| Paper | Title | Other Keywords | Page |
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| MOPMR027 | Employing Beam-Gas Interaction Vertices for Transverse Profile Measurements | detector, vacuum, emittance, luminosity | 296 |
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Interactions of high-energy beam particles with residual gas offer a unique opportunity to measure the beam profile in a non-intrusive fashion. Such a method was successfully pioneered* at the LHCb experiment using a silicon microstrip vertex detector. During the recent Large Hadron Collider shutdown at CERN, a demonstrator Beam-Gas Vertexing system based on eight scintillating-fibre modules was designed**, constructed and installed on Ring 2 to be operated as a pure beam diagnostics device. The detector signals are read out and collected with LHCb-type front-end electronics and a DAQ system consisting of a CPU farm. Tracks and vertices will be reconstructed to obtain a beam profile in real time. Here, first commissioning results are reported. The advantages and potential for future applications of this technique are discussed.
* LHCb collaboration, Journal of Instrumentation, 9, P12005 ** P. Hopchev in Proc. of IPAC 2014, June 15-20, 2014, Dresden Germany |
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| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-MOPMR027 | ||
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| TUPMY009 | MuSim, a Graphical User Interface for Multiple Simulation Programs | simulation, interface, proton, electron | 1559 |
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| MuSim is a new user-friendly program designed to interface to many different particle simulation codes, regardless of their data formats or geometry descriptions. It presents the user with a compelling graphical user interface that includes a flexible 3-D view of the simulated world plus powerful editing and drag-and-drop capabilities. All aspects of the design can be parametrized so that parameter scans and optimizations are easy. It is simple to create plots and display events in the 3-D viewer (with a slider to vary the transparency of solids), allowing for an effortless comparison of different simulation codes. Simulation codes: G4beamline, MAD-X, and MCNP; more coming. Many accelerator design tools and beam optics codes were written long ago, with primitive user interfaces by today's standards. MuSim is specifically designed to make it easy to interface to such codes, providing a common user experience for all, and permitting the construction and exploration of models with very little overhead. For today's technology-driven students, graphical interfaces meet their expectations far better than text-based tools, and education in accelerator physics is one of our primary goals. | |||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMY009 | ||
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| THPMB005 | Notes on Steffen Parameters of Extended Fringe-Field Quadrupoles | quadrupole, focusing, lattice, optics | 3226 |
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| We consider some theoretical aspects of the Steffen hard-edge model of quadrupoles with extended fringe-fields and discuss possibilities of usage of this model in online beam dynamics applications. | |||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMB005 | ||
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| THPMW006 | The Realization of the System for Rapid Detection of Bepc Ii Magnet Power Supply | power-supply, database, controls, data-acquisition | 3543 |
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| To quickly find the causes of the accelerator unstable or lost beam caused by magnet power supply in the Beijing Electron Positron Collider running, this set of rapid detection system for magnet power supply is developed. The stability of the system in 8 hours is about 0.005%, it can acquire over nearly 500 sets of magnet power supply current value most quickly in the 0.33ms time. All data is written to the MySQL database in real time，So as to be able to quickly troubleshoot magnet power supply problem through historical data analysis of database comparison. | |||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW006 | ||
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| THPMY035 | The Real-time Remote Monitoring of Electric Power System Condition at NSRRC | monitoring, high-voltage, status, operation | 3737 |
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| For monitoring effectively the real time status of NSRRC's electric power system, an electric power quality monitoring system has been set up to measure the power quality of high voltage feeders, which includes the voltage/current phase, the variation of frequency, voltage sags and swells. The measured result will be analyzed and used to further improve the performance of power system. Furthermore, a partial discharge monitoring system was also installed to monitor the phenomena of electric discharges. Using the ultra high frequency discharge sensor, the magnitude and the pulse-per-second of discharge are measured and analysed. It allows the electrical engineers to diagnose the degradation of insulation of the electric equipment beforehand to reduce the power failure. | |||
| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMY035 | ||
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| THPOY031 | A Holistic Approach to Accelerator Reliability Modeling | database, extraction, network, experiment | 4163 |
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Reliability has been identified as a key factor limiting the development of certain particle accelerator applications, for example Accelerator-Driven Systems (ADS) for energy production and waste-transmutation*. Previous studies of particle accelerator reliability have been undertaken using conventional techniques, such as Reliability Block Diagrams (RBD), Fault Tree Analysis (FTA), etc. Although limited data surrounding components and their failure modes limits the applicability of conventional techniques for analysing the reliability of particle accelerators. In addition industrial applications of particle accelerators, i.e. energy production, require a real time response to failure. In this paper we examine a holistic approach to accelerator reliability modelling using Electric Network Frequency (ENF) criterion to look for emergent behaviour of the particle accelerator, from complex datasets, such as beam current/charge, created by the diagnostics systems during the machines operation. To look for predictive characteristics just prior to a machine trip.
* Report from the DOE ADS White Paper Working Group, Stuart Henderson, Fermilab, October 26, 2011 |
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| DOI • | reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOY031 | ||
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