ICALEPCS2017 - List of Keywords (simulation)

Paper	Title	Other Keywords	Page
MODPL02	Virtual Control Commissioning for a Large Critical Ventilation System: The CMS Cavern Use Case	ion, controls, PLC, operation	92
	W. Booth, E. Blanco Viñuela, B. Bradu, S. Sourisseau CERN, Geneva, Switzerland
	The current cavern ventilation control system of the CMS experiment at CERN is based on components which are already obsolete: the SCADA system, or close to the end of life: the PLCs. The control system is going to be upgraded during the CERN Long Shutdown 2 (2019-2020) and will be based on the CERN industrial control standard: UNICOS employing WinCC OA as SCADA and Schneider PLCs. Due to the critical nature of the CMS ventilation installation and the short allowed downtime, the approach was to design an environment based on the virtual commissioning of the new control. This solution uses a first principles model of the ventilation system to simulate the real process. The model was developed with the modelling and simulation software EcosimPro. In addition, the current control application of the cavern ventilation will also be re-engineered as it is not completely satisfactory in some transients where many sequences are performed manually and some pressure fluctuations observed could potentially cause issues to the CMS detector. The plant model will also be used to validate new regulation schemes and transient sequences offline in order to ensure a smooth operation in production.
	Talk as video stream: https://youtu.be/NVzClA1dSxc
	Slides MODPL02 [3.318 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MODPL02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUDPL01	Reproduce Anything, Anywhere: A Generic Simulation Suite for Tango Control Systems	ion, TANGO, controls, software	280
	S. Rubio-Manrique, S. Blanch-Torné, M. Broseta, G. Cuní, D. Fernández-Carreiras, J. Moldes ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain A. Götz ESRF, Grenoble, France
	Synchrotron Light Sources are required to operate on 24/7 schedules, while at the same time must be continuously upgraded to cover scientists needs of improving its efficiency and performance. These operation conditions impose rigid calendars to control system engineers, reducing to few hours per month the maintenance and testing time available. The SimulatorDS project has been developed to cope with these restrictions and enable test-driven development, replicating in a virtual environment the conditions in which a piece of software has to be developed or debugged. This software provides devices and scripts to easily duplicate or prototype the structure and behavior of any Tango Control System, using the Fandango python library* to export the control system status and create simulated devices dynamically. This paper will also present first large scale tests using multiple SimulatorDS instances running on a commercial cloud. * S.Rubio et al., "Dynamic Attributes and other functional flexibilities of PyTango", ICALEPCS'09, Kobe, Japan (2009)
	Talk as video stream: https://youtu.be/YyLu76YV3iQ
	Slides TUDPL01 [2.732 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUDPL01
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TUDPL03	Control System Simulation Using DSEE High Level Instrument Interface and Behavioural Description	ion, TANGO, interface, controls	292
	A.J.T. Ramaila, K. Madisa, N. Marais SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa A.S. Banerjee, P. Patwari, S. Roy Chaudhuri Tata Research Development and Design Centre, Pune, India Y. Gupta National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India
	Funding: National Research Foundation of South Africa. National Centre for Radio Astronomy of India. Development of KATCP based control systems for the KAT-7 and MeerKAT radio telescopes proved the value of a fully simulated telescope system. Control interface simulators of all telescope subsystems were developed or sourced from the subsystems. SKA SA created libraries to ease creation of simulated KATCP devices. The planned SKA radio telescope chose the TANGO controls framework. To benefit from simulation-driven development tango-simlib, an OSS Python library for data-driven development of TANGO device simulators, is presented. Interface simulation with randomly varying attributes only requires a POGO XMI file; more complex behaviour requires a simple JSON SIMDD (Simulator Description Datafile). Arbitrary behaviour is implemented selectively using Python code. A simulation-control interface for back-channel manipulation of the simulator for e.g. failure conditions is also generated. For the SKA Telescope Manager system an Eclipse DSEE (Domain Specific Engineering Environment) capturing the behaviour and interfaces of all Telescope subsystems is being developed. The DSEE produces tango-simlib SIMDD files, ensuring that the generated simulators match their formal specification.
	Talk as video stream: https://youtu.be/Ufpe_xsR8pY
	Slides TUDPL03 [2.877 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUDPL03
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPHA042	ADAPOS: An Architecture for Publishing ALICE DCS Conditions Data	ion, software, Linux, controls	482
	J.L. LÃ¥ng, A. Augustinus, P.M. Bond, P.Ch. Chochula, A.N. Kurepin, M. Lechman, O. Pinazza CERN, Geneva, Switzerland A.N. Kurepin RAS/INR, Moscow, Russia M. Lechman IP SAS, Bratislava, Slovak Republic O. Pinazza INFN-Bologna, Bologna, Italy
	ALICE Data Point Service (ADAPOS) is a software architecture being developed for the Run 3 period of LHC, as a part of the effort to transmit conditions data from ALICE Detector Control System (DCS) to GRID, for distributed processing. ADAPOS uses Distributed Information Management (DIM), 0MQ, and ALICE Data Point Processing Framework (ADAPRO). DIM and 0MQ are multi-purpose application-level network protocols. DIM and ADAPRO are being developed and maintained at CERN. ADAPRO is a multi-threaded application framework, supporting remote control, and also real-time features, such as thread affinities, records aligned with cache line boundaries, and memory locking. ADAPOS and ADAPRO are written in C++14 using OSS tools, Pthreads, and Linux API. The key processes of ADAPOS, Engine and Terminal, run on separate machines, facing different networks. Devices connected to DCS publish their state as DIM services. Engine gets updates to the services, and converts them into a binary stream. Terminal receives it over 0MQ, and maintains an image of the DCS state. It sends copies of the image, at regular intervals, over another 0MQ connection, to a readout process of ALICE Data Acquisition.
