Difference between revisions of "Feb 14 2024"
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(Created page with "== From last time == * Plan A is the 16°/30° design. We are going to start the design/fabrication process to quickly get a practice part and go through all the steps. * Ali...") |
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* Alicia's GPT simulations of the injector with Max's distributions indicate all models from 15 to 18 degrees should be manageable. Higher Pierce angles (shorter focal lengths) give a large beam size in the first lens and give high transmission loss at apertures, but the latter is because everything has so far been simulated with the same lens strengths. Max and Alicia will continue this work to re-match the optics for each case to see if the whole system of gun + 1 or 2 lenses actually differs. These studies may identify a suitable Plan B geometry and tell us how much deviation from the nominal geometry can be tolerated. | * Alicia's GPT simulations of the injector with Max's distributions indicate all models from 15 to 18 degrees should be manageable. Higher Pierce angles (shorter focal lengths) give a large beam size in the first lens and give high transmission loss at apertures, but the latter is because everything has so far been simulated with the same lens strengths. Max and Alicia will continue this work to re-match the optics for each case to see if the whole system of gun + 1 or 2 lenses actually differs. These studies may identify a suitable Plan B geometry and tell us how much deviation from the nominal geometry can be tolerated. | ||
* Meeting with Keith on Friday to get the ME design started. | * Meeting with Keith on Friday to get the ME design started. | ||
| − | * Presentation at the upcoming B-Team meeting (2/13/24) about the strategy followed to solve the R30-3 focusing problem. Carlos will make some brief introductory remarks; Max and Alicia will decide to divide the rest of the work as it makes sense. | + | * Presentation at the upcoming B-Team meeting (2/13/24) about the strategy followed to solve the R30-3 focusing problem. Carlos will make some brief introductory remarks; Max and Alicia will decide to divide the rest of the work as it makes sense.[[media:R30-4 gun plan for BTeam meeting February 13 2024.pdf|Presentation can be found here]] |
==Updates== | ==Updates== | ||
Revision as of 09:47, 15 February 2024
From last time
- Plan A is the 16°/30° design. We are going to start the design/fabrication process to quickly get a practice part and go through all the steps.
- Alicia's GPT simulations of the injector with Max's distributions indicate all models from 15 to 18 degrees should be manageable. Higher Pierce angles (shorter focal lengths) give a large beam size in the first lens and give high transmission loss at apertures, but the latter is because everything has so far been simulated with the same lens strengths. Max and Alicia will continue this work to re-match the optics for each case to see if the whole system of gun + 1 or 2 lenses actually differs. These studies may identify a suitable Plan B geometry and tell us how much deviation from the nominal geometry can be tolerated.
- Meeting with Keith on Friday to get the ME design started.
- Presentation at the upcoming B-Team meeting (2/13/24) about the strategy followed to solve the R30-3 focusing problem. Carlos will make some brief introductory remarks; Max and Alicia will decide to divide the rest of the work as it makes sense.Presentation can be found here
Updates
- Max
- Gabriel
- Alicia
- Carlos
Path forward, conclusions
- Wrapping up simulations and forecasting simulations after measuring final piece hole size and puck recess
- Discuss next steps in term of:
- Preparing/practicing polishing
- Machining a test piece
- Measuring holes size of test piece before and after polishing
- Implementing puck test on manufactured piece for measuring wafer plane gap