vtx leaks

VTX leak issue links

Here is the pptx presentation for Wed 30 Jan 11:00 EST, and the pdf version.

Wed Jan 12 phone conference:

Other notes: Flow velocity in the staves is ~0.5 m/s.

Friday Jan 4 14:30 EST: Phone conference with Eric Anderson and Tom (last?) at LBL about stave assembly. Eric Mannel leads.
Main topics are exploration of static discharge issues, and chemical interactions.

Stave assembly drawing
Foam core drawing
stave assembly ppt in this directory ( PHENIX Vertex Tracker Production.ppt)
assembly slideshow
Diagram of the current chiller loops
Some samples of foam, partial assemblies will be sent to BNL (will arrive Thursday 17)
Erics notes on the meeting

Week of 7 Jan

vtx dead maps (slides 6,7)
Summary in Ed's DC meeting slides (slides 6-10)

Week of Monday 14 Jan
The FVTX was reassembled into the master frame and prepared (Sat morning), and placed back onto the rails in the IR on Monday morning. Arches were attached Monday afternoon.

All you want to know about galvanic corrosion but were afraid to ask pg. 324 (from Eric)
Atlas report on galvanic corrosion (see pg. 10 ff.) (from Walter)
Atlas thesis on carbon foam(from Walter)
Self-healing coating on Aluminum (from Jimmy)
Pressure test report for the outermost stripixel layer (Rachid)
Stave assembly, prepared for the borescope company. (Walter)
Work plan for 15 Jan ff.
Initial results from LANL Chemistry
Aluminum tube is stock 1/8×1/4" from K&S (14 mil wall, 3003 alloy)
Wed 16 Jan:
- X-Ray Studies (Eric)
- Thermal studies, pinholes found, microscopic pictures.
Thu 17 Jan:
- More microscope pictures (Rachid)
- Visit to Machida borescopes
- Rob's email on C-Al galvanic corrosion, and a link.
Tue22 Jan:
- more on the destructive tests
Wed 23 Jan:
- All still frames taken with the borescope, and some selected frames with explanations
- Movies taken with the borescope
- Summary of the Machida visit (pptx) (Yasuyuki)
- Exposing the tube surface (1)
Thu/Fri 24-25 Jan:
- Exposing the tube surface (2)
- Slicing a portion of the tube open
- Notes on Machida pictures and microscope images (pptx) (Yasuyuki)
- More notes on microscope images (pptx) (Yasuyuki)
Sat, Sun 26 Jan:
- Slicing the tube open in the location where the leak was seen

Week of 28 Jan, and later

Monday 28:
- Results of the active corrosion tests
Thursday Feb 7:
- SEM (scanning electron microscope) pictures

New information is appended as it comes in, currently a few times per day