	Poster TUPHA042 [0.686 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA042
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TUPHA072	Real-Time Liquid Scintillator Calibration Based on Intensity Modulated LED	ion, neutron, FPGA, 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 TUPHA072 [7.081 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA072
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WEAPL03	Simulation of Cryogenic Process and Control of EAST Based on EPICS	cryogenics, ion, controls, EPICS	1024
	L.B. Hu, X.F. Lu, Q. Yu, Q.Y. Zhang, Z.W. Zhou, M. Zhuang ASIPP, Hefei, People's Republic of China M.R. Clausen DESY, Hamburg, Germany
	Funding: SUPPORTED BY CHINESE ACADEMY OF SCIENCES VISITING PROFESSORSHIP FOR SENIOR INTERNATIONAL SCIENTISTS. GRANT No. 2017VEB0006 The cryogenic system of Experiment Advance Superconductor Tokomak (EAST) is a large capacity system at both 4.5 and 80K levels at huge superconducting magnet system together with 80k thermal shields, complex of cryogenic pumps and small cryogenic users. The cryogenic system and their control are highly complex due to the large number of correlated variables on wide operation ranges. Due to the complexity of the system, dynamic simulations represent the only way to provide adequate data during transients and to validate complete cooldown scenarios in such complex interconnected systems. This paper presents the design of EAST cryogenic process and control simulator. The cryogenic process model is developed by the EcosimPro and CRYOLIB. The control system model is developed based on EPICS. The real-time communication between cryogenic process and control system is realized by OPC protocol. This simulator can be used for different purpose such as operator training, test of the new control strategies and the optimization of cryogenic system.
	Talk as video stream: https://youtu.be/gyqj_Zvls08
	Slides WEAPL03 [2.911 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL03
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THCPL03	A Success-History Based Learning Procedure to Optimize Server Throughput in Large Distributed Control Systems	ion, controls, factory, MMI	1182
	Y. Gao, T.G. Robertazzi Stony Brook University, Stony Brook, New York, USA K.A. Brown BNL, Upton, Long Island, New York, USA J. Chen Stony Brook University, Computer Science Department, Stony Brook, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. Large distributed control systems typically can be modeled by a hierarchical structure with two physical layers: Console Level Computers (CLCs) and Front End Computers (FECs). The controls system of the Relativistic Heavy Ion Collider (RHIC) consists of more than 500 FECs, each acting as a server providing services to a potentially unlimited number of clients. This can lead to a bottleneck in the system. Heavy traffic can slow down or even crash a system, making it momentarily unresponsive. One mechanism to circumvent this is to transfer the heavy communications traffic to more robust higher performance servers, keeping the load on the FEC low. In this work, we study this client-server problem from a different perspective. We introduce a novel game theory model for the problem, and formulate it into an integer programming problem. We point out its difficulty and propose a heuristic algorithms to solve it. Simulation results show that our proposed schemes efficiently manage the client-server activities, and result in a high server throughput and a low crash probability.
	Talk as video stream: https://youtu.be/veLaGGNTs8w
	Slides THCPL03 [1.321 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THCPL03
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THMPL03	A New Simulation Architecture for Improving Software Reliability in Collider-Accelerator Control Systems	ion, controls, hardware, interface	1261
	Y. Gao, T.G. Robertazzi Stony Brook University, Stony Brook, New York, USA K.A. Brown, J. Morris, R.H. Olsen BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. The Relativistic Heavy Ion Collider (RHIC) complex of accelerators at Brookhaven National Laboratory (BNL) operates using a large distributed controls system, consisting of approximately 1.5 million control points, over 430 VME based control modules, and thousands of server processes. We have developed a new testing platform that can be used to improve code reliability and help streamline the code development process by adding more automated testing. The testing platform simulates the control system using the actual controls system code base but by redirecting the I/O to simulated interfaces. In this report, we will describe the design of the system and the current status of its development.
	Slides THMPL03 [0.666 MB]
	Poster THMPL03 [0.674 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THMPL03
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THPHA128	Applications of Kalman State Estimation in Current Monitor Diagnostic Systems	ion, target, feedback, diagnostics	1673
	J.O. Hill LANL, Los Alamos, New Mexico, USA
