Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543072
K. Hu, Houbing Lu, Xu Wang, Feng Li, Xinxin Wang, Tianru Geng, Hang Yang, L. Han, G. Jin
We will present a DAQ prototype designed for the ATLAS small-strip Thin Gap Chamber (sTGC) Phase-I trigger upgrade. The prototype includes two VMM2 chips developed to read out the signals of the sTGC, a Xilinx Kintex-7 FPGA used for the VMM2 configuration and the events storage, and a Gigabit Ethernet Transceiver (GET) working at the physical layer. The features of the DAQ prototype are described in detail.
{"title":"A DAQ prototype for the ATLAS small-strip Thin Gap Chamber Phase-I trigger upgrade","authors":"K. Hu, Houbing Lu, Xu Wang, Feng Li, Xinxin Wang, Tianru Geng, Hang Yang, L. Han, G. Jin","doi":"10.1109/RTC.2016.7543072","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543072","url":null,"abstract":"We will present a DAQ prototype designed for the ATLAS small-strip Thin Gap Chamber (sTGC) Phase-I trigger upgrade. The prototype includes two VMM2 chips developed to read out the signals of the sTGC, a Xilinx Kintex-7 FPGA used for the VMM2 configuration and the events storage, and a Gigabit Ethernet Transceiver (GET) working at the physical layer. The features of the DAQ prototype are described in detail.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132765882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543083
C. Lian, Liang Futian, Liu Yuzhe, Li Feng, Jin Ge
In this paper, a FPGA-based pulse pile-up rejection method for the high count rate gamma spectrometer of PGNAA is reported. By using fast peak seeking and feedback control, the pulse width can be narrowed then the pile-up events will be reduced. Test results shown that the energy resolution of the spectrometer is closed to the commercial products. For a count rate of 400 kHz, the number of pile-up events is reduced by 15.84%. This method is easy to implement in FPGAs for real-time data processing.
{"title":"A FPGA-based pulse pile-up rejection technique for the spectrum measurement in PGNAA","authors":"C. Lian, Liang Futian, Liu Yuzhe, Li Feng, Jin Ge","doi":"10.1109/RTC.2016.7543083","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543083","url":null,"abstract":"In this paper, a FPGA-based pulse pile-up rejection method for the high count rate gamma spectrometer of PGNAA is reported. By using fast peak seeking and feedback control, the pulse width can be narrowed then the pile-up events will be reduced. Test results shown that the energy resolution of the spectrometer is closed to the commercial products. For a count rate of 400 kHz, the number of pile-up events is reduced by 15.84%. This method is easy to implement in FPGAs for real-time data processing.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"467 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133133803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543139
J. Nieto, M. Ruiz, S. Esquembri, G. de Arcas, E. Barrera, A. Gracia
The large amount of data generated by image diagnostics used in big physics experiments requires an efficient use of hardware technologies in real time data acquisition and processing applications. In order to get the best performance of the hardware, it is necessary to provide the hardware and software tools that enable a fast and easy way to deployment these kind of solutions. IRIO technology allows an easy development of advanced data acquisition applications and their integration in EPICS using National Instruments Reconfigurable Input/Output (RIO) FPGA-based cards. Using IRIO software tools, it is possible to minimize the development time to build specific application for different hardware configurations. IRIO uses the open source version of NI-RIO Linux device driver supporting direct DMA access from FlexRIO devices to NVIDIA GPUs. For the development of image processing applications the hardware platform selected has been implemented using a FlexRIO device with a cameralink adapter module and a NVIDIA Kepler architecture GPU. With the help of IRIO tools the user have to focus the development exclusively in the implementation of the FPGA application for the FlexRIO device using LabVIEW/FPGA and the GPU algorithm using NVIDIA CUDA tools. Additionally IRIO provides the EPICS integration for these applications using the software model developed by ITER and Cosylab that simplifies the development of EPICS device support by mean of Nominal Device Support approach. This is a set of libraries with C++ classes simplifying the development of these device supports. To demonstrate the full development cycle an algorithm for image compression based on JPEG standard has been evaluated and tested using a hardware configuration with the same elements defined in the ITER fast controllers hardware catalog. This image standard allows high compression ratios and can include additional metadata information related to the image. These software tools has been tested in ITER CCS (Codac Core System).
