Systems Engineering, Project Management
Paper Title Page
MOD3I01 Bayesian Reliability Model for Beam Permit System of RHIC at BNL 1
 
  • P. Chitnis
    Stony Brook University, Stony Brook, New York, USA
  • K.A. Brown
    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.
Bayesian Analysis provides a statistical framework for updating prior knowledge as observational evidence is acquired. It can handle complex and realistic models with flexibility. The Beam Permit System (BPS) of RHIC plays a key role in safeguarding against the faults occurring in the collider, hence directly impacts RHIC availability. Earlier a multistate reliability model* was developed to study the failure characteristics of the BPS that incorporated manufacturer and military handbook data. Over the course of its 15 years of operation, RHIC has brought forth operational failure data. This work aims towards the integration of earlier reliability calculations with operational failure data using Bayesian analysis. This paper discusses the Bayesian inference of the BPS reliability using a two-parameter Weibull survival model, with unknown scale and shape parameters. As the joint posterior distribution for Weibull with both parameters unknown is analytically intractable, the Markov Chain Monte Carlo methodology with Metropolis-Hastings algorithm is used to obtain the inference. Selection criteria for the Weibull distribution, prior density and hyperparameters are also discussed.
*P. Chitnis et al., 'A Monte Carlo Simulation Approach to the Reliability Modeling of the Beam Permit System of Relativistic Heavy Ion Collider (RHIC) at BNL', Proc. of ICALEPCS'13, San Francisco, CA.
 
slides icon Slides MOD3I01 [3.929 MB]  
 
MOD3O02 Continuous Delivery at SOLEIL 1
 
  • G. Abeillé, A. Buteau, X. Elattaoui, S. Lê
    SOLEIL, Gif-sur-Yvette, France
  • G. Boissinot
    ZENIKA, Paris, France
 
  IT Department of Synchrotron SOLEIL* is structured along of a team of software developers responsible for the development and maintenance of all software from hardware controls up to supervision applications. With a very heterogonous environment such as, several software languages, strongly coupled components and an increasing number of releases, it has become mandatory to standardize the entire development process through a 'Continuous Delivery approach'; making it easy to release and deploy on time at any time. We achieved our objectives by building up a Continuous Delivery system around two aspects, Deployment Pipeline** and DevOps***. A deployment pipeline is achievable by extensively automating all stages of the delivery process (the continuous integration of software, the binaries build and the integration tests). Another key point of Continuous Delivery is also a close collaboration between software developers and system administrators, often known as the DevOps movement. This paper details the feedbacks on this Continuous Delivery approach has been adopted, modifying daily development team life and give an overview of the future steps.
*http://www.synchrotron-soleil.fr/.**http://martinfowler.com/bliki/DeploymentPipeline.html***https://sdarchitect.wordpress.com/2012/07/24/understanding-devops-part-1-defining-devops/.
 
slides icon Slides MOD3O02 [1.882 MB]  
 
MOD3O03 Shot Rate Improvement Strive for the National Ignition Facility (NIF) 1
 
  • G.K. Brunton, G.A. Bowers, A.D. Conder, J.-M.G. Di Nicola, P. Di Nicola, M.A. Fedorov, B.T. Fishler, R. Fleming, D.H. Kalantar, G. Lau, D.G. Mathisen, V.J. Miller Kamm, V. Pacheu, M. Paul, R.K. Reed, J. Rouse, R.J. Sanchez, M.J. Shaw, E.A. Stout, S. Weaver, E.F. Wilson
    LLNL, Livermore, California, USA
 
  Funding: This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.
The National Ignition Facility (NIF) is the world's largest and most energetic laser experimental facility with 192 beams capable of delivering 1.8 megajoules of 500-terawatt ultraviolet laser energy. The energy, temperatures and pressures capable of being generated allow scientists the ability to generate conditions similar to the center of the sun and explore physics of planetary interiors, supernovae, black holes and thermonuclear burn. NIF has transitioned to a 24x7 operational facility and in the past year significant focus has been placed on increasing the volume of experimental shots capable of being conducted so as to satisfy the demand from the wide range of user groups. The goal for the current fiscal year is a shot rate of 300 (> 50% increase over the previous year), increasing to a sustainable rate of 400 the year after. The primary focus areas to achieve these increases are; making more shot time available, improvements in experiment scheduling, and reducing the duration of a shot cycle. This paper will discuss the control system improvements implemented and planned to reduce the shot cycle duration and the systematic approaches taken to identify and prioritize them.
 
slides icon Slides MOD3O03 [3.415 MB]  
 
MOD3O04 Introducing the SCRUM Framework as Part of the Product Development Strategy for the ALBA Control System 1
 
  • G. Cuní, F. Becheri, D. Fernandez-Carreiras, Z. Reszela, S. Rubio-Manrique
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
 
