Keyword: neutron
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TUBPA05 High Throughput Data Acquisition with EPICS ion, detector, EPICS, data-acquisition 213
 
  • K. Vodopivec
    ORNL, Oak Ridge, Tennessee, USA
  • B. Vacaliuc
    ORNL RAD, Oak Ridge, Tennessee, USA
 
  Funding: ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U.S. Department of Energy.
In addition to its use for control systems and slow device control, EPICS provides a strong infrastructure for developing high throughput applications for continuous data acquisition. Integrating data acquisition into an EPICS environment provides many advantages. The EPICS network protocols provide for tight control and monitoring of operation through an extensive set of tools. As part of a facility-wide initiative at the Spallation Neutron Source, EPICS-based data acquisition and detector controls software has been developed and deployed to most neutron scattering instruments. The software interfaces to the in-house built detector electronics over fast optical channels for bi-directional communication and data acquisition. The software is built around asynPortDriver and allows the passing of arbitrary data structures between plugins. The completely modular design allows the setup of versatile configurations of data pre-processing plugins depending on neutron detector type and instrument requirements. After 3 years of experience and average data rates of 1.5 TB per day, it shows exemplary results of efficiency and reliability.
 
slides icon Slides TUBPA05 [2.427 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUBPA05  
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TUPHA029 Live Visualisation of Experiment Data at ISIS and the ESS ion, EPICS, experiment, detector 431
 
  • M.J. Clarke, F.A. Akeroyd, O. Arnold, M.A. Gigg, L.A. Moore
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • N.J. Draper, M.D. Jones
    Tessella, Abingdon, United Kingdom
  • T.S. Richter
    ESS, Copenhagen, Denmark
 
  As part of the UK's in-kind contribution to the European Spallation Source, ISIS is working alongside the ESS and other partners to develop a new data streaming system for managing and distributing neutron experiment data. The new data streaming system is based on the open-source distributed streaming platform Apache Kafka. A central requirement of the system is to be able to supply live experiment data for processing and visualisation in near real-time via the Mantid data analysis framework. There already exists a basic TCP socket-based data streaming system at ISIS, but it has limitations in terms of scalability, reliability and functionality. The intention is for the new Kafka-based system to replace the existing system at ISIS. This migration will not only provide enhanced functionality for ISIS but also an opportunity for developing and testing the system prior to use at the ESS.  
poster icon Poster TUPHA029 [0.644 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA029  
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TUPHA060 Control System of the Linear Accelerator as a Part of Nuclear Facility NSC KIPT Neutron Source ion, controls, linac, electron 534
 
  • D.V. Tarasov, V.P. Lyashchenko, A.Y. Zelinsky
    NSC/KIPT, Kharkov, Ukraine
 
  NSC KIPT Neutron Source on the base of subcritical assembly involves 100 MeV/100 kW electron linear accelerator as a driver. Because the Neutron Source is nuclear facility all technological systems of the facility are under regulation of State Inspection of Nuclear Regulation of Ukraine that is working in accordance with international nuclear regulation legislation. This regulation demands certain requirement to the design and realization of the facility control system in order to provide the conditions of the facility safe operation. In the paper, the features of control system of the linear accelerators as a part of nuclear facility NSC KIPT Neutron Source are described.  
poster icon Poster TUPHA060 [1.106 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA060  
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TUPHA061 Status of the NSC KIPT Neutron Source ion, target, shielding, electron 537
 
  • O. Bezditko, I.M. Karnaukhov, A. Mytsykov, D.V. Tarasov, A.Y. Zelinsky
    NSC/KIPT, Kharkov, Ukraine
 
  In NSC KIPT, Kharkov, Ukraine the state of art nuclear facility Neutron Source on the base of subcritical assembly driven with 100 MeV/100 kW electron linear accelerator has been build. The electron beam generates neutrons during bombarding the tungsten or uranium target. The subcritical assembly of low enrichment uranium is used to multiply the initial neutrons due to fission of the uranium nuclei. The facility is the first world facility of such kind. It is supposed that maximal value of multiplying neutron factor in the source will be equal to 0.95. So, the neutron flux will be increased as much as 50 times. Because of sub-criticality the facility eliminates the possibility to produce the self-sustained chain reaction. Now the Neutron source is under commissioning. In the report the facility and its control system current status is presented.  
poster icon Poster TUPHA061 [1.112 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA061  
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TUPHA072 Real-Time Liquid Scintillator Calibration Based on Intensity Modulated LED ion, FPGA, simulation, detector 575
 
