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More Photos of the MAPMT and HV baseboard
| Photo of a single
MAPMT. It is about 1" square in size and contains 16 (4x4) cells, each yielding independent analog signal outputs. 
|
Front view of the
16-socket HV baseboard. The custom sockets were machined to have a
"tee" slot in the center to accommodate the vacuum seal post
which extrudes outward from the back of the MAPMT.
|
Back view of the
MAPMT baseboard. The large number of surface mount components is evident.
Each 34-pin connector serves 2 MAPMTs (16 pins each + 2 ground pins). This
board mates to the MAPMT hybrid using a 0.025" centerline flat cable
(not shown). The HV connection post is shown at top-center. Four
0.25" holes are also included to facilitate mounting. |
Side view with two
MAPMTs attached. Note the 1 mm gap was set to accommodate a mu-metal
shield that was to be used to reduce the stray fringe field coming from
the BTeV dipole.  |