  At Alba, the Controls Section provides the software that is needed to operate the accelerators, the beamlines and the peripheral laboratories. It covers a wide range of areas or subsystems like vacuum, motion, data acquisition and analysis, graphical interfaces, or archiving. Since the installation and commissioning phases, we have been producing the software solutions mostly in single-developer projects based on the personal criteria. This organization scheme allowed each control engineer to gain the expertise in particular areas by being the unit contact responsible to develop and deliver products. In order to enrich the designs and improve the quality of solutions we have grouped the engineers in teams. The hierarchy of the product backlogs, represents the desired features and the known defects in a transparent way. Instead of planning the whole project upfront, we try to design the products incrementally and develop them in short iterations mitigating the risk of not satisfying the emerging user requirements. This paper describes the introduction of the Scrum framework as the product development strategy in a service oriented organization like the Computing Division at Alba*.
*D. Fernández-Carreiras et al., 'Using Prince2 and ITIL Practices for Computing Project and Service Management in a Scientific Installation', TUMIB01, Proc. of ICALEPCS'13, San Francisco, CA.
 
slides icon Slides MOD3O04 [2.251 MB]  
 
MOD3O05 Use of Automation in Commissioning Process of the Undulators of the European X-Ray Free Electron Laser 1
 
  • S. Karabekyan, J. Pflüger
    XFEL. EU, Hamburg, Germany
  • L. Lin, Y.T. Liu
    USTC/NSRL, Hefei, Anhui, People's Republic of China
  • W. Wang
    Hisense Co. Ltd., Qingdao, People's Republic of China
 
  For operation of the three undulator systems of the European XFEL, a total of 91 undulators are needed and have been produced. For production, magnetic measurements, tuning and commissioning of these devices only two years were foreseen by the project schedule. For these purposes, automated and optimized procedures were needed to accomplish a number of workflows, time-consuming adjustments and commissioning tasks. We created several automation programs which allowed us to reduce the time spent on the commissioning of the control system by an order of magnitude.  
slides icon Slides MOD3O05 [4.335 MB]  
 
MOD3O06 Interface Management for SKA Telescope Manager 1
 
  • P.S. Swart, G.M. le Roux
    SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa
  • A. Marassi, R. Smareglia
    INAF-OAT, Trieste, Italy
  • S. Roy Chaudhuri
    Tata Research Development and Design Centre, Pune, India
  • S. Vrcic
    NRC-Herzberg, Penticton, BC, Canada
 
  The Square Kilometre Array (SKA) project is currently in the Pre-construction Phase. During this phase, the telescope subsystems are being designed. The Telescope Manager (TM) is a supervisory control and monitoring subsystem in each of the two radio telescopes of the SKA (SKA1-Low and SKA1-Mid). The TM interfaces with a number of diverse telescope subsystems. Interaction between TM and these subsystems is a major source of requirements for the TM. Careful management of TM external interfaces is therefore important. This discussion is a case study of TM interface management. Firstly, how system architectural design aspects like separation of concerns in the control hierarchy reduce telescope complexity with regards to interfaces is discussed. Secondly, the standardisation approach for monitoring and control interfaces to facilitate early elicitation of interface requirements for the TM, and to manage the diversity of interfacing subsystems is discussed. Thirdly, the relations between interface definition and requirements analysis activities, using SysML representations as an example is discussed.
* paul@ska.ac.za
 
slides icon Slides MOD3O06 [2.607 MB]  
 
MOM310 Nonlinear System Identification of Superconducting Magnets of RHIC at BNL 1
 
  • P. Chitnis
    Stony Brook University, Stony Brook, New York, USA
  • K.A. Brown
    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 Quench Detection System (QDS) of RHIC detects the Superconducting (SC) magnet quenches by voltage sensing. The real-time voltage across the SC magnet is compared with a predicted voltage from a behavioral model, a deviation from which triggers the quench event and energy extraction. Due to the limitations of the magnet model, many false quench events are generated that affect the RHIC availability. This work is targeted towards remodeling the magnets through nonlinear system identification for the improvement in QDS reliability. The nonlinear electrical behavior of the SC magnets is investigated by statistical data analysis of magnet current and voltage signals. Many data cleaning techniques are employed to reduce the noise in the observed data. Piecewise regression has been used to examine the saturation effects in magnet inductance. The goodness-of-fit of the model is assessed by field testing and comprehensive residual analysis. Finally a new model is suggested for the magnets to be implemented for more accurate results.
 
slides icon Slides MOM310 [0.822 MB]  
poster icon Poster MOM310 [1.028 MB]  
 
MOM311 ALMA Release Management: A Practical Approach 1
 
  • R. Soto, N. Saez, T.C. Shen
    ALMA Observatory, Santiago, Chile
  • J.P.A. Ibsen
    ESO, Santiago, Chile
 
