Clear Fiber Bundle Health/Status
A summary of all of the testing results of the Clear Fiber bundles since the start.
Criteria for passing (somewhat arbitrary, but based on results from the 3 bundles used in Run 17 that were deemed "good"):
- Average transmission of above -65%
- No single fiber in a bundle has transmission below -75%
Bundles to use in Run 18:
| FB# |
Status |
Comments |
Average |
Max |
Full Sheet |
| 1 |
Healthy |
First bundle; repolished twice |
-63% |
-68% |
FB01 |
| 2 |
Healthy |
Results from 2nd test; avg unchanged from first test |
-55% |
-62% |
FB02 |
| 3 |
Healthy |
|
-54% |
-67% |
FB03 |
| 4 |
Healthy |
|
-63% |
-73% |
FB04 |
| 5 |
Healthy |
|
-62% |
-71% |
FB05 |
| 6 |
Healthy |
Repolished once |
-62% |
-68% |
FB06 |
| 7 |
Healthy |
|
-61% |
-73% |
FB07 |
| 8 |
Healthy |
Repolished 3 times |
-63% |
-72% |
FB08 |
| 9 |
Healthy |
|
-64% |
-71% |
FB09 |
| 10 |
Healthy |
|
-62% |
-68% |
FB10 |
| 11 |
Healthy |
|
-62% |
-73% |
FB11 |
| 13 |
Healthy |
Repolished 3 times |
-64.8% |
-73% |
FB13 |
| 14 |
Healthy |
|
-62% |
-73% |
FB14 |
| 15 |
Healthy |
|
-62% |
-73% |
FB15 |
| 16 |
Healthy |
|
-62% |
-73% |
FB16 |
| 17 |
Healthy |
|
-63% |
-70% |
FB17 |
| 18 |
Healthy |
|
-61% |
-69% |
FB18 |
| 19 |
Healthy |
|
-63% |
-68% |
FB19 |
| 20 |
Healthy |
Repolished twice |
-64% |
-69% |
FB20 |
| 21 |
Healthy |
|
-64% |
-72% |
FB21 |
| 23 |
Healthy |
Repolished once |
-63% |
-72% |
FB23 |
| 24 |
Healthy |
|
-63% |
-74.6% |
FB24 |
| 26 |
Healthy |
|
-62% |
-66% |
FB26 |
| 27 |
Healthy |
|
-57% |
-68% |
FB27 |
Failing Bundles that can still be used in Run 18 in an emergency:
| FB# |
Status |
Comments |
Average |
Max |
Full Sheet |
| 22 |
Injured |
Failing upon retest. Not sure what's going on |
-61% |
-77% |
FB22 |
| 12 |
Injured |
Single fiber glows on both ends, possibly cracked |
N/A |
N/A |
N/A |
| 28 |
Injured |
Failing final test. Also even/odd difference of 6% |
-61% |
-78% |
FB28 |
Bundle Under Construction: FB25 (Broken splitter; construction not completed, but can be fixed and polished for the future if needed)
In summary, at the moment we have:
- 24 Passing Bundles (FB1-FB11, FB13-FB21, FB23-FB24, FB26-FB27)
- 3 Failing Bundles (FB28 has a fiber at -78%; FB12 has a fiber glowing on either end, so it was set aside. Has never been fully tested, but the glowing fiber was actually passing testing; FB22 failing upon retest; 2 fibers below -75%)
- 1 Incomplete bundle (FB25 had a tube splitter that broke. It can be fixed, polished and used, but of course should only be used as a last resort)
Google Spreadsheets for posterity:
Fiber by Fiber testing of every bundle: https://docs.google.com/spreadsheets/d/1rs-XOkZjJQz_nzMzTgH1vVVI4Ck12OCSJ_Dc_WHTaK8/edit#gid=0
Fiber Bundle Status Summary: https://docs.google.com/spreadsheets/d/1u5dWDUeguvjiPTBiH32b--NCzr-gS7l-ocCTeo5hBF0/edit#gid=0