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International Workshop on Accelerator Alignment 2026

5–9 Oct 2026
Tsukuba International Congress Center
Asia/Tokyo timezone

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Session

Instrumentation III

9 Oct 2026, 09:40
Middle Hall 200 (Tsukuba International Congress Center)

Middle Hall 200

Tsukuba International Congress Center

2-20-3 Takezono, Tsukuba City, Ibaraki Prefecture 305-0032, Japan

Conveners

Instrumentation III

  • Helene Mainaud Durand (CERN)

Presentation materials

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  1. 70. Installation and Alignment of the Linear Injector for Hefei Advanced Light Facility (HALF) and Deformation Monitoring (FRO03)
    Wei Wang (University of Science and Technology of China)
    09/10/2026, 09:40

    The operational stability of large-scale particle accelerators—such as synchrotron light sources, and free-electron lasers—is fundamentally dependent on the sub-micron structural integrity and thermal stability of their components. However, the sprawling physical scale and extreme environments (high radiation, cryogenic temperatures, and electromagnetic interference) pose significant...

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  2. 71. Evaluation and Deployment of a Robotic Tracing Workflow for HL-LHC Beamline and Services at CERN (FRO04)
    Jean-Frédéric Fuchs (CERN)
    09/10/2026, 10:05

    The 2028 installation phase of CERN's High-Luminosity Large Hadron Collider (HL-LHC) project will require precise positioning of hundreds of accelerator components and accompanying infrastructure within extremely tight integration tolerances. Floor tracing of reference marks is an important prerequisite for installation activities, providing the geometric references used by installation teams...

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  3. 72. Evaluation of Orientation To Gravity (OTG) procedure of AT500 Leica laser tracker and comparative assessment with AT403 Leica laser tracker (FRO05)
    Witold Niewiem (SLAC, Stanford)
    09/10/2026, 10:30

    This study compares the vertical measurement accuracy of two Leica laser trackers: the AT500, which uses Orientation to Gravity (OTG), and the AT403, which provides continuous dual-axis compensation. Laboratory tests using a network of ten stations with a maximum baseline of 18 m showed that OTG correction produces vertical angle uncertainties of up to 0.4 arcsec, making single-instrument...

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  4. 73. Validation of the Ecartometry Measurement by Automatic Photogrammetric Survey (EMAPS) prototype (FRO06)
    Dirk Mergelkuhl (CERN)
    09/10/2026, 10:55

    This paper presents the validation procedure and performance assessment of a new prototype named Ecartometry Measurement by Automatic Photogrammetric Survey (EMAPS).
    Developed for the High-Luminosity LHC (HL-LHC) project, the system measures the horizontal offset between a stretched wire and a target,
    contributing to the development of high-accuracy, automated and remote alignment...

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