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proton

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MOAA01 Accelerators: The Final Frontier? collider, factory, electron, linac 1
 
  • K. J. Peach
    JAI, Oxford
  Particle accelerators at the high-energy frontier are essential to the exploration of the deep structure of the material universe around us. The new technologies required to achieve the highest energies also find application in other fields of science. The lecture will discuss the scientic motivation for the development of these new accelerator technologies and the applications that might result.  
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TOAB01 The New FAIR Accelerator Complex at GSI: Project, Controls Challenges, and First Steps controls, antiproton, ion, storage-ring 59
 
  • U. Krause, W. Panschow, V. R.W. Schaa, W. Schiebel, P. Schuett, R. Baer
    GSI, Darmstadt
  An international Facility for Antiproton and Ion Research (FAIR) was proposed by GSI in 2001 and is currently under development. This new accelerator complex will be a significant extension to the existing GSI accelerator chain and will provide a range of particle beams from protons and antiprotons to ion beams of all elements up to uranium, as well as secondary beams of short-lived rare isotope beams. The central parts of the FAIR facility are a superconducting double-ring synchrotron and a system of storage rings. This presentation covers the status and scope of the FAIR project and its technical and organizational challenges, in particular in respect to the accelerator control system. As many parts of the new FAIR facility will be independently developed as in-kind contributions by international FAIR partner institutes, one significant point is integration and interface management. Among many other aspects, one important technical consideration is a high degree of parallel beam operation for the different research programs that imposes ambitious demands on the timing and cycle management system. We will discuss first steps towards a new FAIR control system.  
 
TOAB02 Current Status of the Control System for J-PARC Accelerator Complex linac, controls, beam-losses, simulation 62
 
  • M. Adachi, S. F. Fukuta, S. H. Hatakeyama, M. T. Tanaka
    MELCO SC, Tsukuba
  • A. Akiyama, N. Kamikubota, T. Katoh, K. Kudo, T. Matsumoto, H. Nakagawa, J.-I. Odagiri, Y. Takeuchi, N. Yamamoto
    KEK, Ibaraki
  • H. Ikeda, T. Suzuki, N. T. Tsuchiya
    JAEA, Ibaraki-ken
  • Y. I. Itoh, Y. Kato, M. Kawase, H. Sakaki, H. Sako, G. B. Shen, H. Takahashi
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken
  • S. Motohashi, M. Takagi, S. Y. Yoshida
    Kanto Information Service (KIS), Accelerator Group, Ibaraki
  • S. S. Sawa
    Total Support Systems Corporation, Tokai-mura, Naka-gun, Ibaraki
  • M. S. Sugimoto
    Mitsubishi Electric Control Software Corp, Kobe
  • H. Yoshikawa
    KEK/JAEA, Ibaraki-Ken
  J-PARC accelerator complex consists of a proton linac (LINAC), > a Rapid Cycle Synchrotron (RCS), and a Main Ring synchrotron (MR). The commissioning of LINAC already started in November 2006, while the commissioning of Main Ring synchrotron (MR) is scheduled in May 2008. Most of the machine components of MR have been installed in the tunnel. Introduction of electronic modules and wiring will be made by the end of 2007. For the control of MR, the J-PARC accelerator control network was extended to include the MR related parts in March 2007. IOC computers (VME-bus computers) for MR will be introduced in 2007. In addition, more server computers for application development will be also introduced in 2007. This paper reports the status of development for the J-PARC MR control system.  
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TOPA02 SDA Time Intervals collider, controls, injection, emittance 79
 
  • J. Cai, E. S. McCrory, D. J. Nicklaus, T. B. Bolshakov
    Fermilab, Batavia, Illinois
  SDA (Sequenced Data Acquisition) Time Intervals is a hierarchical logging system for describing complex large-scale repeated processes. SDA has been used extensively at Fermilab* for fine tuning during the Tevatron Collider Run II. SDA Time Intervals is a new system born during discussions between CERN and FNAL about routinely recording relevant data for the LHC. Its main advantages are extremly low maintenance and good integration with traditional "flat" dataloggers. The Time Intervals (TI) system records the time of key events during a process and relates these events to the data that the traditional datalogger archives. From the point of view of the application program, any number of datalogging systems can be refactored into human-understandable time intervals.

* SDA-based diagnostic and analysis tools for Collider Run II. T.B. Bolshakov, P. Lebrun, S. Panacek, V. Papadimitriou, J. Slaughter, A. Xiao. Proceedings of PAC 05, Knoxville, Tennessee, May 2005.

