Control System Upgrades
Paper Title Page
Designing Control Systems for Change: Supporting a Facility's Science and Technology Evolution  
  • S.M. Hartman
    ORNL, Oak Ridge, Tennessee, USA
  Funding: ORNL is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U. S. Department of Energy.
A control system designed for today's large experimental physics projects is likely to be in operation for decades. Over the lifetime of a facility, computer hardware technologies will change, custom electronics designs will face obsolescence, and software and computing technologies will evolve. The control system must be designed to work from the onset of operations, while also adapting to changes in technology, requirements and science priorities. Using the ongoing upgrade of the Spallation Neutron Source beam line controls and data acquisition systems as a case study, this paper will offer lessons learned for future control system designs.
slides icon Slides MOM303 [5.552 MB]  
poster icon Poster MOM303 [28.784 MB]  
MOPGF001 Use Interrupt Driven Mode to Redesign an IOC for Digital Power Supply at SSC-LINAC 1
  • S. An, K. Gu, X.J. Liu, J.Q. Wu, W. Zhang
    IMP/CAS, Lanzhou, People's Republic of China
  SSC-LINAC control system is based on EPICS architecture. The sub control system of digital power supplies is a kind of IOC send and receive custom command via Ethernet and TCP/IP protocol. The old IOC is designed to use period scan mode IOC, and there are so many digital power supplies, that we can't make sure every connect condition of digital power supply is fine. IOC must wait a long time if one of them can't connect correctly and other digital power supply's PV may also be blocked. An IOC that uses interrupt driven mode to avoid the shortcoming was designed. This will be described in this paper.  
poster icon Poster MOPGF001 [0.853 MB]  
MOPGF002 Magnet Corrector Power Supply Controller for LCLS-I 1
  • S. Babel, B. Lam, K. Luchini, J.J. Olsen, T. Straumann, E. Williams, C. Yee
    SLAC, Menlo Park, California, USA
  The MCOR-12[Magnet Corrector] is a 16-channel modular architecture, precision magnet driver, capable of providing bipolar output currents in the range from 12A to +12A. A single, unregulated bulk power supply provides the main DC power for the entire crate. Currently the MCORs have a 1000ppm regulation on the B-field. The MCOR controller card upgrades, existing LCLS-I and future LCLS-II needed, controls for Magnet Corrector Power Supplies. The project shifts the existing functionality of the VME based DAC and SAM and an Allen Bradley PLC into a new slot-0 card residing in the MCOR chassis. Elimination of the VME crate and the PLC will free up rack space to be used in future. The new interface card has a long term stability of 100 ppm and monitors ground fault currents and various other interlocks for the MCOR power supplies. The controller can interface to EPICS Channel Access and Fast Feedback system at SLAC using two Gigabit Ethernet ports and has an FPGA based EVR for getting 'time stamps' from the Event Generator system at SLAC. The EPICS control system along with embedded diagnostic features will allow for enhanced remote control and monitoring of the power supplies.
*S. Babel, S. Cohen, "Digital Control Interface for Bipolar Corrector Power, BiRa Systems, Albuquerque **G.E. Leyh, "A Multi-Channel Corrector Magnet Controller"
poster icon Poster MOPGF002 [1.646 MB]  
MOPGF006 The Renovation of the CERN Controls Configuration Service 1
  • L. Burdzanowski, C. Roderick
    CERN, Geneva, Switzerland
  The Controls Configuration Service (CCS) is a key component in CERN's data driven accelerator Control System.  Based around a central database, the service also provides a range of client APIs and user interfaces - enabling configuration of controls for CERN's accelerator complex.  The service has existed for 35 years (29 based on Oracle DBMS). There has been substantial evolution of the CCS over time to cater for changing requirements and technology advances.  Inevitably this has led to increases in CCS complexity and an accumulation of technical debt.  These two aspects combined have a negative impact on the flexibility and maintainability of the CCS, leading to a potential bottleneck for Control System evolution.   This paper describes on-going renovation efforts (started mid-2014) to tackle the aforementioned issues, whilst ensuring overall system stability.  In particular, this paper covers architectural changes, the agile development process in place - bringing users close to the development cycle, and the deterministic approach used to treat technical debt.  Collectively these efforts are leading towards a successful renovation of a core element of the Control System.  
poster icon Poster MOPGF006 [4.508 MB]  
MOPGF014 LLRF Controls Upgrade for the LCLS XTCAV project at SLAC 1
  • S. Condamoor, Y. Ding, P. Krejcik, H. Loos, T.J. Maxwell, J.J. Olsen
    SLAC, Menlo Park, California, USA
  Funding: This work was performed in support of the LCLS project at SLAC. Work supported by the U.S. Department of Energy under contract number DE-AC02-76SF00515.