{"title":"Image acquisition and GPU processing application using IRIO technology and FlexRIO devices","authors":"J. Nieto, M. Ruiz, S. Esquembri, G. de Arcas, E. Barrera, A. Gracia","doi":"10.1109/RTC.2016.7543139","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543139","url":null,"abstract":"The large amount of data generated by image diagnostics used in big physics experiments requires an efficient use of hardware technologies in real time data acquisition and processing applications. In order to get the best performance of the hardware, it is necessary to provide the hardware and software tools that enable a fast and easy way to deployment these kind of solutions. IRIO technology allows an easy development of advanced data acquisition applications and their integration in EPICS using National Instruments Reconfigurable Input/Output (RIO) FPGA-based cards. Using IRIO software tools, it is possible to minimize the development time to build specific application for different hardware configurations. IRIO uses the open source version of NI-RIO Linux device driver supporting direct DMA access from FlexRIO devices to NVIDIA GPUs. For the development of image processing applications the hardware platform selected has been implemented using a FlexRIO device with a cameralink adapter module and a NVIDIA Kepler architecture GPU. With the help of IRIO tools the user have to focus the development exclusively in the implementation of the FPGA application for the FlexRIO device using LabVIEW/FPGA and the GPU algorithm using NVIDIA CUDA tools. Additionally IRIO provides the EPICS integration for these applications using the software model developed by ITER and Cosylab that simplifies the development of EPICS device support by mean of Nominal Device Support approach. This is a set of libraries with C++ classes simplifying the development of these device supports. To demonstrate the full development cycle an algorithm for image compression based on JPEG standard has been evaluated and tested using a hardware configuration with the same elements defined in the ITER fast controllers hardware catalog. This image standard allows high compression ratios and can include additional metadata information related to the image. These software tools has been tested in ITER CCS (Codac Core System).","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122372540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543131
Wei Zheng, F. Hu, Ming Zhang, T. Yuan, Xueqing Zhao, Yinan Zhou, Jie Chen, Li Gao, Yang Liu, Yuan Pan
The J-TEXT newly deployed three-wave polarimeter-interferometer (POLARIS) system provides a better time and spatial resolution of the plasma electronic density than the old HCN interferometer system. The plasma electron density feedback control system is implemented on the already existing POLARIS DAQ system which is based on FlexRIO FPGA. Another FlexRIO board with an output module is added to implement the feedback control algorithm and feed the output to the piezoelectric crystal valve. The density feedback control system is able to extract the phase difference information from the intermedia frequency signal using FFT, calculate density of multiple channels and output control signal to the piezoelectric crystal valve in real-time. NI P2P technology is used to transfer processed data from a FlexRIO board to another in real-time without using the CPU. This system is also able to calculate density profile. With the density profile it can use compensated central chord line integrated or average density as control target. Also the real-time density profile data is useful for future plasma control system and disruption detection system.
{"title":"Real-time plasma electron density feedback control system based on FPGA on J-TEXT","authors":"Wei Zheng, F. Hu, Ming Zhang, T. Yuan, Xueqing Zhao, Yinan Zhou, Jie Chen, Li Gao, Yang Liu, Yuan Pan","doi":"10.1109/RTC.2016.7543131","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543131","url":null,"abstract":"The J-TEXT newly deployed three-wave polarimeter-interferometer (POLARIS) system provides a better time and spatial resolution of the plasma electronic density than the old HCN interferometer system. The plasma electron density feedback control system is implemented on the already existing POLARIS DAQ system which is based on FlexRIO FPGA. Another FlexRIO board with an output module is added to implement the feedback control algorithm and feed the output to the piezoelectric crystal valve. The density feedback control system is able to extract the phase difference information from the intermedia frequency signal using FFT, calculate density of multiple channels and output control signal to the piezoelectric crystal valve in real-time. NI P2P technology is used to transfer processed data from a FlexRIO board to another in real-time without using the CPU. This system is also able to calculate density profile. With the density profile it can use compensated central chord line integrated or average density as control target. Also the real-time density profile data is useful for future plasma control system and disruption detection system.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130738654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543116
M. Bernard, G. Montemont, S. Stanchina, S. Mancini, L. Verger
Single Photon Emission Tomography (SPECT) is mainly limited by the trade-off between spatial resolution and sensitivity determined by the collimation. In this context, CdZnTe detectors enable higher intrinsic spatial resolution compared to previously used scintillators, even improved by using techniques for 3D positioning. Moreover, the compactness of these detectors enables new system architectures. To improve the sensitivity of SPECT systems without degrading their spatial resolution, a possible way is to adapt the field of view depending on the kind of acquisition and the morphology of the patient, using flexible detection heads. That means computing reconstruction fast enough to determine interesting area where to focus detectors. This task is problematic because of the complexity of data to be processed, as the high resolution of detectors makes measurements sparse, and because of the dependency of reconstruction to head position, that must be taken into account. The aim of the present study is to propose new approaches to deal with this massive amount of complex information in real time to dynamically adapt the field of view. Implementation techniques from MLEM algorithm are proposed in order to fasten the reconstruction and adapt the geometrical configuration during the examination, and thus improve the sensitivity of the system without degrading its spatial resolution.
