Keyword: database
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MOPME040 MadFLUKA Beam Line 3D Builder. Simulation of Beam Loss Propagation in Accelerators optics, dipole, lattice, shielding 463
 
  • M. Santana-Leitner, Y. Nosochkov, T.O. Raubenheimer
    SLAC, Menlo Park, California, USA
 
  Funding: This work was supported by Department of Energy contract DE-AC02-76-SFO0515
Beam tracking programs provide information of orbits along the nominal trajectory to design beam-line optics. Other aspects like machine or radiation protection, which inspect the transverse dimensions and volumes, are simulated with radiation transport Monte Carlo codes, some of which also include magnetic tracking capabilities. Evaluation of certain aspects, like beam loss shower induced propagation along a beam line, or beam mis-steering phase-space, would require to combine features of both types of codes, or use the latter ones with full accelerator 3D implementations, often too cumbersome and time consuming. This paper presents MadFLUKA, a program that produces FLUKA compatible geometries from MAD files. Objects selected from a user user-configurable database are auto-replicated with the rules of ‘twiss’ and ‘survey’ files to create beam lines with hundreds of components. FLUKA magnetic subroutine is generated from MAD optics, including history randomization of fields for ray-trace analysis of mis-steering failures. MadFLUKA is used in the design of the LCLS-II, at SLAC.
 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-MOPME040  
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THPRO071 Control of Calculations in the Beam Dynamics using Approximate Invariants controls, quadrupole, experiment, emittance 3041
 
  • S.N. Andrianov
    St. Petersburg State University, St. Petersburg, Russia
  • D. Zyuzin
    FZJ, Jülich, Germany
 
  One of the important problems in the theory of dynamical systems is to find corresponding (invariants). In this article we are discussing some problems of computing of invariant functions (invariants) for dynamical systems. These invariants can be used for describing of particle beams systems. The suggested method is constructive and based on the matrix formalism for Lie algebraic tools. We discuss two types of invariants: kinematic and dynamic. All calculations can be realized in symbolic forms, in particular, kinematic invariants are based on the theory of representations of Lie algebras (in particular, using the Casimir’s operators). For the case of nonlinear kinematic invariants we propose a recursive scheme, which can be implemented in symbolic forms using instruments of computer algebra (for example, such packages as Maple or Mathematica). The corresponding expressions for invariants can be used to control the correctness of computational experiments, first of all for long time beam dynamics.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO071  
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THPRO101 Setup of a History Storage Engine based on Hypertable at ELSA controls, interface, operation, distributed 3128
 
  • D. Proft, F. Frommberger, W. Hillert
    ELSA, Bonn, Germany
 
  The electron stretcher facility ELSA serves external hadron physics experiments with a beam of unpolarized and polarized electrons of up to 3.2 GeV energy. Its in house developed control system is able to provide real time beam diagnostics as well as steering tasks in one homogeneous environment. The existing archive engine, a simple application logging parameter changes to a file storage, was unable to cope with the rising amount of parameter updates per second. Therefore a new storage system based on the non-relational database system hypertable has been introduced. It is capable of storing huge amounts of data to distributed storage systems, thus being able to handle the recording of every parameter change at any given time. The data can be read back with low latency to a newly developed graphical data browser using a C++ interface. This contribution will give details on the setup and performance of the history storage engine on top of hypertable.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO101  
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THPRO110 High Availability Software Architecture of C-ADS Control System controls, software, EPICS, software-architecture 3153
 
  • P.F. Wang, J.S. Cao, Q. Ye
    IHEP, Beijing, People's Republic of China
 
  The control system of Accelerator Driven Sub-critical System (ADS) should be a high-availability (HA) system with fault tolerant architecture, due to the potential utilizations of the ADS, such as separating and transmuting irradiated nuclear fuel. This paper discusses the HA software architecture of ADS control system which mainly composed by four softwares, which are 1) low floor communication and control system–-EPICS [1], 2) hierarchal programming framework of the accelerator–XAL [2], 3) monitoring and operating large scale control systems–Control System Studio (CSS) [1], 4) data storage and service infrastructure–HA database and server cluster. In addition, the recent development of ADS control system is briefly introduced in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2014-THPRO110  
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