SLAC's Low Level Radio Frequency (LLRF) controls software for the S-Band deflecting structures needed to be upgraded significantly when a new X-Band transverse deflecting cavity (XTCAV) was installed downstream of the LCLS undulators in Spring 2013 to assist in FEL diagnostics such as characterizing the temporal profile of X-ray pulses that vary shot-to-shot. The unique location of the XTCAV in the beamline posed several challenges. A new design of the Modulator and Klystron control Support Unit (MKSU-II) for interlocking was added at the XTCAV controls station that required new software development. The timing setup was also different from the rest of the Linac. This paper outlines the LLRF controls layout for the XTCAV and discusses the manner in which the challenges were addressed. XTCAV has now become a successful tool for gathering data that enables reconstruction of X-ray FEL power profiles with greater resolution.
SLAC Publication Number: SLAC-PUB-16414
poster icon Poster MOPGF014 [3.646 MB]  
MOPGF015 Fast Wire Scanner Upgrade for LCLS 1
  • J.M. D'Ewart, M.L. Campell, P. Krejcik, H. Loos, K. Luchini
    SLAC, Menlo Park, California, USA
  Wire scanners are a main diagnostic tool for transverse beam size and emittance measurements at LCLS. The original SLAC wire scanners were not optimized for speed (taking minutes to scan), and can't perform at the desired level of position resolution necessary for measuring LCLS' small beam size. A new fast wire scanner, based on a dc linear servo motor, has been designed and installed in the LCLS. The new fast wire scanner has several advantages over the original wire scanner: scan times are reduced from minutes to seconds while minimizing wire vibrations. Rather than counting open-loop step pulses, the new fast wire scanner uses real time position capture for beam synchronous sampling of the wire position, enhancing beam profile accuracy.  
MOPGF016 Improving the Compact Muon Solenoid Electromagnetic Calorimeter Control and Safety Systems for the Large Hadron Collider Run 2 1
  • D.R.S. Di Calafiori, G. Dissertori, L. Djambazov, O. Holme, W. Lustermann
    ETH, Zurich, Switzerland
  • P. Adzic, P. Cirkovic, D. Jovanovic
    VINCA, Belgrade, Serbia
  • S. Zelepoukine
    UW-Madison/PD, Madison, Wisconsin, USA
  Funding: Swiss National Science Foundation (SNSF); Ministry of Education, Science and Technological Development of Serbia
The first long shutdown of the Large Hadron Collider (LS1, 2013-2015) provided an opportunity for significant upgrades of the detector control and safety systems of the CMS Electromagnetic Calorimeter. A thorough evaluation was undertaken, building upon experience acquired during several years of detector operations. Substantial improvements were made to the monitoring systems in order to extend readout ranges and provide improved monitoring precision and data reliability. Additional remotely controlled hardware devices and automatic software routines were implemented to optimize the detector recovery time in the case of failures. The safety system was prepared in order to guarantee full support for both commercial off-the-shelf and custom hardware components throughout the next accelerator running period. The software applications were modified to operate on redundant host servers, to fulfil new requirements of the experiment. User interface extensions were also added to provide a more complete overview of the control system. This paper summarises the motivation, implementation and validation of the major improvements made to the hardware and software components during the LS1 and the early data-taking period of LHC Run 2.
poster icon Poster MOPGF016 [2.392 MB]  
Automated Steering System for 50.5 MeV Proton Beam in Neutron Treatment Facility  
  • R.C. Emery
    University of Washington Medical Center, Seattle, Washington, USA
  The University of Washington Clinical Cyclotron (UWCC) is a Scanditronix MC-50 compact cyclotron installed in 1983 that has been in continual use for the last 32 years. Its primary purpose is to produce a neutron beam (p(50.5 MeV)+Be) for fast neutron therapy. An automated system is required to maintain the proton beam centered and evenly distributed on the Be target located in the rotating gantry head. The upgrade of this system followed the general design philosophy of using open source software, open/industry standard communication protocols, and readily available/off the shelf hardware. The new system was developed using the EPICS control toolkit running on Debian Linux PCs. Ethernet is used as the fieldbus, Acromag devices running Modbus/Ethernet protocol for analog input, and Kikusui PBZ bipolar power supplies with built in function generators running vxi-11/Ethernet protocol to drive the magnet coils. The new beam steering system has been successfully integrated into the accelerator control system and is fully operational.  
