Aug 9, 2016 | No Comments | By Alex Sun
This week I focused on plate lapping. There are three different types of plate for the experiment. The flyer plate and back target are easily lapped with high quality (below than 1 ring). The front target plate need longer time to lap, usually about 4 hours, which can result in 2 or 3 rings of flatness. The general profiles of lapped plate are acceptable. I am polishing the back target plate now and will work on real 600line/mm grating this week on back target plate and target assembly. I decide to put the grating first and then setup the target sandwich because the rotation of photolithography may generate specific patterns on granular specimen.