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Design and commissioning of the PRIOR-II "proton microscope for FAIR"
M Schanz1, D Varentsov1, J C Allison2
1Plasmaphysics Department, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291 Darmstadt, Germany.
The Review of Scientific Instruments
|December 26, 2024
Summary
A new proton radiography facility, PRIOR-II, has been commissioned for advanced materials and physics research. This powerful tool enables high-speed, non-invasive diagnostics for probing dense matter with protons.
Area of Science:
- Charged particle radiography
- Plasma and shock wave physics
- Materials science
- Medical physics
Background:
- Existing radiography techniques face limitations in probing dense matter.
- There is a need for high-speed, non-invasive diagnostic methods for fundamental science.
- Advancements in accelerator technology enable new experimental capabilities.
Purpose of the Study:
- To design, construct, and commission the PRIOR-II facility.
- To push the boundaries of charged particle radiography using normal conducting magnets.
- To establish a new user facility for fundamental science experiments.
Main Methods:
- Utilizing high energy protons (up to 4 GeV) from the SIS-18 synchrotron.
- Employing normal conducting magnets to achieve high spatial resolution.
- Designing for ultra-fast dynamic experiments and probing high areal densities (up to 100 g/cm²).
Main Results:
- Successful design, construction, and commissioning of the PRIOR-II facility.
- Demonstration of pushing technical boundaries in charged particle radiography.
- Readiness to support fundamental science experiments at GSI and future FAIR facility.
Conclusions:
- PRIOR-II is a new, powerful user facility for advanced scientific research.
- The facility enables high-speed, non-invasive diagnostics for dense matter.
- It will address key challenges in plasma physics, material science, and medical physics.

