Keyword: ion
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MOPGF091 White-Rabbit Based Revolution Frequency Program for the Longitudinal Beam Control of the CERN PS controls, proton, FPGA, injection 1
  • D. Perrelet, Y. Brischetto, H. Damerau, A.V. Villanueva
    CERN, Geneva, Switzerland
  • D. Oberson
    HEIA-FR, Fribourg, Switzerland
  • M.V. Sundal
    IST, Lisboa, Portugal
  The measured bending field of the CERN Proton Synchrotron (PS) is received in real-time by the longitudinal beam control system and converted into the revolution frequency used as set-point for beam phase and radial loops. With the renovation of the bending field measurement system the transmission technique is changed from a differential sequence of pulses, the so-called B-train, to a stream of Ethernet frames based on the White Rabbit protocol. The packets contain field, its derivative and auxiliary information. A new frequency program for the conversion of the bending field into the revolution frequency, depending also on parameters like radius of the accelerator and the particle type, has been developed. Instead of storing large conversion tables from field to frequency for fixed parameters, the frequencies are directly calculated in programmable logic (FPGA). In order to reduce development time and keep flexibility, the conversion is processed in real-time in the FPGA using Xilinx floating-point primitives mapped by a higher level tool Simulink System Generator. Commissioning with beam of the new frequency program in the PS is progressing.
Authors: D. Perrelet, Y. Brischetto, H. Damerau, D. Oberson, M. Sundal, A. Villanueva
poster icon Poster MOPGF091 [0.991 MB]  
MOPGF119 Design and Development of the ECR Ion Source Control System controls, vacuum, PLC, ion-source 1
  • H.J. Son, H. Jang, S. Lee, C.W. Son
    IBS, Daejeon, Republic of Korea
  Funding: This work is supported by the Rare Isotope Science Project funded by Ministry of Science, ICT and Future Planning(MSIP) and National Research Foundation(NRF) of Korea(Project No. 2011-0032011).
The Rare Isotope Science Project at the Institute for Basic Science constructs the rare isotope accelerator (RAON) facility in South Korea. The stable ion beam as an ion source for the RAON accelerator could be generated by ECR ion source system. Therefore, it is mandatory to build ECR ion source control system that could be integrated into an accelerator control system easily. The vacuum control system is an essential part of the ECR control system, because of one vacuum chamber among three different voltage stages (ground, 50 kV, and 80 kV). The preliminary design and implementation of vacuum control system for the ECR ion source will be discussed. It is planned to use a PLC in order to communicate with a vacuum gauge and turbo pump controllers among multi-voltage stages (ground, 50 kV and 80 kV) by optical fibers connection. The PLC system has two major components: a digital I/O module that provides power to each component and standard RS-232 modules which are connected with the gauge & pump controllers. In addition, its extension plan to integrate the vacuum control system into the RAON accelerator control system based on system the EPICS framework, will be discussed.
poster icon Poster MOPGF119 [3.106 MB]  
MOPGF129 Understanding the Failure Characteristics of the Beam Permit System of RHIC at BNL simulation, collider, kicker, controls 1
  • P. Chitnis, T.G. Robertazzi
    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 RHIC Beam Permit System (BPS) monitors the anomalies occurring in the collider and restores the machine to a safe state upon fault detection. The reliability of the BPS thus directly impacts RHIC availability. An analytical multistate reliability model of the BPS has been developed to understand the failure development and propagation over store length variation. BPS has a modular structure. The individual modules have joint survival distributions defined by competing risks with exponential lifetimes. Modules differ in functionality and input response. The overall complex behavior of the system is analyzed by first principles for different failure/success states of the system. The model structure changes according to the type of scenario. The analytical model yields the marginal survival distribution for each scenario versus different store lengths. Analysis of structural importance and interdependencies of modules is also examined. A former Monte Carlo model* is used for the verification of the analytical model for a certain store length. This work is next step towards building knowledge base for eRHIC design by understanding finer failure characteristics of the BPS.
