms. Changes to the electronics will also contribute to the reliability and redundancy of the system. Three different front-end options are presently being investigated for the upgrade, two of them based on ASICs, and a final solution will be chosen after extensive laboratory and test beam studies that are in progress. A hybrid demonstrator module is being developed using the new electronics while conserving compatibility with the current system. The status of the developments will be presented, including results from the several tests with particle beams. (author)
[en] In previous studies, precise n/γ discrimination algorithm for such detector was developed and it had a better discrimination performance compared to existing pulse height analysis method (PHA method) at various gamma-ray background. However, it has a limitation in terms of separation after signal storage and real-time system is required to be applied to the survey meter. In this study, real-time signal processing system applying the algorithm was manufactured and the performance was evaluated. As a result of performance evaluation in terms of gamma ray elimination and neutron counts, it was found that it has better performance compared to existing PHA method and expansion to the real-time system is possible. It is expected that it will be possible to carry out precise n/γ discrimination by applying the system developed in
[en] In the process of designing and manufacturing an electronic system the digital oscilloscope plays an essential role but it also represents one of the most expensive equipment present on the typical workbench. In order to make electronic design more accessible to students and hobbyists, an affordable data acquisition system was imagined. The paper extensively presents the development and testing of a low cost, medium speed, data acquisition system which can be used in a wide range of electronic measurement and debugging applications, assuring also great portability due to the small physical dimensions. Each hardware functional block and is thoroughly described, highlighting the challenges that occurred as well as the solutions to overcome them. The entire system was successfully manufactured using high quality components to assure increased reliability, and high frequency PCB materials and techniques were preferred. The measured values determined based on test signals were compared to the ones obtained using a digital oscilloscope available on the market and differences less than 1% were observed. (paper)
[en] The presented work is based on the characterization of the analog block of a readout system dedicated for the detection and discrimination of neutrons. The whole system is composed of a sensor, followed by an analog processing chain (amplification + shaping) and a digital processing chain (analog to digital converter and multi-channel analyzer). In this paper, we have begun by detailing the several blocks comprising the system. Then, we have focused on the analog part and especially on the evaluation of the output of the analog processing chain. Two important parameters were characterized which are the linearity of the chain and its robustness against PVT (process, voltage and temperature) variations. The simulations performed using Cadence have proved a good linearity of the system as well as a high immunity to PVT variations. As the system will have to work in harsh environments in terms of high temperatures and radiation flux, the perspectives of this work are to design the presented processing chain with CMOS SOI (Silicon On Insulator) technology
[en] In nuclear instruments applications, particularly, these are typically used for large amounts of data acquisitions from multi-channel radiation sensors array and image processing. Recently, advanced security inspection systems capable of 3-D image recognition, and simultaneously obtaining the information of the material of shape and composition have been studied. We are currently developing a multi-radiation inspection system to obtain high resolution images and the material composition of air cargo. In this study, we developed a scalable FPGA-based data acquisition system (DAS) board equipped with 64 channels of X-ray sensors. 16 DAS boards can be connected to a control unit, therefore, total of 1,024 channels of X- A scalable DAS board for air cargo inspection systems was developed. The DAS board can be connected with up to 16 other DAS boards.