  • F. Pollastrone, M. Riva
    ENEA C.R. Frascati, Frascati (Roma), Italy
  • G.C. Cardarilli
    Università degli Studi di Roma "Tor Vergata", Roma, Italy
 
  In many nuclear applications such as nuclear/high-energy physics and nuclear fusion, sensors are widely used in order to detect high energy particles. One of the available technologies is the scintillator, which is generally coupled with a photomultiplier and pulse amplifier. The detector acquisition chain is not stationary; mainly, it changes its gain as a function of the temperature and the nuclear irradiation on the photomultiplier; therefore it needs to be periodically calibrated during its operation. A calibration method reported in the literature is based on the use of a pulsed LED that flashes on the photomultiplier by generating a train of reference pulses. A new technique may be the use of an LED with continuous sinusoidal intensity emission. This provides as an output of the detector chain a small sinusoidal signal which can be digitally processed in real time, by measuring the gain and the delay time of the detector chain. Moreover, this sinusoidal background signal can be removed in real-time, before any processing or storage of data. This paper presents the technique, reporting its simulation and the main characteristics of the developed firmware and the hardware.  
poster icon Poster TUPHA072 [7.081 MB]  
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TUPHA101 Applying the Functional System Interaction Process at ESS ion, machine-protect, interface, controls 649
 
  • S. Kövecses de Carvalho, R. Andersson, E. Bargalló, A. Nordt
    ESS, Lund, Sweden
  • R. Andersson
    University of Oslo, Oslo, Norway
  • M. Rejzek
    ZHAW, Winterthur, Switzerland
 
  The European Spallation Source ERIC is being built in Lund, Sweden to complement the existing neutron sources in Europe and worldwide. ESS will be the bright-est neutron source ever built upon completion and aims to have an availability of 95% during steady state opera-tions. The purpose of Machine Protection at ESS is to protect the equipment in order to support the high availability. Due to the distributed nature of Machine Protection numerous design teams are involved to implement Protection Functions. The Machine Protection Development at ESS follows the Functional Protection lifecycle for System-of-systems developed at the facility. This paper focuses on the application of the Functional System Inter-action Process part of the Functional Protection method. To obtain the system interaction model, behavioural requirements and to allocate Protection Functions use case workshops are held. The feasibility of different system architectures and protection function implementations are discussed and simulated by going through fore-seen operational sequences, use cases. The different architectures and use cases are documented using Enter-prise Architect.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA101  
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TUPHA129 Motion Control System for the European Spallation Source Target Wheel ion, target, controls, radiation 717
 
  • D.P. Brodrick, T. Gahl, B. Gallese, K. Jurisic, M. Larsson, U. Odén, A. Sandström, K. Sjögreen
    ESS, Lund, Sweden
 
  The European Spallation Source (ESS) linear accelerator will deliver high energy proton bunches to tungsten sectors on a rotating Target Wheel, which will produce neutrons through a nuclear process. The motion control system of the Target Wheel presents engineering challenges, such as: velocity and phase stability requirements to precisely align individual tungsten sectors with proton bunches from the accelerator; a high moment of inertia due to the composition and distribution of mass on the wheel; limitations on the physical space to integrate control components, and components for associated safety systems; and, some components being exposed to a high radiation environment. The motion control system being prototyped employs components that satisfy the constraints on the physical space and radiation environment. Precise velocity and phasing of the Target Wheel are achieved by generating a series of pulses as each tungsten sector passes a fiducial point in the rotational cycle, and implementing a motion control algorithm to correctly synchronise the Target Wheel with reference signals from the centralised ESS timing system, which also controls the timing of the accelerator.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA129  
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TUPHA177 Status of the Development of the Experiment Data Acquisition Pipeline for the European Spallation Source ion, detector, EPICS, experiment 835
 
