Hello colleagues,

I would like to inform you about a content of my reports at the Meeting.
I hope it will help our discussions.

1.I believe that my message "wire count" from March 15 is the draft
for dicussions.


2. According to my understanding my report "Finalize design and schedule"
is a superposition of several reports. Let me suggest that below reports
will be discussed before/after my report:

2.1.Central PC's.

2.2.He Gaps (size).

2.3.Protective DME layer.

2.4.Field wires vs No Field wires.

2.5.Assembly (1 or 2 pieces).

2.6.Mechanical:
2.6.1.Germetisation of different gases,
2.6.2.Wire outputs,
2.6.3.Gases input and output,
2.6.4.Selection of G10 thickness between gase volumes,
2.6.5.Thermal isolation of chamber volume in order to provide the
gases temperature with stability +/- 0.3 degree,
2.6.6.Design of preamps boards,
2.6.7.Alignment of the chamber assembly.

2.6.(Preamps + postamps + discriminators) decision.


3.I would like to discuss the problem of the assembly design decision
on next December EEC. I see two solutions:

3.1.Collaboration meeting believes that we must continue to test of
chambers in order to provide the reliable final approval of the EEC.
Let me suggest to manufacture and test 4Y planes of PC4 with 16 wires per
plane, and with a low cross talk lamel.
Goals of the job are:
3.1.1.Cross talk value between next wires and it compensation,
3.1.2.Stability of the assembly (no spark),
3.1.3.Eff(r),
3.1.4.Wire positions measurement,
3.1.5.R(t) reconstruction.

Exact say it is a review of the August 97 run if we belive that we
needed to do it. Disadvantage is a delay of chamber mass production only.
I believe that we will be needed to do it if only one member of the E614
will insist on.

3.2.Collaboration meeting believes that we have a chamber design for
the EEC approval. As result we can begin the chamber mass production.

We need some equipment for the both jobs. Most important are:
*two rotated tables,
*one side copper covered G10 with a min. thickness (0.2mm or lesser),
*conductive epoxy glue,
*the clean room.



4. I would like to discuss a design of the stopping target changing.
_____________________
Regards,
Vladimir

P.S. Dave, put please this message and my message "wire count"
on e614 box as plans my reports if it is need.

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