Paper | Title | Other Keywords | Page |
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MOCPL03 | PROFINET Communication Card for the CERN Cryogenics Crate Electronics Instrumentation | ion, controls, SCADA, software | 59 |
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The ITER-CERN collaboration agreement initiated the development of a PROFINET communication interface which may replace the WorldFIP interface in non-radiation areas. The main advantage of PROFINET is a simplified integration within the CERN controls infrastructure that is based on Programmable Logic Controllers (PLCs). CERN prepared the requirements and subcontracted the design of a communication card prototype to the Technical University of Bern. The designed PROFINET card prototype uses the NetX Integrated Circuit (IC) for PROFINET communication and a FPGA to collect the electrical signals from the back-panel (electrical signals interface for instrumentation conditioning cards). CERN is implementing new functionalities involving programming, automation engineering and electronics circuit design. The communication between the card and higher layers of control is based on the OPC UA protocol. The configuration files supporting new types of instrumentation cards are being developed and are compatible with the SIEMENS SIMATIC automation environment. It is worth to mention that all required data calculations and protocol handling are performed using a single netX50 chip. | |||
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Talk as video stream: https://youtu.be/sbCUmUi8VVc | ||
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Slides MOCPL03 [3.277 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL03 | ||
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TUCPA04 | Model Learning Algorithms for Anomaly Detection in CERN Control Systems | ion, controls, operation, monitoring | 265 |
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At CERN there are over 600 different industrial control systems with millions of deployed sensors and actuators and their monitoring represents a challenging and complex task. This paper describes three different mathematical approaches that have been designed and developed to detect anomalies in CERN control systems. Specifically, one of these algorithms is purely based on expert knowledge while the other two mine historical data to create a simple model of the system, which is then used to detect anomalies. The methods presented can be categorized as dynamic unsupervised anomaly detection; "dynamic" since the behaviour of the system is changing in time, "unsupervised" because they predict faults without reference to prior events. Consistent deviations from the historical evolution can be seen as warning signs of a possible future anomaly that system experts or operators need to check. The paper also presents some results, obtained from the analysis of the LHC Cryogenic system. Finally the paper briefly describes the deployment of Spark and Hadoop into the CERN environment to deal with huge datasets and to spread the computational load of the analysis across multiple nodes. | |||
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Slides TUCPA04 [1.965 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUCPA04 | ||
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TUPHA006 | Automation of the Software Production Process for Multiple Cryogenic Control Applications | ion, controls, software, PLC | 375 |
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The development of process control systems for the cryogenic infrastructure at CERN is based on an automatic software generation approach. The overall complexity of the systems, their frequent evolution as well as the extensive use of databases, repositories, commercial engineering software and CERN frameworks led to further efforts towards improving the existing automation based software production methodology. A large number of control system upgrades were successfully performed for the Cryogenics in the LHC accelerator, applying the Continuous Integration practice integrating all software production tasks, tools and technologies. The production and maintenance of the control software for multiple cryogenic applications became more reliable while significantly reducing the required time and effort. This concept became a guideline for development of process control software for new cryogenic systems at CERN. This publication presents the software production methodology, as well as the summary of several years of experience with the enhanced automated control software production, already implemented for the Cryogenics of the LHC accelerator and the CERN cryogenic test facilities. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA006 | ||
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TUPHA106 | ESS Accelarator Oxygen Depletion Hazard Detection System | ion, PLC, controls, ion-source | 666 |
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At the European Spallation Source ERIC (ESS), cryogenic cooling is essential for various equipment of the facility. The ESS Superconducting LINAC and the ESS Cryomodule Test Stand, will require major cryogenic services in order to be supplied with liquid nitrogen and helium. Since the use of cryogenic fluids can be associated with Oxygen Depletion Hazard (ODH), the ESS Protection and Safety Systems group will install an ODH Detection System which is a PLC-based alarm system. This system will monitor real time Oxygen concentration levels in designated areas, with the aim to alarm personnel if the oxygen level is detected below certain thresholds. This paper gives an overview about the requirements, system architecture, hardware and software of the ODH Detection System in ESS Accelerator buildings | |||
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Poster TUPHA106 [2.899 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA106 | ||
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WEAPL02 | Automatic PID Performance Monitoring Applied to LHC Cryogenics | ion, controls, operation, monitoring | 1017 |