  The ALMA software is a large collection of modules, which implements the functionality needed for the observatory day-to-day operations. The main ALMA software components include: array/antenna control/correlator, submission/processing of science proposals, telescope calibration and data archiving. The implementation of new features and improvements for every software subsystem must be coordinated by considering developers schedule, observatory milestones and testing resources available to verify new software. This paper describes the software delivery process adopted by ALMA since the construction phase and its evolution until these days. It also presents the acceptance procedure implemented by the observatory for validating the software used for science operations. Main roles of the software delivery and acceptance processes are mentioned on this paper by including their responsibility at the different development and testing phases. Finally, some ideas are presented about how the model should change in the near future by considering the operational reality of ALMA Observatory.  
slides icon Slides MOM311 [3.471 MB]  
poster icon Poster MOM311 [16.924 MB]  
 
MOPGF072 Hot Checkout for 12 GeV at Jefferson Lab 1
 
  • R.J. Slominski, T. L. Larrieu
    JLab, Newport News, Virginia, USA
 
  Funding: Authored by Jefferson Science Associates, LLC under U.S. DOE Contract No. DE-AC05-06OR23177. The U.S. Government retains a non-exclusive, paid-up, irrevocable, world-wide license to this manuscript.
A new hot checkout process was implemented at Jefferson Lab for the upgraded 12 GeV accelerator. The previous process proved insufficient in the fall of 2011 when a fire broke out in a septa magnet along the beam line due to a lack of communication about the status of systems. The improved process provides rigorous verification of system readiness thus protecting property while minimizing program delays. To achieve these goals, a database and web application were created to maintain an accurate list of machine components and coordinate and record verification checks by each responsible group. The process requires groups to publish checklists detailing each system check to encourage good work practice. Within groups, the process encourages two independent checks of each component: the first by a technician, and a second by the group leader. Finally, the application provides a dashboard display of checkout progress for each system and beam destination of the machine allowing for informed management decisions. Successful deployment of the new process has led to safe and efficient machine commissioning.
 
poster icon Poster MOPGF072 [3.862 MB]  
 
MOPGF098 PandA Motion Project - A Collaboration Between SOLEIL and Diamond to Upgrade Their 'Position and Acquisition' Processing Platform. 1
 
  • I.S. Uzun, T.M. Cobb, A.M. Cousins, M.T. Heron
    DLS, Oxfordshire, United Kingdom
  • Y.-M. Abiven, J. Bisou, P. Monteiro, G. Renaud
    SOLEIL, Gif-sur-Yvette, France
 
  Synchrotron SOLEIL and Diamond Light Source are two third generation light sources located respectively in France and the UK. In the past 5 years, both facilities separately developed their own platform permitting encoder processing to synchronize motion systems and acquisition during experiments, SPIETBOX by SOLEIL and Zebra by Diamond. New operational requirements for simultaneous and multi-technique scanning, and support of multiple encoder standards have been identified by both institutes. In order to address these a collaborative project has been initiated between SOLEIL and Diamond to realize a new 'Position and Acquisition' processing platform, called PandA. The PandA project addresses current systems' limitations in term of obsolescence and need for more processing power. Its design is going to be a 1U standalone system powered by a Xilinx Zynq SoC to implement a configurable set of logic functionalities. It will provide a flexible and open solution to interface different third party hardware (detectors and motion Controllers). This paper details the organization of this collaboration, sharing technical leadership between both institutes and the status of the project.  
poster icon Poster MOPGF098 [1.953 MB]  
 
MOPGF150 Improving SOLEIL Computing Operation with a Service-Oriented Approach 1
 
  • A. Buteau, G. Abeillé, B. Gagey
    SOLEIL, Gif-sur-Yvette, France
  • J.C. Fouquet
    JCF, PARIS, France
 
  SOLEIL Computing division continuously needs to enhance its operational activities and minimize the workload of IT groups because IT performances directly impacts accelerators and beamlines operations in a context of an increase of the overall technical and organizational complexity. The Control & Data Acquisition group changed in 2013 it internal projects and support organization toward a service-oriented approach. This promising first step pointed out that enhancing the service delivered to our customers required to agree with them on a common vocabulary, on semantics and on operational processes. The ITIL* methodology appeared then as very good starting point to this purpose. This paper will describe the overall vision of our project 'Improving IT operation with a service oriented approach' and will detail the first ITIL operational processes we have adopted and how it helped us clarifying roles and responsibilities within our IT organization. In order to conclude the paper will give perspectives of using ITIL practices to enhance operational practices of other technical groups which activities strongly impact the service delivered to SOLEIL end users.
*http://en.wikipedia.org/wiki/InformationTechnologyInfrastructureLibrary
 
poster icon Poster MOPGF150 [2.658 MB]  
 
