Procedure for aligning a Strip assembly for gluing on C-cage
Equipment Needed
- Alignment fixture (attached to lab jack), adjusted appropriately
for short or long Si detector
- Two 1/8" dowel pins, one 1/4" long and one 3/4" long
- Conductive gloves
- Grounding wrist strap
- Vacuum hose from vacuum reservoir
- Put on conductive gloves and grounding wrist strap.
- Adjust lab jack under alignment fixture to a convenient height for
this species of assembly.
- Transfer of the assembly from the alignment fixture to the C-cage
gluing fixture can be somewhat awkward. Do a dry run, figuring out which hand
will carry the vacuum pickup fixture and which the MCM (don't forget to allow for the vacuum hose). Adjust the relative positions of the alignment fixture and the gluing jig to allow for the best
transfer process.
- Place the short dowel pin in one of the holes on the alignment fixture (be sure the hole is correct for the length of Si detector)
- Attach the vacuum hose to the input on the small vacuum reservoir on the C-cage gluing jig. Verify that the vacuum pickup fixture actually pulls vacuum through the two holes in its face.
- Remove dummy plenum piece from MCM on formed assembly.
- Place the Si detector, strip side up, in the alignment fixture. Make sure it is well aligned with the cavity, which may require some slight adjustment and gentle pressing (with your gloved hand).
- Set the vacuum pickup fixture on the alignment fixture, using the one short dowel pin to locate the pickup fixture. Insert the longer dowel pin into the other side, so that it locates the fixture well (the pin shouldn't go too far into the hole in the alignment fixture, since we want to remove the pickup fixture with minimal problem).
- Engage the vacuum to the pickup fixture