	Funding: Work supported by US Department of Energy under contract DE-AC52-06NA25396. Traditionally, designers of transformer-based beam current monitor diagnostic systems are constrained by fundamental trade-offs when reducing distortion in time-domain beam-pulse facsimile waveforms while also attempting to preserve information in the frequency-domain. When modelling the sensor system with a net-work of linear time-invariant passive components, and a state-based representation based on first-order differential equations, we identify two internal dynamical states isolated from each other by the parasitic resistance in the transformer windings. They are the parasitic capacitance voltage across the transformer's windings, and the transformer inductor current. These states are typically imperfectly observed due to noise, component value variance, and sensor component network topology. We will discuss how feedback-based Kalman State Estimation implemented within digital signal-processing might be employed to reduce negative impacts of noise along with component variance, and how Kalman Estimation might also optimize the conflicting goals of beam-pulse facsimile waveform fidelity together with preservation of fre-quency domain information.
	Poster THPHA128 [1.757 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA128
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THPHA167	EPICS Data Streaming and HDF File Writing for ESS Benchmarked Using the Virtual AMOR Instrument	ion, EPICS, controls, interface	1815
	D. Werder, M. Brambilla, M. Koennecke PSI, Villigen PSI, Switzerland F.A. Akeroyd, M.J. Clarke STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom M.D. Jones Tessella, Abingdon, United Kingdom A.H.C. Mukai, J.M.C. Nilsson, T.S. Richter ESS, Copenhagen, Denmark
	Funding: This work is funded by the European Union Framework Programme for Research and Innovation Horizon 2020, under grant agreement 676548. As a contribution to the European Spallation Source as part of BrightnESS, the Paul Scherrer Institut is involved in the streaming of EPICS data and the writing of NeXus compliant HDF5 files. We combine this development with the transition of the AMOR instrument at the Paul Scherrer Institut to EPICS and a streaming based data architecture. To guide our development before ESS has operational equipment, we use a detailed simulation of the instrument AMOR at SINQ to test and integrate our data streaming components. We convert EPICS data sources to Google FlatBuffers as our message format and distribute them using Apache Kafka. On the file writing side, we combine the messages from EPICS data sources as well as from neutron events to write HDF5 files at rates up to 4.8 GiB/s using Parallel HDF. This platform will also be used for testing the experiment control software on top of EPICS.
	Poster THPHA167 [0.476 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA167
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THPHA196	Automatized Optimization of Beam Lines Using Evolutionary Algorithms	ion, operation, interface, experiment	1906
	S. Appel, V. Chetvertkova, W. Geithner, F. Herfurth, U. Krause, S. Reimann, M. Sapinski, P. Schütt GSI, Darmstadt, Germany D. Österle KIT, Karlsruhe, Germany
	Due to the massive parallel operation modes at the GSI accelerators, a lot of accelerator setup and re-adjustment has to be made during a beam time. This is typically done manually and is very time-consuming. With the FAIR project the complexity of the facility increases furthermore and for efficiency reasons it is recommended to establish a high level of automation. Modern Accelerator Control Systems allow a fast access to both, accelerator settings and beam diagnostics data. This provides the opportunity together with the fast-switching magnets in GSI-beamlines to implement evolutionary algorithms for automated adjustment. A lightweight python interface to CERN Front-End Software Architecture (FESA) gave the opportunity to try this novel idea, fast and easy at the CRYRING@ESR injector. Furthermore, the python interface facilitates the work flow significantly as the evolutionary algorithms python package DEAP could be used. DEAP has been applied already in external optimization studies with particle tracking codes. The first results and gained experience of an automatized optimization at the CRYRING@ESR injector are presented here. S. Appel, O. Boine-Frankenheim, F. Petrov, Injection optimization in a heavy-ion synchrotron using genetic algorithms, Nucl. Instrum. Methods A, 852 (2017) pp. 73-79.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA196
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THPHA204	CLARA Virtual Accelerator	ion, controls, EPICS, network	1926
	R.F. Clarke, G. Cox, M.D. Hancock, P.W. Heath, B.G. Martlew, A. Oates, P.H. Owens, W. Smith, J.T.G. Wilson STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom
	STFC Daresbury Laboratory is developing CLARA (Compact Linear Accelerator for Research and Applications), a novel FEL (Free Electron Laser) test facility focussed on the generation of ultra-short photon pulses of coherent light with high levels of stability and synchronisation. The main motivation for CLARA is to test new FEL schemes that can later be implemented on existing and future short wavelength FELs. Particular focus will be on ultra-short pulse generation, pulse stability, and synchronisation with external sources. Knowledge gained from the development and operation of CLARA will inform the aims and design of a future UK-XFEL. To aid in the development of high level physics software, EPICS, a distributed controls framework, and ASTRA, a particle tracking code have been combined to simulate the facility as a virtual accelerator.
	Poster THPHA204 [1.241 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA204
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THSH103	Using Color Blindness Simulator During User Interface Development for Accelerator Control Room Applications	ion, interface, GUI, real-time	1958
	S. Aytac DESY, Hamburg, Germany
	For normally sighted developers it is hard to imagine how the user interface is going to look to a color blind person. Our purpose is to draw attention to people with color blindness and to consider their color vision. For that, this paper presents the integration of color blindness simulators into the development process of user interfaces. At the end we discuss the main contributing factors.
	Poster THSH103 [1.168 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THSH103
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Paper

