TH2 —  Thursday Session 2   (14-Sep-23   10:50—12:30)
Chair: P. Forck, GSI, Darmstadt, Germany
Paper Title Page
6D and High Dynamic Range Measurements of Hadron Beam Phase-Space  
  • A.V. Aleksandrov
    ORNL, Oak Ridge, Tennessee, USA
  Over last several years, the SNS Beam Instrumentation Group has made significant progress in developing instrumentation to measure and characterize hadron beam distribution with accuracy and resolution sufficient for model-based understanding and mitigation of beam loss in high power hadron linacs. This includes measurement of the beam distribution in high dimensional phase-space to provide realistic initial conditions for particle tracking, and high dynamic range to measure the beam halo. This presentation will describe the latest results from the SNS Beam test facility: measurement of the 6-dimensional phase space with dynamic range sufficient to reveal features not previously observed; 2-dimensional phase-space measurements with 106 dynamic showing emergence of the beam halo; and, in between, the 5-dimensional measurements with sufficient dynamic range and resolution to generate realistic distribution of 10-100 million particles for tracing codes.  
slides icon Slides TH2I01 [11.296 MB]  
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Machine Learning-Assisted Beam Operation at SuperKEKB and Linac at KEK  
  • G. Mitsuka, N. Iida, S.K. Katopresenter, T. Natsui, M. Satoh
    KEK, Ibaraki, Japan
  Hundreds to thousands of tuning parameters must be optimized for each operating condition to obtain the best performance from an accelerator. In the past, experts made decisions based on their experience on which tuning parameters contributed the most to the performance and adjusted them sequentially. On the other hand, accelerator tuning approaches based on machine learning, which has become much easier to handle, have been studied intensively in recent years. We have been developing a beam-tuning tool based on Bayesian optimization for boosting the SuperKEKB accelerator. In this presentation, we will report on the latest status of the beam test of the positron-beam-yield maximization and dispersion tuning at the KEK injector as the first development step.  
slides icon Slides TH2C02 [2.902 MB]  
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TH2C03 Analysis of the Transverse Schottky Signals in the LHC 462
  • K. Łasocha, D. Alves
    CERN, Meyrin, Switzerland
  Schottky-based diagnostics are remarkably useful tools for the non-invasive monitoring of hadron beam and machine characteristics such as the betatron tune and the chromaticity. In this contribution recent developments in the analysis of the transverse Schottky signals measured at the Large Hadron Collider will be reported. A fitting-based technique, where the measured spectra are iteratively compared with theoretical predictions, will be presented and benchmarked with respect to the previously known methods and alternative diagnostic.  
slides icon Slides TH2C03 [4.054 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-TH2C03  
About • Received ※ 06 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 19 September 2023
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Invitation to IBIC 2024  
  • J.H. Yue
    IHEP, Beijing, People’s Republic of China
  The Organizing Committee of the next IBIC conference invites everybody to Beijing, China to attend the 13th International Beam Instrumentation Conference.  
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slides icon Slides TH2I04 [7.450 MB]  
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Closing of IBIC 2023  
  • T. Batten
    CLS, Saskatoon, Saskatchewan, Canada
  Summary and closing of 12th International Beam Instrumentation Conference.  
slides icon Slides TH2I05 [8.883 MB]  
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