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14th Beam Telescopes and Test Beams Workshop

13–17 Apr 2026
Europe/Zurich timezone

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Session

BL4S

16 Apr 2026, 14:00

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  1. 59. Introduction to the BL4S Competition
    Dr Jorge Andres Villa Velez, Seyma Esen (CERN)
    16/04/2026, 14:00
    Talk

    Beamline for Schools (BL4S) is a physics competition for high school students from all around the world organised at CERN, the European Laboratory for Particle Physics, in Geneva, Switzerland, and DESY, the German Electron Synchrotron, in Hamburg, Germany. Teams of high school students can propose an experiment that they want to perform at a beamline, that is, a part of a particle accelerator....

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  2. 63. Secondary particle effects on neutron yield in spallation target
    Cyril Bernard, Maxime Delsemme, Noah Sonck
    16/04/2026, 14:15
    Talk

    Spallation is a nuclear process in which high-energy particles interacting with a heavy target generate hadronic cascades leading to intense neutron production. In this experiment conducted as part of the BL4S competition at the PS (proton synchrotron) at CERN, we investigate the effect of composite spallation targets combining tungsten and aluminium on neutron yield. The presence of a light...

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  3. 64. Nuclear Spallation Efficiency: Target Material Optimisation
    Ela Nur Kırdemir, Emir Özaktaş, Mert Musluoğlu
    16/04/2026, 14:30
    Talk

    Nuclear spallation is a key method for neutron production in nuclear physics and applied research. In this project, we investigate how target material and thickness affect neutron yield using 1, 5 and 10 GeV positive and negative beams on cylindrical Tungsten and Copper targets. We compare the dimensions 15 cm diameter × 60 cm height and 15 cm diameter × 30 cm height targets to study geometric...

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  4. 60. Calibration of a Three-dimensional Muon Detector Based on Scintillator Binary Optical Encoding at DESY
    Aljoscha Ziegleral
    16/04/2026, 14:45
    Talk

    Cosmic muons constantly reach Earth at a rate of about 1 muon per square centimetre per minute. To provide a safe, simple, and reproducible alternative to high-voltage spark or wire chambers, we developed a three-dimensional scintillator-based detector, the Scintillating Chamber. The detector employs a binary-encoded arrangement of scintillator rods, reducing the number of required sensors to...

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  5. 61. Transition Radiation in Multi-Layered Dielectric–Metallic Targets for Soft X-Ray Generation and Beam Diagnostics
    Snajana Rajaram
    16/04/2026, 15:00
    Talk

    We designed and carried out an experiment to investigate transition radiation X-rays generated by relativistic electrons traversing through self-built multilayered radiators. The experiment was selected as a winning project in CERN’s 2025 Beamline for Schools competition. Measurements were performed at the ELSA accelerator at the University of Bonn using electron beam energies of 1.8 - 3.2...

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  6. 62. Eysenhardtia polystachya (Kidneywood): Pigment and Fluorite Used as Scintillator Media.
    Haziel Barcenas Flores
    16/04/2026, 15:15
    Talk

    Two scintillator detectors were constructed using the pigment Eysenhardtia polystachya, commonly known as Kidneywood, in an aqueous solution and a fluorite crystal, coupled to a silicon photomultiplier. These media were tested as scintillator media with a Sr90 electron source with an energy range of 0.5 to 2 MeV, obtaining a mean amplitude on the oscilloscope of 10 mV; with a frequency of 2...

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