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Ultracold neutron storage and transport at the PSI UCN source
1Laboratory for Particle Physics, Paul Scherrer Institute, 5232 Villigen-PSI, Switzerland.
The European Physical Journal. A, Hadrons and Nuclei
|June 13, 2022
Summary
Researchers optimized ultracold neutron (UCN) transport efficiency by measuring UCN density and transmission in a UCN guide. This work enhances UCN source performance for fundamental physics experiments.
Area of Science:
- Nuclear Physics
- Particle Physics
- Fundamental Physics Experiments
Background:
- Efficient neutron transport is crucial for ultracold neutron (UCN) sources used in high-precision fundamental physics.
- The Paul Scherrer Institute has been characterizing its UCN source parameters to improve performance.
- Previous studies focused on neutron and UCN production, extraction, and transport.
Purpose of the Study:
- To complete the characterization of UCN source parameters by reporting on absolute UCN transport efficiency.
- To quantify and optimize the performance of the UCN guide system.
Main Methods:
- Performed complementary measurements on height-dependent UCN density.
- Measured the transmission of a calibrated UCN quantity through a 10m UCN guide section.
- Utilized extensive Monte Carlo simulations for analysis and optimization.
Main Results:
- Reported on absolute UCN transport efficiency, completing previous publications.
- Quantified UCN density variations within the guide.
- Determined UCN transmission efficiency through the guide system.
Conclusions:
- The study provides essential data for optimizing UCN guide system performance.
- Enhanced understanding of UCN transport contributes to improved UCN source efficiency.
- These findings support the development of UCN sources for advanced fundamental physics research.
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