poster icon Poster MOPGF018 [2.645 MB]  
MOPGF019 Experiences and Lessons Learned in Transitioning Beamline Front-Ends from VMEbus to Modular Distributed I/O 1
  • I.J. Gillingham, T. Friedrich, S.C. Lay, R. Mercado
    DLS, Oxfordshire, United Kingdom
  Historically Diamond's photon front-ends have adopted control systems based on the VMEbus platform. With increasing pressure towards improved system versatility, space constraints and the issues of long term support for the VME platform, a programme of migration to distributed remote I/O control systems was undertaken. This paper reports on the design strategies, benefits and issues addressed since the new design has been operational.  
poster icon Poster MOPGF019 [0.369 MB]  
MOPGF021 Database Archiving System for Supervision Systems at CERN: a Successful Upgrade Story 1
  • P. Golonka, M. Gonzalez-Berges, J. Hofer, A. Voitier
    CERN, Geneva, Switzerland
  Almost 200 controls applications, in domains like LHC magnet protection, cryogenics and vacuum systems, cooling-and-ventilation or electrical network supervision, have been developed and are currently maintained by the CERN Industrial Controls Group in close collaboration with several equipment groups. The supervision layer of these systems is based on the same technologies as 400 other systems running in the LHC Experiments (e.g. WinCC Open Architecture, Oracle). During the last two-year LHC Long Shutdown 1, the 200 systems have been successfully migrated from a file-based archiver to a centralized infrastructure based on Oracle databases. This migration has homogenized the archiving chain for all CERN systems, and at the same time has presented a number of additional challenges. The paper presents the design, the necessary optimizations and the migration process that allowed us to meet unprecedented data-archiving rates (unachievable for the previously used system), and liaise with the existing long-term storage system (LHC LoggingDB) to assure data-continuity.  
poster icon Poster MOPGF021 [3.505 MB]  
MOPGF022 SIS18 Upgrade: The FAIR Compliant Renovation of the Data Acquisition System for Particle Detectors 1
  • R. Haseitl, H. Bräuning, T. Hoffmann, K. Lang, T. Milosic
    GSI, Darmstadt, Germany
  In preparation of FAIR, several well-established beam instrumentation systems of the GSI heavy-ion synchrotron SIS18 and its connected high-energy beam transfer lines (HEBT) have to be modernized. In this contribution, the data acquisition upgrade of particle detectors such as ion chambers and plastic scintillators is described. This covers the replacement of an outdated custom-built readout- and control hardware by modern FMC (FPGA mezzanine card) based I/O hardware, new multi-channel high voltage power supplies and a new data acquisition system (DAQ) for the VME based scalers. The latter will replace the old Kylix-based ABLASS software by LASSIE (Large Analog Signal and Scaling Information Environment) to fit into the new FAIR control system concept. LASSIE is based on FESA (Front End Software Architecture). FESA was originally developed by CERN and enhanced by GSI-specific modifications. Furthermore, the new particle detector DAQ will be able to take full advantage of the new FAIR timing system which is based on the White Rabbit protocol.  
poster icon Poster MOPGF022 [1.194 MB]  
MOPGF023 Update of Power Supply Control System at the SAGA Light Source Storage Ring 1
  • Y. Iwasaki, T. Kaneyasu, S. Koda, Y. Takabayashi
    SAGA, Tosu, Japan
  The update of control system at the SAGA Light Source storage ring power supplies is in progress for improving the ramp-up speed (from 255 MeV to 1.4 GeV) and for easily changing the stored beam energy. By replacing the CPU unit of PLC used for control of the power supplies, the ramp-up time was reduced from 4 to 2 minutes in a test bench prepared for the upgrade system. Currently the allowable beam energy is restricted to some fixed values in the ramp-up operation due to the original specification of the PLC ladder program. To operate storage ring at an arbitrary energy, the algorism used in the PLC program has been improvement. Energy dependent measurements (betatron-tune, beam size, and beam half-lifetime) will be carried out by using the updated control system. The upper layer of the control system using the National Instrument LabVIEW and ActiveXCA was also reconstructed for flexible GUI.  
poster icon Poster MOPGF023 [3.785 MB]  
MOPGF024 Testing Framework for the LHC Beam-based Feedback System 1
  • S. Jackson, D. Alves, L. Di Giulio, K. Fuchsberger, B. Kolad, E. Pedersen
    CERN, Geneva, Switzerland
  During the first LHC shut-down period, software for the LHC Beam-based Feedback Controller (BFC) and Service Unit (BFSU) was migrated to new 64-bit multi-core hardware and to a new version of CERN's FESA3 real-time framework. This coincided with the transfer of responsibility to a new software team, charged with readying the systems for beam in 2015 as well as maintaining and improving the code-base in the future. In order to facilitate the comprehension of the system's 90'000+ existing lines of code, a new testing framework was developed which would not only serve to define the system's functional specification, but also provide acceptance tests for future releases. This paper presents how the BFC and BFSU systems were decoupled from each other as well as from the LHC plant's measurement and correction systems, thus allowing simulation-data driven instances to be deployed in a test environment. It also describes the resulting Java-based domain-specific language (DSL) which, when employed in JUnit, allows the formation of repeatable acceptance tests.  
