Keyword: framework
Paper Title Other Keywords Page
MOP004 Design and Study of Cavity Quadrupole Moment and Energy Spread Monitor cavity, quadrupole, simulation, linac 37
  • Q. Wang, Q.Y. Dong, L.T. Huang
    DICP, Dalian, Liaoning, People’s Republic of China
  • Q. Luo
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
  A nondestructive method to measure beam energy spread using the quadrupole modes within a microwave cavity is proposed. Compared with a button beam position monitor (BBPM) or a stripline beam position monitor (SBPM), the cavity monitor is a narrow band pickup and therefore has better signal-to-noise ratio (SNR) and resolution. In this study, a rectangular cavity monitor is designed. TM220 mode operating at 4.76 GHz in the cavity reflects the quadrupole moment of the beam. The cavity plans to be installed behind a bending magnet in Dalian Coherent Light Source (DCLS), an extreme ultraviolet FEL facility. In this position, the beam has a larger dispersion, which is beneficial to measure the energy spread. A quadrupole magnet, a fluorescent screen, and a SBPM with eight electrodes is installed near the cavity for calibration and comparison. The systematic framework and simulation results are also discussed in this paper.  
poster icon Poster MOP004 [0.882 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP004  
About • Received ※ 13 July 2023 — Revised ※ 08 September 2023 — Accepted ※ 13 September 2023 — Issue date ※ 28 September 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
WEP046 Progress on Distributed Image Analysis from Digital Cameras at ELSA using the RabbitMQ Message Broker interface, controls, network, distributed 449
  • M.T. Switka, K. Desch, T.J. Gereons, S. Kronenberg, D. Proft, A. Spreitzer
    ELSA, Bonn, Germany
  In the course of modernization of camera based imaging and image analysis for accelerator hardware and beam control at the ELSA facility, a distributed image processing approach was implemented, called FGrabbit. We utilize the RabbitMQ message broker to share the high data throughput from image acquisition, processing, analysis, display and storage between different work stations to achieve an optimum efficacy of the involved hardware. Re-calibration of already deployed beam profile monitors using machine vision algorithms allow us to perform qualitative beam photometry measurements to obtain beam sizes and dynamics with good precision. We describe the robustness of the calibration, image acquisition and processing and present the architecture and applications, such as the programming- and web-interface for machine operators and developers.  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-WEP046  
About • Received ※ 07 September 2023 — Revised ※ 08 September 2023 — Accepted ※ 15 September 2023 — Issue date ※ 28 September 2023
Cite • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)