{"title":"Enabling real-time reconstruction for high intrinsic resolution SPECT systems","authors":"M. Bernard, G. Montemont, S. Stanchina, S. Mancini, L. Verger","doi":"10.1109/RTC.2016.7543116","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543116","url":null,"abstract":"Single Photon Emission Tomography (SPECT) is mainly limited by the trade-off between spatial resolution and sensitivity determined by the collimation. In this context, CdZnTe detectors enable higher intrinsic spatial resolution compared to previously used scintillators, even improved by using techniques for 3D positioning. Moreover, the compactness of these detectors enables new system architectures. To improve the sensitivity of SPECT systems without degrading their spatial resolution, a possible way is to adapt the field of view depending on the kind of acquisition and the morphology of the patient, using flexible detection heads. That means computing reconstruction fast enough to determine interesting area where to focus detectors. This task is problematic because of the complexity of data to be processed, as the high resolution of detectors makes measurements sparse, and because of the dependency of reconstruction to head position, that must be taken into account. The aim of the present study is to propose new approaches to deal with this massive amount of complex information in real time to dynamically adapt the field of view. Implementation techniques from MLEM algorithm are proposed in order to fasten the reconstruction and adapt the geometrical configuration during the examination, and thus improve the sensitivity of the system without degrading its spatial resolution.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133010156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543098
Y. Geerebaert, D. Bernard, P. Bruel, M. Frotin, B. Giebels, P. Gros, D. Horan, M. Louzir, P. Poilleux, I. Semeniouk, Shaobo Wang, D. Attié, D. Calvet, P. Colas, A. Delbart, P. Sizun, D. Gotz, S. Amano, S. Hashimoto, T. Kotaka, Y. Minamiyama, S. Miyamoto, A. Takemoto, M. Yamaguchi, S. Daté, H. Ohkuma
We designed and built an experimental apparatus based on a time projection chamber, a novel scheme for high performance γ-ray astronomy and polarimetry in the γ → e+e- regime. This presentation focuses on the electronics aspect of the detector and, in particular, on the versatile dedicated trigger system that we have developed which allowed us to take data on beam with a high γ-conversion signal efficiency and a high rejection factor for single tracks and upstream conversion background events. Our scheme allows for the selective collection of γ conversions in a high-background-rate environment, such as that which is present in orbit, with a fine 3D imaging of the events and very low (in particular electronics) background, at a mild cost in terms of the number of electronics channels and therefore of electrical power consumption.
{"title":"Electronics for HARPO: Design, development and validation of electronics for a high performance polarised-Gamma-ray detector","authors":"Y. Geerebaert, D. Bernard, P. Bruel, M. Frotin, B. Giebels, P. Gros, D. Horan, M. Louzir, P. Poilleux, I. Semeniouk, Shaobo Wang, D. Attié, D. Calvet, P. Colas, A. Delbart, P. Sizun, D. Gotz, S. Amano, S. Hashimoto, T. Kotaka, Y. Minamiyama, S. Miyamoto, A. Takemoto, M. Yamaguchi, S. Daté, H. Ohkuma","doi":"10.1109/RTC.2016.7543098","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543098","url":null,"abstract":"We designed and built an experimental apparatus based on a time projection chamber, a novel scheme for high performance γ-ray astronomy and polarimetry in the γ → e+e- regime. This presentation focuses on the electronics aspect of the detector and, in particular, on the versatile dedicated trigger system that we have developed which allowed us to take data on beam with a high γ-conversion signal efficiency and a high rejection factor for single tracks and upstream conversion background events. Our scheme allows for the selective collection of γ conversions in a high-background-rate environment, such as that which is present in orbit, with a fine 3D imaging of the events and very low (in particular electronics) background, at a mild cost in terms of the number of electronics channels and therefore of electrical power consumption.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125362820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543075
Jianbo Xi, Xiaoguang Zhang, Shitao Xiang, H. Liang
To reduce the cost and minimize the occupying volume of the transmission cables in the spectrometer, some middle and low energy particle physics experiment employ serial daisy-chain techniques, which organize the front-end cards (FECs) in a daisy-chain topology, and data is transferred in a serial mode from FECs to the rear-end electronics. However, this technique has an obvious limitation in that the failure of a single component will disable the entire data chain. As the only solution, a data chain reconstruction technology is proposed based on the front-end electronics of the Beijing Spectrometer (BESIII) muon identification system. This technology can automatically disconnect malfunctioning front-end cards and reorganize the data transmission channel to minimize the loss of data. In this paper, we report our work on the design of data chain reconstruction, focusing on the realization of data reconstruction using highly reliable anti-fuse field programmable gate arrays (FPGAs), on the prevention of short circuits, and on fault tolerance improvement. A prototype of the reconstructing data chain designed for the front-end electronics of the BESIII muon identification system has fulfilled the requirements of a laboratory environment and is able to now be applied in an actual experiment.