  • A.H.C. Mukai, M.J. Christensen, J.M.C. Nilsson, T.S. Richter, M. Shetty
    ESS, Copenhagen, Denmark
  • F.A. Akeroyd, M.J. Clarke
    STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
  • M. Brambilla, M. Könnecke, D. Werder
    PSI, Villigen PSI, Switzerland
  • M.D. Jones
    Tessella, Abingdon, United Kingdom
 
  Funding: This project is partially funded by the European Union Framework Programme for Research and Innovation Horizon 2020, under grant agreement 676548.
The European Spallation Source will produce more data than existing neutron facilities, due to higher accelerator power and to the fact that all data will be collected in event mode with no hardware veto. Detector data will be acquired and aggregated with metadata coming from sources such as sample environment, choppers and motion control. To aggregate data we will use Apache Kafka with FlatBuffers serialisation. A common schema repository defines the formats to be used by the data producers and consumers. The main consumers we are prototyping are a file writer for NeXus files and live reduction and visualisation via Mantid. A Jenkins-based setup using virtual machines is being used for integration tests, and physical servers are available in an integration laboratory alongside real hardware. We present the current status of the data acquisition pipeline and results from the testing and integration work going on at the ESS Data Management and Software Centre in collaboration with in-kind and BrightnESS partners.
 
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TUPHA196 The Design for CSNS Instrument Control ion, controls, experiment, software 895
 
  • J. Zhuang
    State Key laboratory of Particle Detection and Electronics of China, Beijing, People's Republic of China
  • L. Hu, J.J. Li
    IHEP, Beijing, People's Republic of China
  • L. Liao, Y. Qiu, K. Zhou
    Dongguan Institute of Neutron Science, IHEP, CAS, Dongguan, People's Republic of China
 
  Funding: China Spallation Neutron Source and the science and technology project of Guangdong province under grand No. 2016B090918131'2017B090901007
In this paper we introduced the design and implementation of the neutron instrument experiment control system in CSNS. The task of the control system is to complete the spectrometer experiment, and meanwhile provides experimental data for physical analysis. The control system of instrument in CSNS coordinate device control, data acquisition and analysis software, electronics, detector, sample environment and many other subsystems. This paper descibres the system architecture, timing system, device control and software of instrument control in CSNS
Corresponding author: Jian ZHUANG, e-mail: zhuangj@ihep.ac.cn
 
poster icon Poster TUPHA196 [0.565 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA196  
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WEBPL01 EPICS Architecture for Neutron Instrument Control at the European Spallation Source ion, controls, EPICS, interface 1043
 
  • D.P. Brodrick, T. Brys, T. Korhonen, J.E. Sparger
    ESS, Lund, Sweden
 
  The European Spallation Source (ESS) are currently developing a suite of fifteen neutron instruments, the first eight of which will be available for routine scientific use by 2023. The instrument control system will be distributed through three layers: local controllers for individual instrument components; Experimental Physics and Industrial Control System (EPICS) software to implement higher level logic and act as a hardware abstraction layer; and an Experiment Control Program (ECP) which has an executive role, interacting with instrument components via the EPICS layer. ESS are now actively designing and prototyping the EPICS controls architecture for the neutron instruments, including systems which interface to core instrument components such as motion control systems, sample environment equipment, neutron choppers, instrument Programmable Logic Controller (PLC) systems, and the interfaces to the ECP. Prototyping activities have been executed in an integrated and coordinated manner to demonstrate the EPICS controls architecture in an environment representative of the neutron instruments to which the architecture will ultimately be applied.  
video icon Talk as video stream: https://youtu.be/eRSLBMHqQLM  
slides icon Slides WEBPL01 [6.972 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEBPL01  
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THMPA03 A Simulation System for the European Spallation Source (ESS) Distributed Data Streaming ion, experiment, controls, software 1307
 
  • C. Reis, R. Borghes, G. Kourousias, R. Pugliese
    Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
 