MOPGF025 Enhancing the Detector Control System of the CMS Experiment with Object Oriented Modelling 1
  • R.J. Jiménez Estupiñán, A. Andronidis, O. Chaze, C. Deldicque, M. Dobson, A.D. Dupont, D. Gigi, F. Glege, J. Hegeman, M. Janulis, L. Masetti, F. Meijers, E. Meschi, S. Morovic, C. Nunez-Barranco-Fernandez, L. Orsini, A. Petrucci, A. Racz, P. Roberts, H. Sakulin, C. Schwick, B. Stieger, S. Zaza, P. Zejdl
    CERN, Geneva, Switzerland
  • J.M. Andre, R.K. Mommsen, V. O'Dell, P. Zejdl
    Fermilab, Batavia, Illinois, USA
  • U. Behrens
    DESY, Hamburg, Germany
  • J. Branson, S. Cittolin, A. Holzner, M. Pieri
    UCSD, La Jolla, California, USA
  • G.L. Darlea, G. Gomez-Ceballos, C. Paus, K. Sumorok, J. Veverka
    MIT, Cambridge, Massachusetts, USA
  • S. Erhan
    UCLA, Los Angeles, California, USA
  • O. Holme
    ETH, Zurich, Switzerland
  WinCC Open Architecture (WinCC OA) is used at CERN as the solution for many control system developments. This product models the process variables in structures known as data points and offers a custom procedural scripting language, called Control Language (CTRL). CTRL is also the language to program functionality of the native user interfaces (UI) and is used by the WinCC OA based CERN control system frameworks. CTRL does not support object oriented (OO) modeling by default. A lower level OO application programming interface (API) is provided, but requires significantly more expertise and development effort than CTRL. The Detector Control System group of the CMS experiment has developed CMSfwClass, a programming toolkit which adds OO behavior to the data points and CTRL. CMSfwClass reduces the semantic gap between high level software design and the application domain. It increases maintainability, encapsulation, reusability and abstraction. This paper presents the details of the implementation as well as the benefits and use cases of CMSfwClass.  
poster icon Poster MOPGF025 [1.436 MB]  
MOPGF026 Laser Beam Profiling and Further Improvements to the FHI FEL 1
  • H. Junkes, W. Schöllkopf, M. Wesemann
    FHI, Berlin, Germany
  A mid-infrared FEL has been established at the Fritz-Haber-Institut in Berlin. It is used for spectroscopic investigations of molecules, clusters, nanoparticles and surfaces. The oscillator FEL is operated with 15 - 50 MeV electrons from a normal-conducting S-band linac equipped with a gridded thermionic gun and a chicane for controlled bunch compression. The EPICS software framework was choosen to build the control system for this facility. In an effort to support the various experimenters two different Laser Beam Profiling cameras have been integrated. Here, the areadetector framework with genicam integration is used. The control system was also expanded with fast digitizers (SIS3316) but connected via Ethernet instead of using a VMEbus crate controller to get a higher flexibility. A iPad app for monitoring completes the enhancement. This paper presents design and implementation aspects of the upgrade, its capabilities, and lessons learned during the development.  
poster icon Poster MOPGF026 [15.827 MB]  
MOPGF027 Real-Time EtherCAT Driver for EPICS and Embedded Linux at Paul Scherrer Institute (PSI) 1
  • D. Maier-Manojlovic
    PSI, Villigen, Villigen, Switzerland
  EtherCAT bus and interface are widely used for external module and device control in accelerator environments at PSI, ranging from undulator communication, over basic I/O control to Machine Protection System for the new SwissFEL accelerator. A new combined EPICS/Linux driver has been developed at PSI, to allow for simple and mostly automatic setup of various EtherCAT configurations. The new driver is capable of automatic scanning of the existing device and module layout, followed by self-configuration and finally autonomous operation of the EtherCAT bus real-time loop. If additional configuration is needed, the driver offers both user- and kernel-space APIs, as well as the command line interface for fast configuration or reading/writing the module entries. The EtherCAT modules and their data objects (entries) are completely exposed by the driver, with each entry corresponding to a virtual file in the Linux procfs file system. This way, any user application can read or write the EtherCAT entries in a simple manner, even without using any of the supplied APIs. Finally, the driver offers EPICS interface with automatic template generation from the scanned EtherCAT configuration.  
