**Mechanical/Electrical Engineering Minutes  Peem3 meeting 3-10-04**\
Attendance: -  R.Duarte, D.Munson, F.Ottens, A.MacDowell (scribe),
N.Kelez,  Dennis Baum, T.Warwick, H.Padmore, W.Gath

1.  **Electrical/Controls**. F.Ottens stated that assembly of test
    layouts of the voltage and amp supplies are progressing. A.MacDowell
    has supplied a rack layout plan. A.Scholl has produced Labview front
    panels that can act as a basis for the code - a controls meeting is
    to be held next Tuesday

2.  **Separator** -- W.Gath requested that various items and
    specification be supplied to him so that he can make progress with
    the test quadrant his group is assembling. The following was decided

> \- The radius and lengths of the wire and pipes need to be supplied -
> these are not critical and D.Munson will supply something that is
> reasonable and consistent with the current model.
>
> \- W.Gath was concerned how to seal the 36 water pipes. His
> suggestions of a plate with 36 holes, that clamps to a water plenum
> was approved, it was realized (T.Warwick) that it was easy to
> incorporate an air guard with this design. D.Munson to draw it up.
>
> \- flow monitoring of the water through the 18 pipes will not be
> possible, Thermocouples will be used instead, connect them to the
> strongback support locations and run the TC through the body of the
> magnet.
>
> \- W.Gath to use Lord E-301 Epoxy with 0.0005\" filler to make up the
> first demonstration winding.
>
> \- The strongback wire assembly will be made serially such that
> information gained on one can be added to the next.
>
> \- A.MacDowell and D.Munson to look into epoxy vacuum issues.
>
> \- Information obtained after the meeting :-

\- Symmetry tolerance for the trim coils (From R.Schhlueter): .001\"

\- The groove in the strongback for the trims will be cut .001\" over
the wire size. Per discussion with Bill Gath

\- The trim wire size measured in at .0382\" to .0385\".

\- One strongback will be cut from the Ampco-18 next week.

3.  **Electron Optics** - R.Lowe is detailing the objective lens

4.  **Layou**t - The space issue of where the laser goes was studied.
    The suggestion is to take over the entire front end region of 11.3.1
    and enclose it with a laser curtain. Two laser systems are required
    to go here :- the timing system for Peem3 (6\'x2.5\' table) and the
    high power system (4\'x8\') for the 11.0.1 side station for sub-
    picosec. magnetization dynamics. The later table is required to be
    able to migrate to BL4. The crane could be used for this. The
    intention is that there will be a permanent laser lab in close
    proximity to the EPU line 11. N.Kelz to lay this out with laser
    transport pipe for the side station. H.Padmore to sell it to
    BL11.3.1 users.

5.  **Microscope main vessel** - Amuneal want to know the stray magnetic
    fields we are likely to encounter so they can model what we would
    like and make recommendations for the mu metal screening

> \- Viewport problems around the sample region were resolved by means
> of a pyrex window on the UHV sub chamber.
>
> \- Pumping the space between the O rings in the main top flange should
> be accomplished by means of a KF 10 in the lid. Put it close to the
> turbo pump as the backing pump will connect to this KF 10.