Title

Other Keywords

Page

MODPL02

Virtual Control Commissioning for a Large Critical Ventilation System: The CMS Cavern Use Case

ion, controls, PLC, operation

92

W. Booth, E. Blanco Viñuela, B. Bradu, S. Sourisseau
CERN, Geneva, Switzerland

The current cavern ventilation control system of the CMS experiment at CERN is based on components which are already obsolete: the SCADA system, or close to the end of life: the PLCs. The control system is going to be upgraded during the CERN Long Shutdown 2 (2019-2020) and will be based on the CERN industrial control standard: UNICOS employing WinCC OA as SCADA and Schneider PLCs. Due to the critical nature of the CMS ventilation installation and the short allowed downtime, the approach was to design an environment based on the virtual commissioning of the new control. This solution uses a first principles model of the ventilation system to simulate the real process. The model was developed with the modelling and simulation software EcosimPro. In addition, the current control application of the cavern ventilation will also be re-engineered as it is not completely satisfactory in some transients where many sequences are performed manually and some pressure fluctuations observed could potentially cause issues to the CMS detector. The plant model will also be used to validate new regulation schemes and transient sequences offline in order to ensure a smooth operation in production.

Talk as video stream: https://youtu.be/NVzClA1dSxc

Slides MODPL02 [3.318 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MODPL02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUDPL01

Reproduce Anything, Anywhere: A Generic Simulation Suite for Tango Control Systems

ion, TANGO, controls, software

280

S. Rubio-Manrique, S. Blanch-Torné, M. Broseta, G. Cuní, D. Fernández-Carreiras, J. Moldes
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
A. Götz
ESRF, Grenoble, France

Synchrotron Light Sources are required to operate on 24/7 schedules, while at the same time must be continuously upgraded to cover scientists needs of improving its efficiency and performance. These operation conditions impose rigid calendars to control system engineers, reducing to few hours per month the maintenance and testing time available. The SimulatorDS project has been developed to cope with these restrictions and enable test-driven development, replicating in a virtual environment the conditions in which a piece of software has to be developed or debugged. This software provides devices and scripts to easily duplicate or prototype the structure and behavior of any Tango Control System, using the Fandango python library* to export the control system status and create simulated devices dynamically. This paper will also present first large scale tests using multiple SimulatorDS instances running on a commercial cloud.
* S.Rubio et al., "Dynamic Attributes and other
functional flexibilities of PyTango", ICALEPCS'09,
Kobe, Japan (2009)