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At CERN, the LHC (Large Hadron Collider) cryogenic system employs about 4900 PID (Proportional Integral Derivative) regulation loops distributed over the 27 km of the accelerator. Tuning all these regulation loops is a complex task and the systematic monitoring of them should be done in an automated way to be sure that the overall plant performance is improved by identifying the poorest performing PID controllers. It is nearly impossible to check the performance of a regulation loop with a classical threshold technique as the controlled variables could evolve in large operation ranges and the amount of data cannot be manually checked daily. This paper presents the adaptation and the application of an existing regulation indicator performance algorithm on the LHC cryogenic system and the different results obtained in the past year of operation. This technique is generic for any PID feedback control loop, it does not use any process model and needs only a few tuning parameters. The publication also describes the data analytics architecture and the different tools deployed on the CERN control infrastructure to implement the indicator performance algorithm. | |||
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Talk as video stream: https://youtu.be/7dCglp2Pn_c | ||
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Slides WEAPL02 [1.651 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL02 | ||
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WEAPL03 | Simulation of Cryogenic Process and Control of EAST Based on EPICS | ion, controls, simulation, EPICS | 1024 |
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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. |
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Talk as video stream: https://youtu.be/gyqj_Zvls08 | ||
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Slides WEAPL03 [2.911 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL03 | ||
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THPHA030 | Online Analysis for Anticipated Failure Diagnostics of the CERN Cryogenic Systems | ion, controls, operation, diagnostics | 1412 |
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The cryogenic system is one of the most critical component of the CERN Large Hadron Collider (LHC) and its associated experiments ATLAS and CMS. In the past years, the cryogenic team has improved the maintenance plans, the operation procedures and achieved a very high reliability. However, as the recovery time after failure remains the major issue for the cryogenic availability new developments must take place. A new online diagnostic tool is developed to identify and anticipate failures of cryogenics field equipment, based on the acquired knowledge on dynamic simulation for the cryogenic equipment and on previous data analytic studies. After having identified the most critical components, we will develop their associated models together with the signature of their failure modes. The proposed tools will detect deviation between the actual systems and their model or identify preliminary failure signatures. This information will allow the operation team to take early mitigating actions before the failure occurrence. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA030 | ||
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THPHA060 | Conceptual Design of the Cryogenic Control System of CFETR TF Coil Test Facility | ion, controls, operation, software | 1502 |
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Funding: The Key Fund for Outstanding Youth Talent of Anhui Educational Commission of China(NO. 2013SQRL099ZD) China Fusion Engineering Test Reactor (CFETR) is superconducting Tokamak device which is next-generation engineering reactor between ITER and DEMO. It is now being designed by China national integration design group. In the present design, its magnet system consists of 16 Toroidal Field (TF) coils, 6 Center Solenoid (CS) coils and 8 Poloidal Field (PF) coils. A helium refrigerator with an equivalent cooling capacity of 5kW at 4.5K for CFETR TF coil test facility is proposed. It can provide 3.7K & 4.5K supercritical helium for TF coil, 50K cold helium with a 10g/s flow rate for High Temperature superconducting (HTS) current leads and 50K cold helium with a cooling capacity of 1.5kW for thermal shield. This paper presents the conceptual design of cryogenic control system for CFETR TF coil test including of architecture, hardware design and software development. |
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Poster THPHA060 [0.492 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA060 | ||
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THPHA146 | LCLS-II Cryomodule and Cryogenic Distribution Control | ion, controls, PLC, cryomodule | 1729 |
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LCLS-II is a superconducting upgrade to the existing Linear Coherent Light Source at the SLAC National Accelerator Laboratory. Construction is underway with a planned continuous wave beam rate of up to 1 MHz. Two cryogenic plants provide helium to a distribution system, and 37 cryomodules with superconducting cavities will operate with Liquid helium at 2.2K. The cryomodules and distribution system is controlled with networked PLC's and EPICS as an integrated system that work in concert for controlling valves, pressure, flow, and temperature. Interlocks and critical process information is communicated with the Low Level Radio Frequency, vacuum, and magnet systems. Engaging the controls community proved vital in advancing the controls architecture from a conventional design to a centralized, reliable, and cost-effective distributed platform. | |||
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Poster THPHA146 [1.330 MB] | ||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA146 | ||
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