Abstract: This paper presents the design and implementation of a positioning system with a dc servomotor and ball-screw mechanism used to realize high-precision positioning over a wide travel range with ...

Abstract: The root mean square gradient (GRMS) is a key parameter for KH2PO4 crystal of lowfrequency wavefront, which affects the focusing performance in the inertial confinement fusion (ICF) system. The large wavelength waviness ...