{"title":"Data chain reconstructing technology for the front-end electronics of the BESIII muon identification system","authors":"Jianbo Xi, Xiaoguang Zhang, Shitao Xiang, H. Liang","doi":"10.1109/RTC.2016.7543075","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543075","url":null,"abstract":"To reduce the cost and minimize the occupying volume of the transmission cables in the spectrometer, some middle and low energy particle physics experiment employ serial daisy-chain techniques, which organize the front-end cards (FECs) in a daisy-chain topology, and data is transferred in a serial mode from FECs to the rear-end electronics. However, this technique has an obvious limitation in that the failure of a single component will disable the entire data chain. As the only solution, a data chain reconstruction technology is proposed based on the front-end electronics of the Beijing Spectrometer (BESIII) muon identification system. This technology can automatically disconnect malfunctioning front-end cards and reorganize the data transmission channel to minimize the loss of data. In this paper, we report our work on the design of data chain reconstruction, focusing on the realization of data reconstruction using highly reliable anti-fuse field programmable gate arrays (FPGAs), on the prevention of short circuits, and on fault tolerance improvement. A prototype of the reconstructing data chain designed for the front-end electronics of the BESIII muon identification system has fulfilled the requirements of a laboratory environment and is able to now be applied in an actual experiment.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125454118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543145
D. Kotchetkov, M. Andrew, T. Browder, Julien Cercillieux, S. Covin, Shawn Dubey, C. Ketter, L. Macchiarulo, Curtis McLellan, M. Rosen, Ziru Sang, Roy Tom, G. Varner
An electronic readout system for a novel 8192-channel Belle II imaging Time of Propagation detector was designed, built and integrated. The purpose of this Cerenkov detector is to identify charged hadrons with high precision. Sampling of the analog waveforms is achieved through switched-capacitor arrays, while data acquisition is done by Xilinx Zynq FPGAs.
{"title":"Readout electronics for Belle II imaging time of propagation detector","authors":"D. Kotchetkov, M. Andrew, T. Browder, Julien Cercillieux, S. Covin, Shawn Dubey, C. Ketter, L. Macchiarulo, Curtis McLellan, M. Rosen, Ziru Sang, Roy Tom, G. Varner","doi":"10.1109/RTC.2016.7543145","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543145","url":null,"abstract":"An electronic readout system for a novel 8192-channel Belle II imaging Time of Propagation detector was designed, built and integrated. The purpose of this Cerenkov detector is to identify charged hadrons with high precision. Sampling of the analog waveforms is achieved through switched-capacitor arrays, while data acquisition is done by Xilinx Zynq FPGAs.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126825591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543174
C. Lee, Seungryong Han, Jae Whal Shin, J. Yun
Safety analysis for a nuclear power plant establishes not only an analytical limit in terms of a measured or calculated variable but also an analytical response time required to complete protective action after the analytical limit is reached. If the two constraints are met, the safety limit selected to maintain the integrity of physical barriers used for preventing uncontrolled radioactivity release will not be exceeded during anticipated operational occurrences and postulated accidents. Setpoint determination methodologies have been actively developed to ensure that protective action is initiated before the process conditions reach the analytical limit. However, regarding the analytical response time for the plant protection system (PPS), an integrated evaluation methodology considering the whole design process has not been systematically studied. In order to assure the safety of nuclear power plants, this paper proposes a systematic and integrated response time evaluation methodology that covers safety analyses, system designs, response time analyses, and response time tests. This methodology is applied to the PPS for the advanced power reactor 1400 nuclear power plant in Korea. The quantitative evaluation results are provided herein. The evaluation results using the proposed methodology demonstrate that the PPS completely satisfies the requirement of the analytical response time.