poster icon Poster MOPGF027 [30.572 MB]  
Upgrade to the Control System Based on EPICS for the Beam Transport in SPES Project  
  • M. Montis, G. Bassato, M.G. Giacchini
    INFN/LNL, Legnaro (PD), Italy
  • M.A. Bellato
    INFN- Sez. di Padova, Padova, Italy
  Beam diagnostics and magnet control systems of ALPI-PIAVE accelerators* have been recently upgraded by migrating the control software from a custom solution to EPICS(**,***). While for the diagnostics hardware, based on VME solution, has been left unchanged to reduce the upgrade costs and software has been rewritten from the scratch, the new magnet system has been totally re-implemented using new low cost embedded hardware equipped with custom Linux and EPICS framework. Particular attention has been paid for the Human-Machine Interface realized with Control System Studio framework in order to satisfy the end user requirements from the "look and feel" point of view and, at the same time, exploit all the featured provided from a distributed control system framework like EPICS.
MOPGF029 Personnel Protection System Upgrade for the LCLS Electron Beam Linac 1
  • C. Cyterski, E.P. Chin
    SLAC, Menlo Park, California, USA
  As facilities age and evolve, constant effort is needed in upgrading control system infrastructure; this applies to all aspects of an accelerator facility. Portions of the Personnel Protection System of the Linac Coherent Light Source are still relying on a legacy, relay-based Safety System. An upgrade is underway to modernize these systems using Siemens S7-300 Safety PLCs and Pilz PNOZMulti programmable controllers. The upgrade will be rolled out over multiple years requiring the implementation to be fully compatible with adjacent legacy system while setting the foundation for the new generation system. The solution relies on a modularized safety system which can be deployed in a short time (1 month) while being flexible enough to adapt to the evolving needs over the next 20 years.  
poster icon Poster MOPGF029 [0.274 MB]  
MOPGF030 Upgrade of the Control and Interlock Systems for the Magnet Power Supplies in T2K Primary Beamline 1
  • K. Nakayoshi, Y. Fujii, K. Sakashita
    KEK, Tsukuba, Japan
  T2K is a long-baseline neutrino oscillation experiment at J-PARC in Japan. High intensity neutrino/antineutrino beam is generated and propagates 295km to Super-Kamiokande. High intensity proton beam, 350 kW in May 2015, is extracted from Main Ring synchrotron, guided through a primary proton beamline to a graphite target using normal-conducting (NC) magnets and super-conducting combined-function magnets. In October 2014, we replaced all the power supplies (PSs) for NC magnets with newly developed PSs. We also developed new control system based on EPICS and PLCs, putting emphasis on the safe operation of power supplies, and integrated it into the existing interlock system. Consequently the latency time for the interlock system was improved. We report the actual implementation and operation results of these developments.  
MOPGF032 Installation of a Hot-Swappable Spare Injector Laser System for the SLAC Linac Coherent Light Source 1
  • S.C. Alverson, G.W. Brown, F.-J. Decker, S. Gilevich, S. Vetter
    SLAC, Menlo Park, California, USA
  LCLS is a facility for generation of very short duration, highly intense x-ray pulses which requires an extremely reliable photocathode electron source. In order to maintain high up-time (>95%) for the experimenters, operations rely on a maintenance program for active laser components as well as on built-in redundancy in case of failure. To accomplish this, a duplicate laser system was installed, allowing for quick swap between the active system and the spare in the event of a malfunction or for planned maintenance. As an added bonus, this redundant system provides additional possibilities for science as both laser systems can also be run to the cathode simultaneously to create multiple particle bunches. Diagnostics were put in place to maintain both special and temporal overlap and allow for the fast switching between systems by operations personnel while still remaining within the safety envelope. This was done for both the primary UV drive laser as well as the secondary IR "heater" laser. This paper describes the installation challenges and design architecture for this backup laser system.  
