J. Kissel, S. Koehlenbeck, M. Robinson, J. Warner

The LHO install team (Jim, Mitch) -- who has experience installing in-chamber fiber optic systems -- have reviewed the two options put forth by the SPI team for optical fiber routing from some feedthrus to the future location of the SPI follower breadboard on the -X side wall of the HAM3 ISI using Eddie's mock-ups in D2400103. Both options (WHAM-D8 or WHAM-D5) are "evil" in several (but different) ways but we think the lesser of the two is running the fibers from D5 (the currently blank flange underneath the input arm beam tube on the -X side of HAM3; see D1002874).

In support of this path forward, one of the primary evils with D5 is that access to it is *very* crowded with HEPI hydraulics piping, cable trays, and various other stuff. 

Here I post some pictures of the situation.

Images 5645, 5646, 5647, 5648, 5649, 5650, 5651 show various views looking at HAM3 D5.

Images 5652, 5653, 5654 show the HAM2 optical lever (oplev) transceiver, which is a part of the officially defunct HAM Table Oplev system which -- if removed -- would help clear a major access interference point.