Development and experimental evaluation of a research-oriented precision glass molding apparatus for micro-optical structure replication [0.03%]
一种用于微光学结构复制的精密玻璃模压实验装置的研究与制作
Pengju Zhao,Lin Zhang,Xian Jing et al.
Pengju Zhao et al.
Precision glass molding (PGM) is a near-net-shape process for fabricating high-precision glass optical components, whose replication accuracy depends on coupled thermal, force, displacement, and pressure-holding conditions. To support proce...
High-pressure-ratio vacuum sealing by a perturbed free-vortex aerodynamic window [0.03%]
受扰动自由涡气动窗口的高压比真空封严
Hiroshi Imao,Kazumasa Takahashi,Yasuto Miyake et al.
Hiroshi Imao et al.
In this study, we investigated a perturbed free-vortex operating concept for enhancing the sealing pressure ratio phigh/plow of a free-vortex aerodynamic window by intentionally shifting the flow away from the conventional matched free-vort...
Umakant Yerge,Abhijit Tillu,Arka Mitra et al.
Umakant Yerge et al.
Electron guns are indispensable components of accelerators, generating electrons under the application of high voltage. High-voltage pulse modulators provide the pulsed extraction voltage required to produce a pulsed electron beam. A novel ...
Error sources in compressible Venturi flow measurement under cryogenic supercritical helium conditions [0.03%]
超临界氦低温条件下可压缩文丘里流量测量误差来源分析
K Zhang,J Li,X Chen et al.
K Zhang et al.
Conventional differential pressure Venturi flow measurement in cryogenic supercritical helium shows a clear dependence of the discharge coefficient on thermodynamic conditions. This behavior becomes more pronounced as operating conditions d...
Precise measurement of the Kerr coefficient using phase-sensitive pump-probe hyperspectral imaging [0.03%]
基于相位敏感泵浦探测超光谱成像的克尔系数精密测量
J K Wahlstrand,C D Cruz
J K Wahlstrand
Phase-sensitive pump-probe hyperspectral imaging is a precise technique for absolute two-beam measurements of the optical Kerr coefficient (n2). The irradiance profile is characterized and background effects rejected by rastering the pump b...
Instrument development for barocaloric performances and fatigue assessments [0.03%]
用于 bara calorics 性能和疲劳评估的仪器开发
Ruiqi Song,Kun Zhang,Bing Li
Ruiqi Song
Barocaloric materials hold significant promise for solid-state cooling, but their development is limited by challenges in precisely measuring the adiabatic temperature change under realistic conditions. Existing methods struggle with achiev...
Sub-10 mK "in-cell" magnetic refrigeration for cryogen-free cryostats [0.03%]
无液氦稀释恒温器的亚10毫开兹“一体化”磁制冷技术
Alexander M Donald,Nicolas Silva,Christopher J Ollmann et al.
Alexander M Donald et al.
A design and implementation of "in-cell" magnetic refrigeration to achieve sub-10 mK temperatures T in cryogen-free dilution refrigerators is presented. The ultra-low temperatures below 5 mK are attained in finite magnetic fields B up to 1 ...
Quasi-static pressure sensitivity characterization of single-mode optical fibers [0.03%]
单模光纤准静态压力灵敏度的表征
C Charliac,I Ghorbel,V Kemlin et al.
C Charliac et al.
We present a measurement setup designed to characterize the pressure sensitivity of single-mode optical fibers, whether freestanding or embedded within a structure. The system uses an unbalanced interferometer, with its long arm consisting ...
Effects of the vibrations and electromagnetic pollution induced by a closed-cycle pulse-tube cryostat on high-accuracy electrical measurements [0.03%]
闭式脉管制冷机的振动及电磁污染对高精度电学测量的影响研究
M Taupin,K Dougdag,D Ziane et al.
M Taupin et al.
A paradigm shift in achieving (sub-)Kelvin environments is currently underway with the democratization of cryogen-free cryocoolers. This transition is driven by their user-friendly, continuous operation and the elimination of liquid helium,...
Technical assessment of a thermal desorption spectroscopy apparatus for plasma facing components [0.03%]
用于面对等离子体部件的热解吸光谱仪装置的技术评估
M Bugatti,M De Angeli,M Iafrati et al.
M Bugatti et al.
The characterization of hydrogen isotope retention and helium-vacancy clustering in plasma-facing materials (PFMs) is essential for the development of long-pulse magnetic confinement fusion devices. This paper provides a technical descripti...