poster icon Poster MOPGF032 [1.773 MB]  
MOPGF033 New Developments on EPICS Drivers, Clients and Tools at SESAME 1
  • I. Saleh, Y.S. Dabain, A. Ismail
    SESAME, Allan, Jordan
  SESAME is a 2.5 GeV synchrotron light source under construction in Allan, Jordan. The control system of SESAME is based on EPICS and CSS. Various developments in EPICS drivers, clients, software tools and hardware have been done. This paper will present some of the main achievements: new linux-x86 EPICS drivers and soft IOCS developed for the Micro-Research Finland event timing system replacing the VME/VxWorks-based drivers; new EPICS drivers and clients developed for the Basler GigE cameras; an IOC deployment and management driver developed to monitor the numerous virtual machines running the soft IOCs, and to ease deployment of updates to these IOCs; an automated EPICS checking tool developed to aid in the review, validation and application of the in-house rules for all record databases; a new EPICS record type (mbbi2) developed to provide alarm features missing from the multibit binary records found in the base distribution of EPICS; and a test of feasibility for replacing serial terminal servers with low-cost computers.  
poster icon Poster MOPGF033 [0.954 MB]  
Development of BPM Readout System Software for SuperKEKB Injector Linac  
  • M. Satoh, K. Furukawa, F. Miyahara, Y. Seimiya, T. Suwada
    KEK, Ibaraki, Japan
  • T. Kudou, S. Kusano
    Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
  • H.S. Saotome, M. Takagi
    Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
  Toward SuperKEKB project, the injector linac upgrade is ongoing for aiming at the stable beam operation with low emittance and high intensity bunch charge. One of the key challenges is a low emittance preservation of electron beam because the vertical emittance of 20 mm.mrad or less should be transported to the main ring without a damping ring. For this purpose, the fine alignment of accelerator components is a crucial issue since the linac alignment was badly damaged by the big earthquake in 2011. From the simulation results of emittance growth, the alignment of the quadrupole magnets and accelerating structures should be conducted at the level of 300 um in rms along the 600-m-long linac. In addition, we are aiming at the level of 100 um alignment in rms within the short range distance of 100 m long. Even after the fine component alignment can be achieved, the fine beam orbit manipulation is necessary for low emittance preservation. For these reasons, a new BPM readout system based on VME64x, was developed. The new system has improved the precision of beam position measurement up to 3 um from 25 um. In this paper the software development of the new BPM readout system is described.  
poster icon Poster MOPGF034 [0.946 MB]  
MOPGF035 Control System Status of SuperKEKB Injector Linac 1
  • M. Satoh, K. Furukawa, K. Mikawa, F. Miyahara, Y. Seimiya, T. Suwada
    KEK, Ibaraki, Japan
  • K. Hisazumi, T. Ichikawa, T. Kudou, S. Kusano, Y. Mizukawa
    Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
  • H.S. Saotome, M. Takagi
    Kanto Information Service (KIS), Accelerator Group, Ibaraki, Japan
  Toward SuperKEKB project, the injector linac upgrade is ongoing for aiming at the stable electron/positron beam operation with low emittance and high intensity bunch charge. To obtain such high quality beam, we have being commissioning many newly developed subsystems including a low emittance photocathode rf gun since October of 2013. Eventually, we will perform the simultaneous top-up for the four independent storage rings including two light sources. The stable beam operation as long as possible is desired since the prospective physics results strongly depends on the reliability and availability of accelerator operation. Since the middle stage of KEKB project, the injector linac control system has been gradually transferred to the EPICS based one from the in-house system based on RPC. We are expanding the existing control system for the newly installed devices like a network attached power supply, timing jitter monitoring system, and so on. In addition, many commissioning tools are now under development to accelerate the high quality beam development. In this paper, we will describe the present status of injector linac control system and future plan in detail.  
poster icon Poster MOPGF035 [1.139 MB]  
MOPGF036 Control System Developments at the Electron Storage Ring DELTA 1
  • D. Schirmer, A. Althaus, F.H. Bahnsen
    DELTA, Dortmund, Germany
  Increasing demands, mandatory replacement of obsolete controls equipment as well as the introduction of new soft- and hardware technologies with short innovation cycles are some of the reasons why control systems need to be revised continuously. Thus, also at the EPICS-based DELTA control system, several projects have been tackled in recent years: (1) Embedding the new CHG-based short-pulse facility for VUV and THz radiation required, for example, the integration of IP-cameras, Raspberry-Pi PCs and EtherCat/TwinCat wired I/O-devices. (2) The request for a staff-free control room led to the programming of new web applications using Python and the Django framework. This development resulted in a web-based interlock system that can be run, amongst others, on Android-based mobile devices. (3) The virtualization infrastructure for server consolidation has been extended and migrated from XEN to the kernel based KVM approach. (4) I/O-units which were connected via conventional fieldbus systems (CAN, GPIB, RS-232/485), are now gradually replaced by TCP/IP-controlled devices. This paper describes details of these upgrades and further new developments.  