Talk as video stream: https://youtu.be/YyLu76YV3iQ

Slides TUDPL01 [2.732 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUDPL01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUDPL03

Control System Simulation Using DSEE High Level Instrument Interface and Behavioural Description

ion, TANGO, interface, controls

292

A.J.T. Ramaila, K. Madisa, N. Marais
SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa
A.S. Banerjee, P. Patwari, S. Roy Chaudhuri
Tata Research Development and Design Centre, Pune, India
Y. Gupta
National Centre for Radio Astrophysics, Tata Institute of Fundamental Research, Pune, India

Funding: National Research Foundation of South Africa. National Centre for Radio Astronomy of India.
Development of KATCP based control systems for the KAT-7 and MeerKAT radio telescopes proved the value of a fully simulated telescope system. Control interface simulators of all telescope subsystems were developed or sourced from the subsystems. SKA SA created libraries to ease creation of simulated KATCP devices. The planned SKA radio telescope chose the TANGO controls framework. To benefit from simulation-driven development tango-simlib, an OSS Python library for data-driven development of TANGO device simulators, is presented. Interface simulation with randomly varying attributes only requires a POGO XMI file; more complex behaviour requires a simple JSON SIMDD (Simulator Description Datafile). Arbitrary behaviour is implemented selectively using Python code. A simulation-control interface for back-channel manipulation of the simulator for e.g. failure conditions is also generated. For the SKA Telescope Manager system an Eclipse DSEE (Domain Specific Engineering Environment) capturing the behaviour and interfaces of all Telescope subsystems is being developed. The DSEE produces tango-simlib SIMDD files, ensuring that the generated simulators match their formal specification.

Talk as video stream: https://youtu.be/Ufpe_xsR8pY

Slides TUDPL03 [2.877 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUDPL03

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPHA042

ADAPOS: An Architecture for Publishing ALICE DCS Conditions Data

ion, software, Linux, controls

482

J.L. LÃ¥ng, A. Augustinus, P.M. Bond, P.Ch. Chochula, A.N. Kurepin, M. Lechman, O. Pinazza
CERN, Geneva, Switzerland
A.N. Kurepin
RAS/INR, Moscow, Russia
M. Lechman
IP SAS, Bratislava, Slovak Republic
O. Pinazza
INFN-Bologna, Bologna, Italy

ALICE Data Point Service (ADAPOS) is a software architecture being developed for the Run 3 period of LHC, as a part of the effort to transmit conditions data from ALICE Detector Control System (DCS) to GRID, for distributed processing. ADAPOS uses Distributed Information Management (DIM), 0MQ, and ALICE Data Point Processing Framework (ADAPRO). DIM and 0MQ are multi-purpose application-level network protocols. DIM and ADAPRO are being developed and maintained at CERN. ADAPRO is a multi-threaded application framework, supporting remote control, and also real-time features, such as thread affinities, records aligned with cache line boundaries, and memory locking. ADAPOS and ADAPRO are written in C++14 using OSS tools, Pthreads, and Linux API. The key processes of ADAPOS, Engine and Terminal, run on separate machines, facing different networks. Devices connected to DCS publish their state as DIM services. Engine gets updates to the services, and converts them into a binary stream. Terminal receives it over 0MQ, and maintains an image of the DCS state. It sends copies of the image, at regular intervals, over another 0MQ connection, to a readout process of ALICE Data Acquisition.

Poster TUPHA042 [0.686 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA042

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPHA072

Real-Time Liquid Scintillator Calibration Based on Intensity Modulated LED

ion, neutron, FPGA, 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 TUPHA072 [7.081 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA072

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEAPL03

Simulation of Cryogenic Process and Control of EAST Based on EPICS

cryogenics, ion, controls, EPICS

1024

L.B. Hu, X.F. Lu, Q. Yu, Q.Y. Zhang, Z.W. Zhou, M. Zhuang
ASIPP, Hefei, People's Republic of China
M.R. Clausen
DESY, Hamburg, Germany