MOPGF171 Active Magnetic Bearings System Upgrade for LHC Cryogenic Cold Compressor, Radiations Mitigation Project (R2E) 1
 
  • M. Pezzetti
    CERN, Geneva, Switzerland
  • P. Arpaia
    Naples University Federico II, Science and Technology Pole, Napoli, Italy
  • M. Girone
    U. Sannio, Benevento, Italy
  • M. Hubatka
    MECOS AG, Winterthur, Switzerland
 
  During the normal operation of the Large Hadron Collider, the high hadron flux level induced several Single Event Errors (SEE failure caused by a particle passing through) to the standard electronics installed. Such events perturbed LHC normal operation. As a consequence, a mitigation plan to minimise radiation-induced failures and optimise LHC operation was started: R2E mitigation project. This paper will deal with the mitigation problem for LHC/P8 equipment and the main improvements for the equipment in P4, with special focus on the controllers for the Active Magnetic Bearings used in the IHI-LINDE cold compressors. In addition, a new approach based on frequency response analysis to assess the cold compressor mechanical quality will be presented. The hardware and software design, implemented to increase the global reliability of the system, will be highlighted. A corresponding experiment protocol was developed at CERN in collaboration with the MECOS Company and the Universities of Sannio and Napoli Federico II. Preliminary experimental results showing the performance of the proposed approach on a case study for the cold compressor in P4 will be finally reported.  
 
MOPGF172 Bringing Quality in the Controls Software Delivery Process 1
 
  • Z. Reszela, G. Cuní, C.M. Falcón Torres, D. Fernandez-Carreiras, G. Jover-Mañas, C. Pascual-Izarra, R. Pastor Ortiz, M. Rosanes Siscart, S. Rubio-Manrique
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
 
  The Alba Controls Group develops and operates a diverse variety of controls software which is shared within international communities of users and developers. This includes: generic frameworks like Sardana* and Taurus**, numerous Tango*** device servers and applications where, among others, we can find PyAlarm and Panic****, and specific experiment procedures and hardware controllers. A study has commenced on how to improve the delivery process of our software from the hands of developers to laboratories, by making this process more reliable, predictable and risk-controlled. Automated unit and acceptance tests combined with the continuous integration, have been introduced, providing valuable and fast feedback to the developers. In order to renew and automate our legacy packaging and deployment system we have evaluated modern alternatives. The above practices were brought together into a design of the continuous delivery pipelines which were validated on a set of diverse software. This paper presents this study, its results and a proposal of the cost-effective implementation.
*http://taurus-scada.org**http://sardana-controls.org***http://tango-controls.org****S. Rubio-Manrique, 'PANIC a Suite for Visualization, Logging and Notification of Incidents', Proc. of PCaPAC(2014).
 
poster icon Poster MOPGF172 [1.243 MB]  
 
MOPGF174 Laser - Driven Hadron Therapy Project 1
 
  • F. Scarlat, A.M. Scarisoreanu
    INFLPR, Bucharest - Magurele, Romania
  • Fl. Scarlat
    Bit Solutions, Bucharest, Romania
  • N. Verga
    Univerity of Medicine and Pharmacy 'Carol Davila', Bucharest, Romania
 
  The laser beam (10 PW, 15 fs, 150 J, 1023 W/cm2) generated by APOLLON Laser System, now under construction on Magurele Platform near Bucharest may also be applied in radiotherapy. Starting from this potential application, location of malign tumors in patient may be situated, e.g., superficial (≤5 cm), semi-deep (5-10 cm) and profound (>10-40 cm). This paper presents the main physical parameters of a research project for a therapy based on hadrons controlled by laser, for the treatment of superficial and semi-deep tumors. Energies required for pin-pointing the depth of such tumors are 50-117 MeV for protons and 100'216 MeV/u for carbon ions. Hadron beams with such energies can be generated by the mechanism Radiation Pressure Acceleration (RPA). Besides, the control systems to provide the daily absorbed dose from the direct and indirect ionizing radiation at the level of the malign tumor of 2 Gy in 1 or 2 minutes with expanded uncertainty of 3 % are presented.  
 
MOPGF176 Control System Challenges from an Upgrade to the Diamond Light Source Storage Ring 1
 
  • M.T. Heron, A.J. Rose
    DLS, Oxfordshire, United Kingdom
 
  In 2016 Diamond Light Source will replace one double bend achromatic cell of the Storage Ring with two double bend achromatic cells in the same longitudinal space. This will create an additional straight section for an insertion device (ID), thereby converting a bending magnet source point into and ID source point. Installation of the two new cells and recommissioning of the SR will take place in an eight week shutdown. The additional components in the two new cells necessitate a substantial reworking of the interface layer of control system, together with changes to all applications dependent on the physics parameters of the storage ring. This paper will describe how it is planned to manage the control system aspects of the project.
Presented on behalf of the DDBA control and instrumentation team.