 
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WPPA24 EPICS CA Enhancements for LANSCE Timed and Flavored Data controls, site, ion, diagnostics 365
 
  • J. O. Hill
    LANL, Los Alamos, New Mexico
  Currently the subscription update event queue in the EPICS server is capable of carrying event payloads consisting always of the channel’s value, time stamp, and alarm state. The complexity of the LANSCE macro pulse beam gates requires unique capabilities within the LANSCE control system - which is currently only partly based on an EPICS core. Upgrade designs specify a 100% EPICS based system, but this has evolved new requirements for enhanced capabilities within EPICS. Specifically, EPICS Channel Access (CA) clients need to dynamically specify the LANSCE macro pulse beam gate combinatorial (LANSCE Flavored Data), and the timing offsets (LANSCE Timed Data), to be viewed when they subscribe. EPICS upgrades in progress fulfilling these requirements, including generic software interfaces accommodating site specific event queue payloads and client specified subscription update filters, will be described.  
 
WPPA25 Remote Monitoring System for Current Transformers and Beam Position Monitors of PEFP diagnostics, rfq, controls, monitoring 368
 
  • Y.-S. Cho, H. S. Kim, H.-J. Kwon, Y.-G. Song, I.-S. Hong
    KAERI, Daejon
  • J. W. Lee
    PAL, Pohang, Kyungbuk
  PEFP(Proton Engineering Frontier Project) in Korean proton linear accelerator program has a diagnostic system with current transformers and beam position monitors. Prototype of current transformer(CT) and beam position monitor(BPPM) were made and tested successfully in tools of the beam diagnostic systems. We are preparing to monitor remotely signals from the diagnostic system. Remote monitoring system is based on VME system with EPICS environments. For fast digitizing the analog signals VME ADC Input Output Board (VTR812/10) are used to meet the various needs of beam diagnosis device. EPICS channel access and drivers have been programmed in VME CPU to operate the Input output controller(IOC) and interface operators. Operator console and data storage have been implemented with EDM and channel archiver as well.  
 
WPPB02 The LHC Central Timing Hardware Implementation controls, target 400
 
  • J. H. Lewis, J. Serrano, P. Alvarez
    CERN, Geneva
  The LHC central timing requirements are very different from those of the injector chain. Not only is machine's safety and reliability critical, but there are other important differences that have forced a new approach. Unlike the injector chain, the LHC processes cannot be usefully broken up into basic time periods and cycles; rather, they are independent, asynchronous, and of arbitrary duration. This paper presents the hardware and low-level software solutions we adopted and the technologies we used to implement them—in particular, the use of reflective memory, reliable use of the global positioning system as a precise time reference, redundancy, transmission-time calibration, safe beam parameter distribution, and the multitasking event generation hardware we developed to control the LHC machine processes.  
 
RPPA36 Handling Large Data Amounts in ALICE DCS controls, monitoring, power-supply, alignment 591
 
  • A. Augustinus, L. S. Jirden, S. Kapusta, P. Rosinsky, P. Ch. Chochula
    CERN, Geneva
  The amount of control data to be handled by the ALICE experiment at CERN is by a magnitude larger than in previous-generation experiments. Some 18 detectors, 130 subsystems, and 100,000 control channels need to be configured, controlled, and archived in normal operation. During the configuration phase several Gigabytes of data are written to devices, and during stable operations some 1,000 values per second are written to archival. The peak load for the archival is estimated to 150,000 changes/s. Data is also continuously exchanged with several external systems, and the system should be able to operate unattended and fully independent from any external resources. Much care has been taken in the design to fulfill the requirements, and this report will describe the solutions implemented. The data flow and the various components will be described as well as the data exchange mechanisms and the interfaces to the external systems. Some emphasis will also be given to data reduction and filtering mechanisms that have been implemented in order to keep the archive within maintainable margins.  
 
FOAA03 The CERN LHC Central Timing, a Vertical Slice controls, synchrotron, injection, target 711
 
  • P. Alvarez, J. C. Bau, S. Deghaye, I. Kozsar, J. Serrano, J. H. Lewis
    CERN, Geneva
  The design of the LHC central timing system depends strongly on the requirements for a Collider-type machine. The accelerators in the LHC injector chain cycle in sequences, each accelerator providing beam to the next as the energy increases. This has led to a timing system in which time is divided into cycles of differing characteristics. The LHC timing requirements are completely different, there are no cycles, and machine events are linked to machine processes such as injection, ramping, squeezing, physics, etc. These processes are modelled as event tables that can be played independently; the system must also provide facilities to send asynchronous events for punctual equipment synchronization and a real-time channel to broadcast machine information such as the beam type and its energy. This paper describes the implementation of the LHC timing system and also gives details on the synchronization in the LHC injector chain that manufactures various beams for LHC.  
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