water and air outgassing rates for Advanced LIGO Cabling
- Document #:
- LIGO-T1200354-v1
- Document type:
- T - Technical notes
Other Versions:
- Abstract:
- The water and air outgassing rates for a common cable used in Advanced LIGO was measured. This particular cable type is kapton insulated, with twisted pair, overall shielded, PEEK braid over-wrapped, and DB25 connectors. A quantity of 50 cables (not cleaned and not baked) were placed into a vacuum bake oven (VBO F) in the Vacuum Bake Lab at Caltech. The pumpdown rate was monitored over time.
After 576 hrs of pumping (at a rate of 37 liters/sec) at room temperature (23C), the oven was heated to 53C for ~16 hrs and then allowed to cool.
For comparison, the number of cables in the WBSC6 chamber is 51 SEI cables (see E1200042-v1) plus 26 payload cables (see D1101478-v7), or a total of 77 cables. Note that the cables in the chambers include other types including PFA (teflon) insulated cables.
- Files in Document:
-
- P1040408.JPG (3.0 MB)
- pumpdown p vs t curves.jpg (258.1 kB)
- Other Files:
- CIT_VBO_F.pdf (17.4 kB)
- CIT_VBO_F.vsd (208.0 kB)
- oven_turbo_plumbing.pdf (235.3 kB)
- oven_turbo_plumbing.vsd (12.0 MB)
- pumping speed.pdf (64.9 kB)
- pumping speed.xlsx (1.4 MB)
- wet_cable_pumpdown.m (1.9 kB)
- wet_cable_pumpdown_7-16-3-08pm.txt (14.0 MB)
- wet_cable_pumpdown_7-17_3-29pm.txt (738.4 kB)
- wet_cable_pumpdown_7-3-12_23pm.txt (8.7 MB)
- Topics:
- Authors:
- Notes and Changes:
- The pumpdown is still progressing. Preliminary data are posted here.