BEAST SVD Installation Notes from Marc Rosen


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The current ladder in BEAST/SVD is a middle ladder.  Hence, the next one 
will be an outer ladder and the radiative effects of heating will most 
immediately affect the ladder currently installed.  The conductive 
effects of heating should remain the same as present, ie the diode layer 
is insulated from the ladder mounts, but bonded to the skin.

Note that the last 2 times that the SVD quad was removed and replaced, 
we did it with all the outer drift tube modules in position, 
therefore not interrupting any gas flows.

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The ladder installation is pretty basic, so here is a list of some 
important things to remember:

Gain access to the inner quadrant by removing the skin via the four 4-40 
flat head screws at the four outer corners.

The slot in the ladder mount was intended to accept 4 blue ribbon 
cables.  The two new ones can either go through the slot or around the 
ladder mount block.

Ladder cables plug into the ABC card with the labels showing on each side.

The ABC card & cable were passed through the end-cap slot with 
the two capacitors removed, which were then re-soldered.

The new ABC cable can either go through the slot or below the end cap, as 
there is room for the cable between the end cap and beam pipe, need be.  
Running the new cable through the slot would be a much cleaner installation.

The new ABC cable should be shielded as I did with the first one.

Tanaka-san should go over all cabling w/BEASTs, especially where the new 
ABC cable plugs into the dock.  As well, more cabling may be required to 
go from the dock to the BEAST cage.

The spare SVD block connector that goes to the +/-5 & 8 vdc supply is in 
one the BEAST spare parts boxes.  It is labeled.

I have left two spring assemblies w/screws, fastened inside of the ladder 
mounts in preparation for the next ladder.  This is all the mounting 
hardware you will need for the 2nd ladder.  Heat sink grease would be 
useful.

>>>> Avoid touching or letting anything come in contact with the bonding wires!