Funding: SUPPORTED BY CHINESE ACADEMY OF SCIENCES VISITING PROFESSORSHIP FOR SENIOR INTERNATIONAL SCIENTISTS. GRANT No. 2017VEB0006
The cryogenic system of Experiment Advance Superconductor Tokomak (EAST) is a large capacity system at both 4.5 and 80K levels at huge superconducting magnet system together with 80k thermal shields, complex of cryogenic pumps and small cryogenic users. The cryogenic system and their control are highly complex due to the large number of correlated variables on wide operation ranges. Due to the complexity of the system, dynamic simulations represent the only way to provide adequate data during transients and to validate complete cooldown scenarios in such complex interconnected systems. This paper presents the design of EAST cryogenic process and control simulator. The cryogenic process model is developed by the EcosimPro and CRYOLIB. The control system model is developed based on EPICS. The real-time communication between cryogenic process and control system is realized by OPC protocol. This simulator can be used for different purpose such as operator training, test of the new control strategies and the optimization of cryogenic system.

Talk as video stream: https://youtu.be/gyqj_Zvls08

Slides WEAPL03 [2.911 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL03

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THCPL03

A Success-History Based Learning Procedure to Optimize Server Throughput in Large Distributed Control Systems

ion, controls, factory, MMI

1182

Y. Gao, T.G. Robertazzi
Stony Brook University, Stony Brook, New York, USA
K.A. Brown
BNL, Upton, Long Island, New York, USA
J. Chen
Stony Brook University, Computer Science Department, Stony Brook, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
Large distributed control systems typically can be modeled by a hierarchical structure with two physical layers: Console Level Computers (CLCs) and Front End Computers (FECs). The controls system of the Relativistic Heavy Ion Collider (RHIC) consists of more than 500 FECs, each acting as a server providing services to a potentially unlimited number of clients. This can lead to a bottleneck in the system. Heavy traffic can slow down or even crash a system, making it momentarily unresponsive. One mechanism to circumvent this is to transfer the heavy communications traffic to more robust higher performance servers, keeping the load on the FEC low. In this work, we study this client-server problem from a different perspective. We introduce a novel game theory model for the problem, and formulate it into an integer programming problem. We point out its difficulty and propose a heuristic algorithms to solve it. Simulation results show that our proposed schemes efficiently manage the client-server activities, and result in a high server throughput and a low crash probability.

Talk as video stream: https://youtu.be/veLaGGNTs8w

Slides THCPL03 [1.321 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THCPL03

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THMPL03

A New Simulation Architecture for Improving Software Reliability in Collider-Accelerator Control Systems

ion, controls, hardware, interface

1261

Y. Gao, T.G. Robertazzi
Stony Brook University, Stony Brook, New York, USA
K.A. Brown, J. Morris, R.H. Olsen
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The Relativistic Heavy Ion Collider (RHIC) complex of accelerators at Brookhaven National Laboratory (BNL) operates using a large distributed controls system, consisting of approximately 1.5 million control points, over 430 VME based control modules, and thousands of server processes. We have developed a new testing platform that can be used to improve code reliability and help streamline the code development process by adding more automated testing. The testing platform simulates the control system using the actual controls system code base but by redirecting the I/O to simulated interfaces. In this report, we will describe the design of the system and the current status of its development.

Slides THMPL03 [0.666 MB]

Poster THMPL03 [0.674 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THMPL03

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THPHA128

Applications of Kalman State Estimation in Current Monitor Diagnostic Systems

ion, target, feedback, diagnostics

1673

J.O. Hill
LANL, Los Alamos, New Mexico, USA

Funding: Work supported by US Department of Energy under contract DE-AC52-06NA25396.
Traditionally, designers of transformer-based beam current monitor diagnostic systems are constrained by fundamental trade-offs when reducing distortion in time-domain beam-pulse facsimile waveforms while also attempting to preserve information in the frequency-domain. When modelling the sensor system with a net-work of linear time-invariant passive components, and a state-based representation based on first-order differential equations, we identify two internal dynamical states isolated from each other by the parasitic resistance in the transformer windings. They are the parasitic capacitance voltage across the transformer's windings, and the transformer inductor current. These states are typically imperfectly observed due to noise, component value variance, and sensor component network topology. We will discuss how feedback-based Kalman State Estimation implemented within digital signal-processing might be employed to reduce negative impacts of noise along with component variance, and how Kalman Estimation might also optimize the conflicting goals of beam-pulse facsimile waveform fidelity together with preservation of fre-quency domain information.

