WP 13563

Late entry from August 27, 2026

Sheila informed me the HAM3 ISC picomotors were not responding. Verified the picomotor cable was connected to the driver. Verified driver was responsive. The air cabling on HAM3 flange D3 did not match the DCC D1002874 drawing. Recall Keita found the POP QPD connected to the wrong port on flange D3, alog 91409.
We convinced ourselves all the connected cables on the D3 flange (SUS/ISC/SEI/CRS) were connected correctly, all seem to be working. All open ports are spares, ports for the LO1 future installation, or the ISC Picomotors. The picomotor cable was moved from D3-F8 to D3-F7. This means according to Keita’s alog, the QPD cable was originally connected to the picomotors. Sheila verified picomotor were working.

Similar cabling issues were found on the D6 flange, see alog 91226.

The following DCC documentation needs to be updated:
SUS BSC2 HAM3 HAM4 (susb2h34) System Wiring Diagrams D2300383
ISC/SQZ Wiring Diagram for Corner Station D1900511
Flange Layout - H1 Horizontal Access Module 3 (HAM 3) D1002874

As the DCC documentation is out of date, a list of our as-built flange for Flange D3 and D6 is listed below: