Results 1 - 10 of 264
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[en] Here we detail the new data acquisition system (DAS) developed for the CSIRO Nuclear Microprobe primarily to handle large detector arrays and to work in tandem with the Maia detector system. Both systems use HYMOD FPGA-based processors. The current DAQ system and its microscopy suite and beam handling have been integrated with the HYMOD system(s) to facilitate easy access to the either system. Examples of the new scanning modes available with the combined system are highlighted on a complex Cambrian black shale sample from the Yangtze basin in Southern China.
[en] The plan of the data acquisition (DAQ) scheme in High Energy Physics (HEP) experiments comprises of information transfer from the front-end electronics (FEE) of the detectors placed in experimental cavern to the data storage via the FPGA based data processing units. With major upgrades of the LHC experiments at CERN, the data transmission rates in the DAQ frameworks are expected to reach about few terrabytes per second within the following couple of years. In this paper, the optimization technique is implemented on a latest 20nm Intel Arria-10 FPGA. It is tested for the link rate of three high-speed communication protocols commonly used for data transmission in the HEP experiments. The robustness of the optimization technique has been tested with most stressed and transitional data conditions. The test results and the improvements in the metrics of signal integrity for different link speeds are presented and discussed
[en] The aim of this work is to develop a system which allows visualising the operational parameters of the RA-0 nuclear reactor. These parameters are stored in a postgresSQL database by an Electronic Data Acquisition System. The development process must accomplish the following two objectives: 1) Let the researchers of the RA-0 and ARN analyze the data. 2) Allow to use the data provided by this system for teaching purposes (specifically nuclear physics). The application has been developed with flexible features in order to allow being implemented in all nuclear reactor of Argentina. To achieve this, is necessary replicate the IT RA-0 environment in the desired nuclear reactor. In the final job are specified the requirements of the RAXConsult, the development and testing procedures and the development methodology for the entire building application process. Also, are listed the improvements with the system implementation and the future of this project. (author)
[en] IT Department of Synchrotron SOLEIL is structured along of a team of software developers responsible for the development and maintenance of all software from hardware controls up to supervision applications. With a very heterogonous development environment such as, several software languages, strongly coupled components and an increasing number of releases of the entire software stacks, it has become mandatory to standardize the entire development process through a “Continuous Delivery approach”; making it easy to release and deploy on time at any time. We achieved our objectives by building up a Continuous Delivery solution around two aspects, Deployment Pipeline and DevOps. A deployment pipeline is achievable by extensively automating all stages of the delivery process (the continuous integration of software, the binaries build and the integration tests). Another key point of Continuous Delivery is also a close collaboration between software developers and system administrators, often known as the DevOps movement. This paper details the feedbacks on how we have adopted this Continuous Delivery approach, modifying our daily development team life and give an overview of the future steps. (author)
[en] Since commissioning, Diamond Light Source has used the Extensible Display Manager (EDM) to provide a GUI to its EPICS-based control system. As Linux moves away from X-Windows the future of EDM is uncertain, leading to the evaluation of Control System Studio (CS-Studio) as a replacement. Diamond has a user base accustomed to the interface provided by EDM and an infrastructure designed to launch the multiple windows associated with it. CS-Studio has been adapted to provide an interface that is similar to EDM’s while keeping the new features of CS-Studio available. This will allow as simple as possible a transition to be made to using CS-Studio as Diamond’s user interface to EPICS. It further opens up the possibility of integrating the control system user interface with those in the Eclipse based GDA and DAWN tools which are used for data acquisition and data analysis at Diamond. (author)
[en] In this study, the effect of yttrium (Y) content on the hot tearing behavior of the AZ91 + xY alloys was investigated with a constrained rod casting (CRC) apparatus which was equipped with a load sensor and a data acquisition system. The microstructure and the morphology of hot cracks on the surfaces of the alloys were observed by a scanning electron microscope (SEM). The results demonstrate that with increasing Y content, the hot tearing susceptibility of AZ91 + xY alloys is decreased, reaching a minimum value when the alloy contains 1.5 wt%Y, and is further increased with further increasing Y content. In other words, AZ91 alloy (without Y) has the highest hot tearing susceptibility, whereas AZ91 + 1.5 wt%Y has the lowest hot tearing susceptibility. The SEM results further indicate that hot tears that take place during the solidification of AZ91 + xY alloys are mainly due to the liquid film and the solidification compensation force. (paper)
[en] In this work we propose the updating of the software component of a measurement system that uses the neutron noise technique in order to estimate power of research reactors and other parameters that facilitate the calibration of power lineal channels.
[es]En el presente trabajo se propone la actualización del componente de software de un sistema de medición que utiliza la técnica de ruido neutrónico con el fin de estimar la potencia de reactores de investigación y distintos parámetros que facilitan la calibración en potencia de los canales de marcha.
[en] This paper presents the Korea Superconducting Tokamak Advanced Research (KSTAR) Real-Time Data Archiving System (RTDAS) for a real-time network. In most fusion experiments, a stable and low latency real-time network is essential for achieving real-time controllability. Inspecting and supervising the operation of a real-time network is essential for ensuring its stability. Archiving the network data makes it possible to analyze the performance and status of a network. In the KSTAR, RTDAS has been developed to monitor and archive real-time network data that is used to control the plasma and send diagnostic data to Plasma Control System (PCS) in real-time to ensure the stable operation of the real-time network. The KSTAR adopts reflective memory (RFM) as a real-time network and this paper presents the algorithm of the real-time data archiving system and the experimental results of this system. The real-time data archiving system operates in two phases. During the experiment, the archiving system stores data from these real-time networks in real-time. After the experiment is finished the system sends this archived data to the MDSplus data server; this system stores all data in accordance with the KSTAR timing system. Therefore, all data is synchronized with the KSTAR timing system. This system is configured with Experimental Physics and Industrial Control System (EPICS) and Asynchronous Driver Support (AsynDriver). This system operates in real-time, was implemented on Messaging Realtime Grid -Real time (MRG-R) kernel 3.10, and uses Multi-Core Utilities (MCoreUtil). The system was tested to validate the performance of this archiving system; the test results show this system’s real-time performance.
[en] In the field of experimental nuclear physics and high energy physics Data Acquisition Systems are used to acquire raw data at highest possible event rates. Although digital systems and VME are now prevalent, the older CAMAC systems are still in use at IUAC and other laboratories to utilize existing hardware. The IUAC experimental and accelerator facilities GPSC, LINAC, HIRA and test laboratories make use of CAMAC. In view of ageing and obsolete CAMAC controllers it has become necessary to provide new commercially available crate controllers in many setups. The software system LAMPS (BARC-TIFR), developed for CAMAC and VME is used extensively in several laboratories in India. Reported in this paper are details of setting up LAMPS data acquisition for two new crate controllers: C111C, an Ethernet CAMAC controller available from CAEN and CCUSB a USB based CAMAC Crate Controller from WIENER