{"title":"Development of integrated response time evaluation methodology for the plant protection system","authors":"C. Lee, Seungryong Han, Jae Whal Shin, J. Yun","doi":"10.1109/RTC.2016.7543174","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543174","url":null,"abstract":"Safety analysis for a nuclear power plant establishes not only an analytical limit in terms of a measured or calculated variable but also an analytical response time required to complete protective action after the analytical limit is reached. If the two constraints are met, the safety limit selected to maintain the integrity of physical barriers used for preventing uncontrolled radioactivity release will not be exceeded during anticipated operational occurrences and postulated accidents. Setpoint determination methodologies have been actively developed to ensure that protective action is initiated before the process conditions reach the analytical limit. However, regarding the analytical response time for the plant protection system (PPS), an integrated evaluation methodology considering the whole design process has not been systematically studied. In order to assure the safety of nuclear power plants, this paper proposes a systematic and integrated response time evaluation methodology that covers safety analyses, system designs, response time analyses, and response time tests. This methodology is applied to the PPS for the advanced power reactor 1400 nuclear power plant in Korea. The quantitative evaluation results are provided herein. The evaluation results using the proposed methodology demonstrate that the PPS completely satisfies the requirement of the analytical response time.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116096155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2016-06-06DOI: 10.1109/RTC.2016.7543107
D. Alves, S. Jackson, I. Rodis
The system for the beam-based feedbacks in the LHC is one of the most complex in CERN's accelerator complex. It is an essential system for the operation of the LHC and is routinely used to simultaneously control the beam orbit, machine tune, and radial-loop adjusting the beam energy. The system handles the input of over 2'000 measurements, and controls the current in over 1'000 superconducting dipole correction magnets, over 200 quadrupole correction magnets as well as the RF frequency used to generate the electric field accelerating the particle beams. Recently, a new team was charged with maintaining, documenting and upgrading the software in order to meet the requirements for LHCs 2nd run. The team identified several requirements: 1) gather statistics on the relative offsets of the arrival of measurement data, 2) inspect RT I/O in a user-friendly way, 3) display summarized status information on the synchronism and content of the input data, 4) have the means to rapidly diagnose problems with the feedbacks during commissioning and operation in a non-intrusive way (i.e. without compromising the feedback systems real-time behavior). This paper documents the design, integration and use of the resulting monitoring suite for the LHC beam-based feedback systems. The set-up comprises a FESA-based (framework for real-time systems developed at CERN) real-time server and a JavaFX-based graphical interface integrated into CERNs operational software infrastructure. Concrete examples are given on how this system has contributed to a better understanding of the overall feedback behavior and aided in diagnosing operational problems. The paper will also summarize envisaged requirements for future releases.
{"title":"A monitoring system for the beam-based feedbacks in the LHC","authors":"D. Alves, S. Jackson, I. Rodis","doi":"10.1109/RTC.2016.7543107","DOIUrl":"https://doi.org/10.1109/RTC.2016.7543107","url":null,"abstract":"The system for the beam-based feedbacks in the LHC is one of the most complex in CERN's accelerator complex. It is an essential system for the operation of the LHC and is routinely used to simultaneously control the beam orbit, machine tune, and radial-loop adjusting the beam energy. The system handles the input of over 2'000 measurements, and controls the current in over 1'000 superconducting dipole correction magnets, over 200 quadrupole correction magnets as well as the RF frequency used to generate the electric field accelerating the particle beams. Recently, a new team was charged with maintaining, documenting and upgrading the software in order to meet the requirements for LHCs 2nd run. The team identified several requirements: 1) gather statistics on the relative offsets of the arrival of measurement data, 2) inspect RT I/O in a user-friendly way, 3) display summarized status information on the synchronism and content of the input data, 4) have the means to rapidly diagnose problems with the feedbacks during commissioning and operation in a non-intrusive way (i.e. without compromising the feedback systems real-time behavior). This paper documents the design, integration and use of the resulting monitoring suite for the LHC beam-based feedback systems. The set-up comprises a FESA-based (framework for real-time systems developed at CERN) real-time server and a JavaFX-based graphical interface integrated into CERNs operational software infrastructure. Concrete examples are given on how this system has contributed to a better understanding of the overall feedback behavior and aided in diagnosing operational problems. The paper will also summarize envisaged requirements for future releases.","PeriodicalId":383702,"journal":{"name":"2016 IEEE-NPSS Real Time Conference (RT)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121253373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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