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Published on: February 28, 2019
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Exploring mounting solutions for cryogenically cooled thin crystal optics in high power density x-ray free electron
Zhengxian Qu1, Yanbao Ma1, Juhao Wu2
1Department of Mechanical Engineering, University of California, Merced, California 95343, USA.
The Review of Scientific Instruments
|May 1, 2024
Summary
A new hybrid mounting method using clamping and soldering with strain relief cuts stabilizes thin diamond crystals for X-ray Free Electron Laser (XFEL) systems operating at cryogenic temperatures.
Area of Science:
- Materials Science
- Optics Engineering
- Cryogenics
Background:
- Thin diamond crystals are critical components for stable operation in X-ray Free Electron Laser (XFEL) systems.
- Maintaining crystal stability under cryogenic cooling is essential for optimal performance.
- Existing mounting methods present challenges in cryogenic environments.
Purpose of the Study:
- To investigate and compare three mounting methods for cryogenically cooled thin diamond crystals.
- To identify a mounting solution that ensures stability and minimizes distortion.
- To provide a novel approach for high-performance XFEL optics.
Main Methods:
- Investigated clamping, soldering, and a hybrid clamping-soldering approach.
- Analyzed thermal expansion mismatch and stress-induced warping.
- Incorporated strain relief cuts in the hybrid method.
Main Results:
- Clamping methods show temperature resilience but require careful design to avoid warping and minimize thermal contact.
- Soldering methods provide good bonding but face challenges with thermal expansion mismatch at cryogenic temperatures.
- The hybrid method effectively reduces distortion from mounting and XFEL thermal loads.
Conclusions:
- The hybrid clamping-soldering method with strain relief cuts is a promising solution for mounting diamond crystals in cryogenic XFEL systems.
- This approach enhances the stability and functionality of X-ray optics.
- Findings support advancements in XFEL research and applications requiring stable cryogenic optics.