  European Spallation Source (ESS), the next-generation neutron source facility, is expected to produce an immense amount of data. Various working groups mostly associated with the EU project BrightnESS aim at developing solutions for its data-intensive challenges. The real-time data management and aggregation is among the top priorities. The Apache KAFKA framework will be the base for ESS real-time distributed data streaming. One of the major challenges is the simulation of data streams from experimental data generation to data analysis and storage. This presentation outlines a simulation approach based on the DonkiOrchestra data acquisition and experiment control framework, re-purposed as a data streaming simulation system compatible with the ESS-KAFKA infrastructure.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THMPA03  
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THPHA033 Development of Status Analysis System Based on ELK Stack at J-PARC MLF ion, status, experiment, operation 1423
 
  • K. Moriyama
    CROSS, Ibaraki, Japan
  • T. Nakatani
    JAEA/J-PARC, Tokai-mura, Japan
  • H.O. Ohshita, T. Tomohiro, Y. Yasu
    KEK, Tokai, Ibaraki, Japan
 
  In recent neutron scattering experiments, a large quantity and various kinds of experimental data are generated. In J-PARC MLF, it is possible to conduct many experiments under various conditions in a short time with high-intensity neutron beam and high-performance neutron instruments with a wealth of sample environmental equipment. Therefore, it is required to make an efficient and effective data analysis. Additionally, since it has been almost nine years from the beginning of operation in MLF, there are many equipment and system being up for renewal resulting in failure due to aging degradation. Since such kind of failure can lose precious beam time, failure or its sign should be early detected. MLF status analysis system based on the Elasticsearch, Logstash and Kibana (ELK) Stack, which is one of the web-based framework rapidly growing for big data analysis, ingests various data from neutron instruments in real time. It realizes to gain insight for decision-making such as data analysis and experiment as well as instrument maintenance by flexible user-based analysis and visualization. In this paper, we will report the overview and development status of our status analysis system.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA033  
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THPHA194 State Machine Design for CSNS Experiment Control System ion, experiment, controls, EPICS 1896
 
  • L. Hu, J.J. Li, L. Liao, Y. Qiu, K. Zhou
    Dongguan Institute of Neutron Science, IHEP, CAS, Dongguan, People's Republic of China
  • J. Zhuang
    IHEP, Beijing, People's Republic of China
 
  Funding: China Spallation Neutron Source and the science and technology project of Guangdong province under grand No. 2016B090918131'2017B090901007.
This paper directs attention to the state machine design of the neutron scattering experiment control system in CSNS. The task of the software system is to complete the experiment on spectrometer, the purpose of the state machine design is to work with each other among the subsystems. Spectrometer experiment in CSNS spectrometer by internal control, data acquisition and analysis software, electronics, detector, sample environment and many other subsystems combined'this paper focuses on the introduction of the design details of state machine.
Corresponding author:Jian ZHUANG, e-mail: zhuangj@ihep.ac.cn
 
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THPHA195 The CERN nTOF Facility Data Acquisition System ion, experiment, operation, controls 1900
 
  • A. Masi, A.S. Almeida Paiva, R. Cevenini, E. Chiaveri, M. Donzé, S.S. Gilardoni, A. Giraud, A. Hernandez Prieto, R. Losito, D. Macina, F. Marazita, P. Peronnard, L. Tassan-Got
    CERN, Geneva, Switzerland
 
  nTOF is a pulsed neutron facility at CERN which studies neutron interactions as function of the energy. Neutrons are produced by a pulsed proton beam from the PS directed to a lead target. In a typical experiment, a sample is placed in the neutron beam and the reaction products are recorded. The typical output signals from the nTOF detectors are characterized by a train of pulses, each one corresponding to a different neutron energy interacting with the sample. The Data Acquisition System (DAQ) has been upgraded in 2014 and is characterized by challenging requirements as more than hundreds of 12 or 14-bit channels at a sampling frequency of 1 GS/s and 1.8 GS/s acquired simultaneously every 1.2 s for up to 100 ms. The amount of data to be managed can reach a peak of several GB/s. This paper describes the hardware's solutions as well as the software's architecture developed to ensure the proper synchronization between all the DAQ machines, the data's integrity, retrieval and analysis. The software modules and tools developed for the monitoring and control of the nTOF experimental areas and the DAQ operation are also detailed.  
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