Fluorescent Screen Probe System

High-Sensitivity Transient Optical Imaging · Real-Time Beam Profile/Position/Intensity Monitoring

The fluorescent screen probe system is a core beam diagnostics instrument for high-energy particle accelerators and intense laser experiments. Leveraging the fluorescence excited when special materials are bombarded by high-energy particle beams, combined with high-sensitivity transient optical imaging, it delivers real-time, high-precision 2D monitoring of beam profile, spatial position, and intensity distribution.

Highly Integrated
Highly Customizable
Superior Vacuum
Rich Control Interfaces
Real-Time Imaging & Analysis

Fluorescent screen probe system

Key Applications

Electron AcceleratorsBeam profile and position monitoring for electron guns and linacs
Ion Beam LinesBeam diagnostics for ion sources, low-energy transport lines, and experimental end stations
Experimental CharacterizationBeam quality evaluation for nuclear physics experiments and material irradiation tests
Precision TargetingReal-time feedback for complex physics experiments

Product Features

  • Highly Integrated:Integrates scintillation screen, optical path, acquisition/processing system, and screen drive mechanism — installable directly on the target beamline without additional alignment
  • Two Screen Types Available:Water-cooled (ceramic-coated copper) or uncooled (ceramic) screens for different beam power conditions
  • Highly Customizable:CF100–CF250 and ISO100–ISO250 flange options; customizable stroke and center distance; pneumatic or motorized drive; round or square screens in various sizes
  • Superior Vacuum:Leak rate better than 5×10⁻⁸ Pa·L/s, suitable for HV and UHV environments
  • Rich Control Interfaces:Supports EPICS, TANGO, LACCS, and other accelerator control systems
  • Real-Time Imaging & Analysis:Mature control software provides screen motion control, real-time image acquisition and analysis, displaying spot size, position, and other beam information in real time
Probe photo (uncooled ceramic screen type)Probe photo (water-cooled type)

Working Principle

Bombarded by high-energy particle beams (electrons, protons, heavy ions), the fluorescent screen emits optical signals that are transmitted through the vacuum window to a high-sensitivity camera for real-time 2D beam profile imaging. The control software processes the images and outputs key parameters such as spot size, position, and intensity distribution.

Working principle diagram

Control Software Interface

The mature, complete control software system provides probe motion control, real-time image acquisition and computational analysis, displaying spot size, position, and other beam information in real time.

Control software interface

Key Specifications

Parameter Specification
Flange Interface standard CF100–CF250, ISO100–ISO250 options, customizable on request
Stroke standard 200 mm or 300 mm, customizable on request
Center Distance standard 150 mm or 200 mm, customizable on request
Screen Size Ø60–100 mm round or 60–200 mm square options
Scintillation Screen Al₂O₃ doped scintillator, OTR, or YAG crystal screen options
Image Acquisition various options incl. 720×540, 1440×1080; resolution up to 0.1 mm
Control Software EPICS, LACCS and other accelerator control software interfaces
Motion Control pneumatic or motorized drive options

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