Minutes of IC RICH1 HPD column meeting
Monday 5th February 2007
Present: Bill Cameron, Dave Clarke, Richard Plackett, Trevor Savidge, and Dave Websdale
Ladder Mechanics
Dave C reports
End pieces (aka pink pieces, end rungs) finished 22 now at IC and 10 at CERN, still need to be anodised.
Adaptor plates (aka fins) will be finished today or tomorrow (5th or 6th), one pair will be anodised to allow testing in the SSB.
U blocks (aka extraction pieces) underway and should be finished this week.
These pieces can be sent to anodisers this week (hopefully).
Paperwork for anodising still to be done RP couldn't hear who volunteered to do it but it was either BC or DC.
Can be sent to anodisers before paperwork complete.
Cooling Plates
Discrepancy between RICH1 and RICH2 is innocuous and solved.
RP will check Italians hole drilling jig against a prop per ladder and make the ladder available to them.
TS reiterates importance of HPD edge accuracy to miss the cups.
Ladder Dressing
RP reports
BBQ and SSB modded by Diddier to accept RICH1 ladders.
Ladder A1 is nearly complete, still requires HV to be attached by Diddier hopefully today, but all other components in place.
A1 is undergoing readout testing on the BBQ today (5th).
RP swapped second rung on A1 for one with a hole in, B2 still to do, last prototype vs production ladder issue.
B2, C1 and D2 all have HV chains mounted by Franco.
B2 has L0 boards mounted.
Expecting Phil and Niko from oxford this afternoon to help with ladder dressing.
Also expecting Davide from Milano to bring 7 LV chains this afternoon and begin mounting them.
Enough HPDs available for columns A1, B2 and C1, expecting their availability to be the limiting factor. RP to discuss with Thierry.
Patch Panel
RP to send TS patch panel picture, possible production of a prototype data panel containing TTC bulkheads to aid ladder dressing.
HPD Box
TS reports
Last week the box was linked to the rail system after negotiations at Oxford, effectively freezing the design.
This allows material to be ordered by DC.
TS will provide DC with a cutting list of lots of parts tomorrow (6th Feb).
RP to ask Olav about light tight PMTs to go in box design.
TS asks if there are any other "aerosol sized" items to go in the box that haven't been considered yet, after a brief discussion it seems not.
RP will add Ken Wyllie's comments on the box design to the minutes today and e-mail them to all present.
GE door support pieces
There was a brief discussion about ordering structural steel for these pieces, DC and BC warned against over engineering these parts as they rapidly become very heavy and unwieldy.
Minutes taken by Richard Plackett