poster icon Poster MOPGF036 [1.158 MB]  
MOPGF037 Upgrades to Control Room Knobs at Slac National Accelerator Laboratory 1
  • S. L. Hoobler, S.C. Alverson, C. Cyterski, R.C. Sass
    SLAC, Menlo Park, California, USA
  For years, accelerator operators at the SLAC National Accelerator Laboratory (SLAC) have favored hardware knobs in the control room for accelerator tuning. Hardware knobs provide a tactile, intuitive, and efficient means of adjusting devices. The evolution of separate control systems for different accelerator facilities at SLAC has resulted in multiple flavors of knob hardware and software. To improve efficiency, space usage, and ease of use, the knob systems have been upgraded and integrated.  
poster icon Poster MOPGF037 [0.740 MB]  
MOPGF038 Design and Commissioning Results of MicroTCA Stripline BPM System 1
  • S. L. Hoobler, R.S. Larsen, H. Loos, J.J. Olsen, S.R. Smith, T. Straumann, C. Xu, A. Young
    SLAC, Menlo Park, California, USA
  The Linac Coherent Light Source (LCLS) is a free electron laser (FEL) facility operating at the SLAC National Accelerator Laboratory (SLAC). A stripline beam position monitor (BPM) system was developed at SLAC [1] to meet the performance requirements necessary to provide high-quality stable beams for LCLS. This design has been modified to achieve improved position resolution in a more compact form factor. Prototype installations of this system have been operating in the LCLS LINAC and tested at the Pohang Accelerator Laboratory (PAL). Production systems are deployed at the new PAL XFEL facility and at the SPEAR storage ring at the Stanford Synchrotron Radiation Lightsource at SLAC. This paper presents the design and commissioning results of this system.  
poster icon Poster MOPGF038 [0.809 MB]  
MOPGF040 Keck Telescope Control System Upgrade 1
  • K.T. Tsubota, J.A. Mader
    W.M. Keck Observatory, Kamuela,, Hawaii, USA
  The Keck telescopes, located at one of the world's premier sites for astronomy, were the first of a new generation of very large ground-based optical/infrared telescopes with the first Keck telescope beginning science operations in May of 1993, and the second in October of 1996. The components of the telescopes and control systems are more than 15 years old. The upgrade to the control systems of the telescopes consists of mechanical, electrical, software and network components with the overall goals of improving performance, increasing reliability, addressing serious obsolescence issues and providing a knowledge refresh. This paper is a continuation of one published at the 2013 conference and will describe the current status of the control systems upgrade. It will detail the implementation and testing for the Keck II telescope, including successes and challenges met to date. Transitioning to nighttime operations will be discussed, as will implementation on the Keck I telescope.  
poster icon Poster MOPGF040 [3.444 MB]  
MOPGF042 EPICS IOC Based on Computer-On-Module for the LNL Laboratory 1
  • J.A. Vásquez, D. Pedretti, R. Ponchia
    INFN/LNL, Legnaro (PD), Italy
  • M.A. Bellato, R. Isocrate
    INFN- Sez. di Padova, Padova, Italy
  • M. Bertocco
    UNIPD, Padova (PD), Italy
  At LNL it is being carried out an upgrade campaign of the control systems of the accelerator complex. The two main goals are standardization of hardware and software and system interoperability. EPICS has been chosen as the standard framework for developing new control systems; this will address software standardization and system interoperability. In order to achieve hardware standardization, a new EPICS IOC is under development, which will become a basic construction block for all future control systems. The COM (Computer-on-Modules) from factor has been chosen as the hardware platform for the IOC, along with the peripheral devices needed for developing all the foreseen control system at LNL. Prototypes of this IOC has been developed using ADLINK's Type 6 COM Express modules on generic carrier boards with DIO, ADC and DAC expansion boards. These prototypes have been tested under typical applications at LNL in order to validate the hardware platform choice. Experimental results show that the performance of the IOC in terms of effective resolution (ENOB and bias error), sample rates and CPU usage is suitable for satisfying the requirements of the control systems.  