*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. ICALEPCS'13, San Francisco, CA.
poster icon Poster MOPGF129 [1.326 MB]  
MOPGF146 Safety Interlock System for a Proton Linac Accelerator controls, rfq, ion-source, power-supply 1
  • Y. Zhao, Y.Y. Du, J. He, F. Liu, Q. Ye
    IHEP, Beijing, People's Republic of China
  The C-ADS Injector-I is an experimental proton machine in IHEP. An interlock system based on redundancy PLC was developed for machine protection and personnel safety. Device status, radiation dose, temperature of cavities and chambers are collected for machine state judge and interlock. A MPS (Machine Protection System) work together with the interlock system in the control loop, and protect the machine in four levels for different situation.  
MOPGF147 Realization of a Concept for Scheduling Parallel Beams in the Settings Management System for FAIR controls, operation, storage-ring, framework 1
  • H.C. Hüther, J. Fitzek, R. Müller, A. Schaller, W.W. Terpstra
    GSI, Darmstadt, Germany
  Approaching the commissioning of CRYRING, the first accelerator to be operated using the new control system for FAIR (Facility for Antiproton and Ion Research), the new settings management system will also be deployed in a production environment for the first time. A major development effort is ongoing to realize requirements necessary to support accelerator operations at FAIR. The focus is on the pattern concept which allows controlling the whole facility with its different parallel beams in an integrative way. Being able to utilize central parts of the new control system already at CRYRING, before the first FAIR accelerators are commissioned, facilitates an early proof of concept and testing possibilities. Concurrently, refactorings and enhancements of the commonly used LSA (LHC Software Architecture) framework take place. At CERN, the interface to devices has been redesigned to enhance maintainability and diagnostics capabilities. At GSI, support for polynomials as a native datatype has been implemented, which will be used to represent accelerator settings as well as calibration curves. Besides functional improvements, quality assurance measures are being taken to increase code quality in prospect of productive use.  
poster icon Poster MOPGF147 [1.516 MB]  
MOPGF153 Beam Instrumentation and Data Acquisition for CRYRING@ESR controls, instrumentation, linac, hardware 1
  • T. Hoffmann, H. Bräuning, R. Haseitl, R. Lonsing, P.B. Miedzik, T. Milosic, A. Petit, A. Reiter
    GSI, Darmstadt, Germany
  At FAIR the re-assembly of the well known CRYRING accelerator, formerly hosted by Manne Siegbahn Laboratory (MSL) Stockholm, is currently in progress. This compact low energy heavy ion synchrotron and experimental storage ring will be a testing platform for all control system (CS) concepts decided on for FAIR. The CRYRING CS will be based on the system originally developed by CERN which combines the JAVA based application level LSA (LHC Software Architecture) , the data acquisition level FESA (Front-End Software Architecture) and the White Rabbit based timing system. All parts have been enhanced with GSI specific functionality. In preparation for the commissioning of CRYRING later in 2015 all required beam instrumentation (BI) equipment including the software is now under development. The data acquisition (DAQ) concepts for the various instruments is presented, with emphasis on the seamless integration into the overall CS. For standard BI systems, such as digital imaging, profile and intensity measurement, VME and IndustryPC based DAQ systems are used. For beam position monitoring a new hardware strategy which combines the microTCA and FMC (FPGA mezzanine card) form factors is under evaluation.  
poster icon Poster MOPGF153 [2.028 MB]  
MOPGF174 Laser - Driven Hadron Therapy Project laser, hadron, target, proton 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.  