Poster THPHA128 [1.757 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA128

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THPHA167

EPICS Data Streaming and HDF File Writing for ESS Benchmarked Using the Virtual AMOR Instrument

ion, EPICS, controls, interface

1815

D. Werder, M. Brambilla, M. Koennecke
PSI, Villigen PSI, Switzerland
F.A. Akeroyd, M.J. Clarke
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
M.D. Jones
Tessella, Abingdon, United Kingdom
A.H.C. Mukai, J.M.C. Nilsson, T.S. Richter
ESS, Copenhagen, Denmark

Funding: This work is funded by the European Union Framework Programme for Research and Innovation Horizon 2020, under grant agreement 676548.
As a contribution to the European Spallation Source as part of BrightnESS, the Paul Scherrer Institut is involved in the streaming of EPICS data and the writing of NeXus compliant HDF5 files. We combine this development with the transition of the AMOR instrument at the Paul Scherrer Institut to EPICS and a streaming based data architecture. To guide our development before ESS has operational equipment, we use a detailed simulation of the instrument AMOR at SINQ to test and integrate our data streaming components. We convert EPICS data sources to Google FlatBuffers as our message format and distribute them using Apache Kafka. On the file writing side, we combine the messages from EPICS data sources as well as from neutron events to write HDF5 files at rates up to 4.8 GiB/s using Parallel HDF. This platform will also be used for testing the experiment control software on top of EPICS.

Poster THPHA167 [0.476 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA167

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THPHA196

Automatized Optimization of Beam Lines Using Evolutionary Algorithms

ion, operation, interface, experiment

1906

S. Appel, V. Chetvertkova, W. Geithner, F. Herfurth, U. Krause, S. Reimann, M. Sapinski, P. Schütt
GSI, Darmstadt, Germany
D. Österle
KIT, Karlsruhe, Germany

Due to the massive parallel operation modes at the GSI accelerators, a lot of accelerator setup and re-adjustment has to be made during a beam time. This is typically done manually and is very time-consuming. With the FAIR project the complexity of the facility increases furthermore and for efficiency reasons it is recommended to establish a high level of automation. Modern Accelerator Control Systems allow a fast access to both, accelerator settings and beam diagnostics data. This provides the opportunity together with the fast-switching magnets in GSI-beamlines to implement evolutionary algorithms for automated adjustment. A lightweight python interface to CERN Front-End Software Architecture (FESA) gave the opportunity to try this novel idea, fast and easy at the CRYRING@ESR injector. Furthermore, the python interface facilitates the work flow significantly as the evolutionary algorithms python package DEAP could be used. DEAP has been applied already in external optimization studies with particle tracking codes*. The first results and gained experience of an automatized optimization at the CRYRING@ESR injector are presented here.
* S. Appel, O. Boine-Frankenheim, F. Petrov, Injection optimization in a heavy-ion synchrotron using genetic algorithms, Nucl. Instrum. Methods A, 852 (2017) pp. 73-79.

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THPHA204

CLARA Virtual Accelerator

ion, controls, EPICS, network

1926

R.F. Clarke, G. Cox, M.D. Hancock, P.W. Heath, B.G. Martlew, A. Oates, P.H. Owens, W. Smith, J.T.G. Wilson
STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom

STFC Daresbury Laboratory is developing CLARA (Compact Linear Accelerator for Research and Applications), a novel FEL (Free Electron Laser) test facility focussed on the generation of ultra-short photon pulses of coherent light with high levels of stability and synchronisation. The main motivation for CLARA is to test new FEL schemes that can later be implemented on existing and future short wavelength FELs. Particular focus will be on ultra-short pulse generation, pulse stability, and synchronisation with external sources. Knowledge gained from the development and operation of CLARA will inform the aims and design of a future UK-XFEL. To aid in the development of high level physics software, EPICS, a distributed controls framework, and ASTRA, a particle tracking code have been combined to simulate the facility as a virtual accelerator.

Poster THPHA204 [1.241 MB]

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THSH103

Using Color Blindness Simulator During User Interface Development for Accelerator Control Room Applications

ion, interface, GUI, real-time

1958

S. Aytac
DESY, Hamburg, Germany

For normally sighted developers it is hard to imagine how the user interface is going to look to a color blind person. Our purpose is to draw attention to people with color blindness and to consider their color vision. For that, this paper presents the integration of color blindness simulators into the development process of user interfaces. At the end we discuss the main contributing factors.

Poster THSH103 [1.168 MB]

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