Dwell time algorithm in ion beam figuring
WebOct 21, 2008 · Dwell time algorithm in ion beam figuring. J. Wu, Z. Lu, Hong Zhang, T. Wang Materials Science Applied optics 2009 TLDR The simulations show that a perfect dwell time solution could be obtained by the revised matrix equation and initial surface error map extension with the help of the least squares QR (LSQR) algorithm. 46 PDF WebStudy on the performances of dwell time algorithms in ion beam figuring. In Optifab 2024 (Vol. 11175, p. 111750M). International Society for Optics and Photonics. [9] Wang, T., …
Dwell time algorithm in ion beam figuring
Did you know?
WebThe Technology of Ion Beam Figuring. Ion beam figuring (IBF) is an etching process under high vacuum conditions especially for optical substrates, like telescope mirrors. A small beam of positive charged ions is used to physically etch material from a substrate. It is also often referred to as ion beam polishing or ion beam finishing, as it is ... http://www.loft.optics.arizona.edu/documents/journal_articles/RIFTA_Tianyi_ScientificReport_2024.pdf
WebApr 21, 2024 · Wang et al. provided a quantitative study on the performances of dwell time algorithms in ion-beam figuring. Han et al. [19,20] proposed a Gaussian mixture model to model experimental removal functions and provided the dwell time algorithm according to the dynamic characteristics of the machine tool. These methods are mainly based on … WebIon beam figuring technology with a spiral scan path based on these methods can be used to figure mirrors with non-axis-symmetrical errors. Experiments on SiC chemical vapor …
WebMay 18, 2024 · Implementation of multiple dwell-time algorithms for ion beam figuring Authors: Tianyi Wang Brookhaven National Laboratory Lei HUANG Brookhaven National Laboratory Abstract Implemented... WebMay 18, 2024 · Ion Beam Figuring (IBF), as a highly deterministic surfacing technique, has been used for ultra-precision finishing of mirrors. One crucial step that guides the …
WebStudy on the performances of dwell time algorithms in ion beam figuring. In Optifab 2024 (Vol. 11175, p. 111750M). International Society for Optics and Photonics. [9] Wang, T., Huang, L., Kang, H. et al. RIFTA: A Robust Iterative Fourier Transform-based dwell time Algorithm for ultra-precision ion beam figuring of synchrotron mirrors.
WebBased on the Bayesian principle, an iterative dwell time algorithm for planar mirrors is deduced from the computer-controlled optical surfacing (CCOS) principle. With the properties of the removal function, the shaping process of low-gradient mirrors can be approximated by the linear model for planar mirrors. highest dci scoreWebSep 5, 2015 · It aims at improving the reachability and adaptation of the figuring process within the limits of machine dynamics by varying the ion beam spot size instead of the scanning velocity. In contrast to the dwell time algorithm in the conventional IBF, the variable-spot IBF adopts a new algorithm, which consists of the scan path programming … how gene editing helpsWebApr 14, 2024 · A more recent development has been interleaving 2D electron microscopy with the application of a focused ion beam (FIB) to image circuits in three dimension by removing material in successive ... highest ddr3 mhzWeb摘要：Ion beam figuring (IBF) is established for the final precision figuring of high-performance optical components, where the figuring accuracy is guaranteed by the stability of the removal function and the solution accuracy of the dwell time. In this deterministic method, the figuring process can be represented by a two-dimensional (2D ... how generate hdfc credit card pinWebdi˛raction limit. Ion Beam Figuring (IBF), as a highly deterministic surfacing technique, has been used for ultra-precision ˞nishing of mirrors. One crucial step that guides the IBF … highest dc voltageWebJul 1, 2014 · Ion beam figuring (IBF) is established for the final precision figuring of optical components. In this deterministic method, the figuring process is represented by a two-dimensional (2D) convolution operation of a constant removal function and the dwell time, where the figuring precision is guaranteed by the stability of the removal function as well … how gene expression worksWebAug 1, 2009 · Three categories of dwell time algorithms, namely Fourier transform-based algorithm, 1, 3 matrix-based algorithm, 4, 12, 15,17 and Bayesian-based algorithm, … highest ddr4 ram speed