TUC3O06 Machine Protection System for the KOMAC 100-MeV Proton Linac linac, operation, proton, ion-source 1
  • Y.G. Song, Y.-S. Cho, D.I. Kim, H.S. Kim, H.-J. Kwon, K.T. Seol, S.P. Yun
    KAERI, Daejon, Republic of Korea
  Funding: This work has been supported through KOMAC operation fund of KAERI by MSIP(Ministry of Science, ICT and Future Planning)
A Machine Protection System (MPS) is one of the important systems for the 100-MeV proton linear accelerator of the Korea Multi-purpose Accelerator Complex (KOMAC). The MPS is required to protect the very sensitive and essential equipment during machine operation. The purpose of the MPS is to shut off the beam when the Radio-Frequency (RF) and ion source are unstable or a beam loss monitor detects high activation. The MPS includes a variety of sources, such as beam loss, RF and high voltage converter modulator faults, fast closing valves for vacuum window leaks at the beam lines and so on. The MPS consists of a hard-wired protection for fast interlocks and a soft-wired protection for slow interlock. The hardware-based MPS has been fabricated, and the requirement has been satisfied with the results within 3 μs. The Experimental Physics and Industrial Control System (EPICS) control system has been also designed to monitor and control the MPS using a Programmable Logic Controller (PLC). This paper describes the design and implementation of the MPS for the 100-MeV proton linear accelerator of the Korea Multi-purpose Accelerator Complex (KOMAC).
slides icon Slides TUC3O06 [12.865 MB]  
WEPGF034 The Power Supply Control System of CSR controls, power-supply, database, operation 1
  • W. Zhang, S. An, S.Z. Gou, K. Gu, P. Li, Y.P. Wang, M. Yue
    IMP/CAS, Lanzhou, People's Republic of China
  This paper gives a brief description of the power supply control system for Cooler Storage Ring (CSR). It introduces in detail mainly of the control system architecture, hardware and software. We use standard distributed control system (DCS) architecture. The software is the standard three-layer structure. OPI layer realizes data generation and monitoring. The intermediate layer is a data processing and transmission. Device control layer performs data output of the power supply. We use ARM + DSP controller designed by ourselves for controlling the power supply output. At the same time, we have adopted the FPGA controller designed for timing for power supply control in order to meet the requirements of accelerator synchronized with the output of the power supply.  
poster icon Poster WEPGF034 [0.254 MB]  
WEPGF084 New Digitisers for Position Sensitive 3He Proportional Counters detector, neutron, electronics, FPGA 1
  • P. Mutti, M. Plaz, E. Ruiz-Martinez, P. Van Esch
    ILL, Grenoble, France
  3He gas-filled detectors are a classical choice for the detection of thermal and cold neutrons. The incident neutrons are captured by the 3He producing a tritium and an hydrogen which are sharing the 765 keV of energy generated in the reaction. The classical geometry of a charge-division neutron detector consists of a cylindrical volume housing a resistive anode. Electrical signals are extracted at both ends of the tube and the information about the interaction point along the tube can be derived from the ratio of the collected charged at both ends. The classical analog approach for the charge readout consists of a shaping amplifier coupled with a peak sensing ADC. The development of a new digital front-end electronics based on 64 channels, 62.5 Msample/s and 12 bit digitisers, is reported on. Excellent results have been obtained in terms of position resolution and signal to noise ratio when adopting a continuous digital filtering and gaussian shaping.  
poster icon Poster WEPGF084 [8.285 MB]  
WEPGF113 Physics Application Infrastructure Design for FRIB Driver Linac target, EPICS, controls, linac 1
  • G. Shen, Z.Q. He, M. Ikegami, D. Liu, D.G. Maxwell, V. Vuppala
    FRIB, East Lansing, Michigan, USA
  • E.T. Berryman
    NSCL, East Lansing, Michigan, USA
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661.
FRIB, which is a new heavy ion accelerator facility to provide intense beams of rare isotopes is currently under construction at Michigan State University. Its driver linac accelerates all stable ions up to uranium, and targets to provides a CW beam with the energy of 200MeV/u and the beam power of 400 kW. The beam commissioning of the driver linac has been planned to start from December 2017. A new infrastructure is under development using service oriented architecture for physics applications, which is a 3-tier structure consisting of upper level, middle layer, and low level respectively. The detailed design and its current status will be presented in this paper.