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I was about to contrast this with the wheel at rest, but now I'm not so sure. I just found that at rest the 0.025" and 0.024" feeler gauges didn't fall down as I had seen earlier, but I had to press hard to keep them up. I will have to think some more about this.
I was about to contrast this with the wheel at rest, but now I'm not so sure. I just found that at rest the 0.025" and 0.024" feeler gauges didn't fall down as I had seen earlier, but I had to press hard to keep them up. I will have to think some more about this.
But I think I will turn the sci-fis around again since it seems they are projecting more on the other side.
But I think I will turn the sci-fis around again since it seems they are projecting more on the other side. This time the screw will be on the left.
Jim put the new part in the splicing unit and said I should check the pressures before fusing. I raised the pressure coming from the compressor and looked at the two regulators. I adjusted the right one that should be 95 PSI, but I could hardly turn the knob to adjust the left one that should be 57 PSI.
Before leaving, I drained the compressor at the bottom. There was not much rust this time.
I should have a to-do list for next week.
1. I need to know whether I am testing bundle 401 or 402.
2. I need to know whether I am reading the color codes the right way or backwards. I need to know if I am putting them in the chimneys correctly.
3. I need to interpret test results.
4. I need to address the problem with adjusting the pressure in the splicing unit.
2/26: Jim said the test data is being cut off at 675. I should remind Dr. Jones about that before I leave.
The fiber color code is read from the elastic farthest from the code end to the one closest to the code end. By code end I mean the end of the fiber that is closest to the color code.
As I thought, the SiPMs and chimneys closest to the backplane are numbers 1 and 16, and those farthest from the backplane and closest to the door are numbers 15 and 30.
Then bundle I have been testing is number 401, not 402, since the fiber color codes match the ones for bundle 401 given in the [https://docs.google.com/spreadsheets/d/1r0ie8X5TxzoVdzD2mMp-dMf9cRbptE4xoxn2mvrBsro/edit?ts=5a5661a0#gid=1603396283 Summer 2017 Fiber Data Log].
The data log shows yellow as the strap color on the Bundle 401 sheet and pink as the strap color on the Bundle 402 sheet. The Information sheet had the wrong colors for bundles 401 and 402, so I changed them.
I continued polishing the sci-fi bundle. Today I pressed harder and reached my goal with the 400 grit paper, which is to get 0.014" from the final length. I came close to the 0.025" feeler gauge on one end of the bundle and 0.029" with the feeler gauges on the other side.
2/27: I ran four tests on bundle 401. Yesterday Dr. Jones said I should pick the best fibers from this bundle for comparison with future test results. I think I might pick the best three from the fibers set forward and the best three from the ones set back. Since the graphs of the test results give the same mean as the mean in the text logs, I will probably use the mean text log column to pick the best fibers.
However, I would like to know how the standard deviation should affect my choice and what the other columns in the text logs mean.