Apr 10 2024

Updates

Marcy and Carlos are updating the schedule for removing the solenoid NEG tube, adding a viewport with pump out port to the upstream of the gun valve with the goal to help Shukui and S&A to se the laser launch for laser retro-reflection after the gun is installed under rough vacuum.
Many thanks to Alicia, Yan, Max and Riad for sending me their ATLis for injector beam commissioning plans. I am adding those to the schedule as well.
The Teflon Rod, as well as S&S crew will be ready by Thursday to continue laser retro-reflection checks with the R30-3 gun in the clean room.
We received one more electrode front end sample from the machine shop with better surface finish. Jessica polished it in the tumbler with our procedure and the results is fantastic. One can see the typical orange peel surface characteristic of SS polished with diamond paste. No machining marks are seen after polishing. See attached pics. The electrode on the righ is the one starting off with better surface finish compared to the left one.
The four electrode front end pieces made with high quality steel have been manufactured. 2 option A (16-30 deg) and 2 option B (16-60 deg). Jessica has been given full time use of the tumbler by SRF and she will have these polished by the end of the week.