(Jordan, Gerardo)
We inspected the 5 viewports on the west door of HAM2.
We found on viewport A1F4 the typical smudge or print left by first contact the print appears to be on the inside, but not the vacuum side (this VP has two windwos). We also noted a scratch on the outside window (not under vacuum), around 1 O'clock and about 3/4" away from the edge, we contacted Keita who was walking by the area and we asked him if the location of the smude/scratch were on the path of beam, no they are not. BTW, VP4 is a high quality wedged viewport, a double window, type D1101714.
Then on A1F2 ZV-800 viewport we noted some scratches, something was dancing on the window, since it appears as a single scratch with multiple turns. This viewport was removed and replaced with a spare ZV-800 type. SN of new unit is 0098, old scratched and full of particulate viewport serial number 63.
All other viewports nothing to report, A1F1, A1F3, A1F5.
(Jordan, Gerardo)
Both viewports were removed to get a closer look on the bench, both have several scratches on both surfaces (vacuum side and air side), we are trying to quantify the defects. More on the inspection on the next couple of days. Locations of viewports are A2F1 and A2F4. The rest of the ports have blanks.
Pictures of the A2F1 (ZV800 SN 80 Uncoated) and A2F4 (ZV-800 SN81 Uncoated) viewports on HAM2 for reference. Full inspection report will be made and posted to the DCC now that the viewports are removed. We are evaluating potential replacements.
