Keyword: database
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TUPOST035 BOLINA, a Suite for High Level Beam Optimization: First Experimental Results on the Adige Injection Beamline of SPES diagnostics, software, EPICS, controls 933
 
  • V. Martinelli, L. Bellan, D. Bortolato, M. Comunian, E. Fagotti, P. Francescon, A. Galatà, D. Marcato, G. Savarese
    INFN/LNL, Legnaro (PD), Italy
 
  A high-level software BOLINA (Beam Orbit for LINear Accelerators) has been designed to fully characterise and automatically correct the ion beams trajectory, to help operators during the beam transport with an easily scalable suite for LINACs. Currently, the high-level software, interfaced with an EPICS control system, automatically manages accelerator devices to preserve the beam quality, including beam-based alignment and, if needed, dispersion-free steering software. The suite has been developed to satisfy and commutate the software easily on different machine, using interceptive /not interceptive diagnostics. The software was designed for ELI-np and now is under test at Legnaro National Laboratories of INFN using the installed accelerators complex. In particular, BOLINA has been successfully tested on the Adige Injector 1+ beamline of the SPES Project where the system response matrix is measured on interceptive beam diagnostic by varying both electrostatic and magnetic steerers. This paper describes results and strategies to reduce trajectory residuals close to the diagnostic resolutions and their effectiveness to prepare the commissioning of LINACs.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOST035  
About • Received ※ 12 June 2022 — Revised ※ 12 June 2022 — Accepted ※ 13 June 2022 — Issue date ※ 16 June 2022
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TUPOMS055 A Modernized Architecture for the Post Mortem System at CERN operation, controls, framework, injection 1557
 
  • J.F. Barth, F. Bogyai, J.C. Garnier, M.L. Majewski, T. Martins Ribeiro, A. Mnich, M.P. Pocwierz, R.S. Selvek, R. Simpson, A. Stanisz, D. Wollmann, M. Zerlauth
    CERN, Meyrin, Switzerland
 
  The control system of the accelerators at CERN stores and analyses more than 200 million dumps of high resolution data recordings every year in the Post Mortem (PM) system. A continuous increase in the complexity of the Large Hadron Collider’s (LHC) systems and the desire to collect more accurate data requires continuous improvement of the PM system. Recently, the PM system has been modernized ahead of the third operational Run of the LHC. The upgraded system implements well known data engineering principles such as horizontal scaling, stateless services and readiness for extensions. This paper recalls the purpose of the PM service and its current use cases. It presents its modernized architecture, reviews the current performance and limitations of the system, and draws perspectives for the next steps in its evolution.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-TUPOMS055  
About • Received ※ 07 June 2022 — Revised ※ 14 June 2022 — Accepted ※ 14 June 2022 — Issue date ※ 23 June 2022
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WEPOTK009 Processes and Tools to Manage CERN Programmed Stops Applied to the Second Long Shutdown of the Accelerator Complex MMI, proton, operation, synchrotron 2048
 
  • E. Vergara Fernandez, A. Ansel, M. Barberan Marin, M. Bernardini, S. Chemli, J. Coupard, K. Foraz, D. Hay, J.M. Jimenez, D.J. Mcfarlane, F. Pedrosa, M. Pirozzi, J.Ph.G.L. Tock
    CERN, Meyrin, Switzerland
 
  The preparation and follow-up of CERN accelerator complex programmed stops require clear processes and methodologies. The LHC and its Injectors were stopped in December 2018, to maintain, consolidate and upgrade the different equipment of the accelerator chain. During the Long Shutdown 2 (LS2), major projects were implemented such as the LHC Injectors upgrade and the LHC Dipoles Diodes consolidation. The installation of some equipment of the HL-LHC project took also place. This paper presents the application to the LS2 of the processes and tools to managed CERN programmed stops: it covers the preparation, implementation and follow up phases, as well as the KPIs, the tools used to build a coherent schedule and to follow up and report the progress. The description of the methodology to create a linear schedule, as well the construction of automatised broken lines and progress curves are detailed. It also describes the organizational set-up for the coordination of the works, the main activities and the key milestones. The impact of the COVID-19 on the long shutdown will be described, especially the strategy implemented to minimise its consequences.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOTK009  
About • Received ※ 07 June 2022 — Revised ※ 10 June 2022 — Accepted ※ 13 June 2022 — Issue date ※ 17 June 2022
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WEPOTK010 The Second Long Shutdown of the LHC and Its Injectors: Feedback from the Accelerator Coordination and Engineering Group site, operation, experiment, GUI 2052
 
  • A.-L. Perrot, M. Bernardini, S. Chemli, J.-P. Corso, J. Coupard, F.B. Dos Santos Pedrosa, J. Etheridge, K. Foraz, S. Grillot, J.M. Jimenez, B. Nicquevert, S. Petit, J.Ph.G.L. Tock, E. Vergara Fernandez
    CERN, Meyrin, Switzerland
 
  The operation of the Large Hadron Collider (LHC) at CERN started in September 2008. Every 5 or 6 years, Long Shutdowns (LS) are programmed to execute time-intensive ordinary and extra-ordinary maintenance of the LHC and its injectors. The second LS (LS2) started in December 2018 and was completed end 2020 for the injectors and early 2022 for the LHC. A huge number of maintenance, consolidation and upgrade activities, especially the upgrade of the injectors complex, were performed with challenges at various levels, from technical, to organizational and managerial. This paper presents the applied methodology put in place by the Accelerator Coordination & Engineering (EN-ACE) Group, in charge of the technical coordination of the activities for the interventions and changes to the LHC and its injectors, to ensure that the installation activities are performed safely, meeting the required high level of quality, while optimizing the schedule. It highlights key points of success and lessons learnt in terms of general coordination, quality assurance, configuration and layout management, spatial integration, planning and scheduling, operational safety, logistics and worksite coordination  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOTK010  
About • Received ※ 03 June 2022 — Revised ※ 10 June 2022 — Accepted ※ 17 June 2022 — Issue date ※ 03 July 2022
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WEPOMS011 Single Bunch Instability Studies with a New Impedance Database for Diamond-II impedance, cavity, lattice, synchrotron 2257
 
  • R.T. Fielder, H.C. Chao, S.W. Wang
    DLS, Oxfordshire, United Kingdom
 
  We present an updated impedance database for the Diamond-II storage ring, along with an analysis of single bunch instabilities and thresholds based on particle tracking simulations using Elegant. Various cases with different chromaticity, insertion device parameters and harmonic cavity settings are studied, and the effects on the microwave instability, bunch lengthening and phase shifts are simulated and compared with analytic formulae. Preliminary results show that the single-bunch instability thresholds are above requirements for a uniform fill, and with inclusion of a harmonic cavity the longitudinal and transverse instability thresholds can also satisfy requirements for a hybrid fill.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2022-WEPOMS011  
About • Received ※ 07 June 2022 — Revised ※ 13 June 2022 — Accepted ※ 15 June 2022 — Issue date ※ 22 June 2022
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