poster icon Poster MOPGF042 [1.904 MB]  
MOPGF047 Revolution Project: Progress in the Evolution of Soleil Motion Control Model* 1
  • S.Z. Zhang, Y.-M. Abiven, F. Blache, D. Corruble, C.K. Kheffafa
    SOLEIL, Gif-sur-Yvette, France
  • S.M. Minolli
  SOLEIL is a third generation synchrotron radiation source located near Paris in France. REVOLUTION (REconsider Various contrOLler for yoUr motion) is the motion controller upgrade project currently in progress at SOLEIL. It was initiated to maintain the facility operations by addressing the risk of hardware obsolescence in motion control but at the same time making room for complex applications requirements to face new high performance challenges. In order to achieve these considerations, SOLEIL's strategy move was to go from a single controller for all applications to two motion controllers. A first Controller GALIL DMC-4183 was chosen to succeed the previous version DMC-2182. Both controllers can be integrated in the existing architecture with little hardware and software adaptation enabling full compatibility with the existing architecture. A second controller, Delta Tau Power Brick, has been selected as a HIGH PERFORMANCE solution providing advanced functionality. The CLASSIC controller upgrade is about to be completed and the integration of Power Brick into the SOLEIL control system is ongoing. The system complexity is abstracted by embedding processing functions into low-level code and giving end-users a simple high-level interface. The work done to structure the interfacing and standardization of the controller are detailed in this paper.
*Work also supported by XT.Tran, M.Cerato, G.Renaud, E.Fonda and SAMBA Beamline staff, Delta Tau Ldt., IMO JEAMBRUN AUTOMATION, Observatory-Sciences Ldt…
poster icon Poster MOPGF047 [1.818 MB]  
Beam Property Management at KEK Electron/Positron 7-GeV Injector Linac  
  • K. Furukawa, N. Iida, T. Kamitani, S. Kazama, T. Miura, F. Miyahara, Y. Ohnishi, M. Satoh, T. Suwada, K. Yokoyama
    KEK, Ibaraki, Japan
  The electron/positron injector linac at KEK has injected a variety of beams into the electron accelerator complex of SuperKEKB collider and light sources for particle physics and photon science experiments for more than 30 years. The beam property of electrons and positrons varies in energy from 2.5 GeV to 7 GeV and in bunch charge from 0.2 nC to 10 nC, and their stability requirements are different depending on the injected storage ring. They have to be switched by pulse-to-pulse modulation at 50 Hz. The emittance control is especially crucial to achieve the goal at SuperKEKB and is under development. The beam energy management becomes more important as it affects all of the beam properties. Beam acceleration provided by 60 RF power station should be properly distributed considering redundancy and stability. Thus, the equipment controls are also restructured in order to enable the precise control of the beam properties, based on the synchronized event control system and EPICS control system. The strategy and status of the upgrade is described in this paper from the practical aspects of device controls, online simulation and operation.  
THHC2O02 Component Database for APS Upgrade 1
  • S. Veseli, N.D. Arnold, J. Carwardine, G. Decker, D.P. Jarosz, N. Schwarz
    ANL, Argonne, Ilinois, USA
  The Advanced Photon Source Upgrade (APS-U) project will replace the existing APS storage ring with a multi-bend achromat (MBA) lattice to provide extreme transverse coherence and extreme brightness x-rays to its users. As the time to replace the existing storage ring accelerator is of critical concern, an aggressive one-year removal/installation/testing period is being planned. To aid in the management of the thousands of components to be installed in such a short time, the Component Database (CDB) application is being developed with the purpose to identify, document, track, locate, and organize components in a central database. Three major domains are being addressed: Component definitions (which together make up an exhaustive "Component Catalog"), Designs (groupings of components to create subsystems), and Component Instances ('Inventory'). Relationships between the major domains offer additional "system knowledge" to be captured that will be leveraged with future tools and applications. It is imperative to provide sub-system engineers with a functional application early in the machine design cycle. Topics discussed in this paper include the initial design and deployment of CDB, as well as future development plans.  
slides icon Slides THHC2O02 [1.953 MB]  
THHC2O03 Replacing the Engine in Your Car While You Are Still Driving It 1
  • E. Björklund
    LANL, Los Alamos, New Mexico, USA
  Funding: US Department of Energy under contract DC-AC52-06NA25396.
Replacing your accelerator's timing system with a completely different architecture is not something that happens very often. Perhaps even rarer is the requirement that the replacement not interfere with the accelerator's normal operational cycle. In 2014, The Los Alamos Neutron Science Center (LANSCE) began the first phase of a multi-year rolling upgrade project which will eventually result in the complete replacement of the low-level RF system, the timing system, the industrial I/O system, the beam-synchronized data acquisition system, the fast-protect reporting system, and much of the diagnostic equipment. These projects are mostly independent of each other, with their own installation schedules, priorities, and time-lines. All of them, however, must interface with the timing system. This paper will focus on the timing system replacement project, its conversion from a centralized discrete signal distribution system to a more distributed event-driven system, and the challenges faced by having to interface with both the old and new equipment until the upgrade is completed.
slides icon Slides THHC2O03 [2.341 MB]