Keyword: optics
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MOPV012 The ESRF-EBS Simulator: A Commissioning Booster controls, storage-ring, TANGO, SRF 132
  • S.M. Liuzzo, L.R. Carver, J.M. Chaize, L. Farvacque, A. Götz, D. Lacoste, N. Leclercq, F. Poncet, E.T. Taurel, S.M. White
    ESRF, Grenoble, France
  The ESRF-Extremely Brilliant Source (ESRF-EBS)* is the first-of-a-kind fourth-generation high-energy synchrotron. After only a 20-month shutdown, scientific users were back to carry out experiments with the new source. The EBS Simulator (EBSS) played a major role in the success of the commissioning of the new storage ring. Acting as a development, sandbox and training platform, the machine simulator allowed control room applications and tools to be up and ready from day one. The EBSS can also be seen as the initial block of a storage ring digital twin. The present article provides an overview of the current status of the EBS Simulator and presents the current roadmap foreseen for its future.
* J.C.Biasci et al., "A Low-Emittance Lattice for the ESRF.’ Synchrotron Radiation News 27.6 (2014)
poster icon Poster MOPV012 [16.447 MB]  
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About • Received ※ 29 September 2021       Revised ※ 18 October 2021       Accepted ※ 20 November 2021       Issue date ※ 06 February 2022
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MOPV047 Upgrading Oracle APEX Applications at the National Ignition Facility laser, database, software, GUI 267
  • A. Bhasker, R.D. Clark, R.N. Fallejo
    LLNL, Livermore, California, USA
  As with all experimental physics facilities, NIF has software applications that must persist on a multi-decade timescale. They must be kept up to date for viability, sustainability and security. We present the steps and challenges involved in a major application upgrade project from Oracle APEX v5 to Oracle APEX v19.2. This upgrade involved jumping over 2 major versions and a total of 5 releases of Oracle APEX. Some applications that depended on now legacy Oracle APEX constructs required redesigning, while others that broke due to custom JavaScript needed to be updated for compatibility. This upgrade project, undertaken by the NIF Shot Data Systems team at LLNL, involved reverse-engineering functional requirements for applications that were then redesigned using the latest APEX out-of-the-box functionality, as well as identifying changes made in the new Oracle APEX built-in ’plumbing’ to update custom-built features for compatibility with the new Oracle APEX version. As NIF enters into its second decade of operations, this upgrade allows these aging applications to function in a more sustainable way, while enhancing user experience with a modernized GUI for Oracle APEX web-pages.  
poster icon Poster MOPV047 [1.392 MB]  
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About • Received ※ 08 October 2021       Accepted ※ 10 February 2022       Issue date ※ 17 March 2022  
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TUPV047 Controlling the CERN Experimental Area Beams software, experiment, controls, database 509
  • B. Rae, V. Baggiolini, D. Banerjee, J. Bernhard, M. Brugger, N. Charitonidis, M. Gabriel, A. Gerbershagen, R. Gorbonosov, M. Hrabia, M. Peryt, C. Roderick, G. Romagnoli
    CERN, Geneva, Switzerland
  • L. Gatignon
    Lancaster University, Lancaster, United Kingdom
  The CERN fixed target experimental areas are comprised of more than 8km of beam line with around 800 devices used to control and measure the beam. Each year more than 140 groups of users come to perform experiments in these areas, with a need to access the data from these devices. The software to allow this therefore has to be simple, robust, and be able to control and read out all types of beam devices. This contribution describes the functionality of the beamline control system, CESAR, and its evolution. This includes all the features that can be used by the beamline physicists, operators, and device experts that work in the experimental areas. It also underlines the flexibility that the software provides to the experimental users for control of their beam line during data taking, allowing them to manage this in a very easy and independent way. This contribution also covers the on-going work of providing MAD-X support to CESAR to achieve an easier way of developing and integrating beam optics. An overview of the on-going software migration of the Experimental Areas is also given.  
poster icon Poster TUPV047 [1.262 MB]  
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About • Received ※ 11 October 2021       Revised ※ 21 October 2021       Accepted ※ 21 December 2021       Issue date ※ 18 January 2022
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WEAL01 Image Processing Alignment Algorithms for the Optical Thomson Scattering Laser at the National Ignition Facility alignment, laser, target, plasma 528
  • A.A.S. Awwal, T.S. Budge, R.R. Leach, R.R. Lowe-Webb, V.J. Miller Kamm, S. Patankar, B.P. Patel, K.C. Wilhelmsen
    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.
Understanding plasma performance in the world’s largest and most energetic laser facility, the National Ignition Facility (NIF), is an important step to achieving the goal of inertial confinement fusion in a laboratory setting. The optical Thompson scattering (OTS) laser has been developed to understand the target implosion physics, especially for under-dense plasma conditions. A 5w probe beams can be set up for diagnosing various plasma densities. Just as the NIF laser with 192 laser beams are precisely aligned, the OTS system also requires precision alignment using a series of automated closed loop control steps. CCD images from the OTS laser (OTSL) beams are analyzed using a suite of image processing algorithm. The algorithms provide beam position measurements that are used to control motorized mirrors that steer beams to their defined desired location. In this paper, several alignment algorithms will be discussed with details on how they take advantage of various types of fiducials such as diffraction rings, contrasting squares and circles, octagons and very faint 5w laser beams.
*This is released as LLNL-ABS-821809
slides icon Slides WEAL01 [1.303 MB]  
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About • Received ※ 08 October 2021       Revised ※ 18 October 2021       Accepted ※ 21 November 2021       Issue date ※ 14 March 2022
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WEPV019 Renovation of the Beam-Based Feedback Controller in the LHC controls, feedback, framework, operation 671
  • L. Grech, D. Alves, A. Calia, M. Hostettler, S. Jackson, J. Wenninger
    CERN, Meyrin, Switzerland
  • G. Valentino
    University of Malta, Information and Communication Technology, Msida, Malta
  This work presents an extensive overview of the design choices and implementation of the Beam-Based Feedback System (BBFS) used in operation until the LHC Run 2. The main limitations of the BBFS are listed and a new design called BFCLHC, which uses the CERN Front-End Software Architecture (FESA), framework is proposed. The main implementation details and new features which improve upon the usability of the new design are then emphasised. Finally, a hardware agnostic testing framework developed by the LHC operations section is introduced.  
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About • Received ※ 10 October 2021       Accepted ※ 21 November 2021       Issue date ※ 12 March 2022  
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