Removal, cleaning, and remounting of the piping and mirror cans constituting the optical transport system due to an unexpected discovery of particulate contamination. The source of the contamination has yet to be identified.

Remeasurement of the optical cavity length. We have done a total of three different measurements of the cavity length, and they all agree to better than 100 µm.

The 180º bend magnet (DY) for the west arc (3F region) was installed with its upgraded vacuum chamber. Cross-hairs and a light was added to the vacuum chamber viewer.

The insertable dumps were completed for both the back leg (4F) and east arc (5F) regions. Additional LCW was provided and the SEG blocks were placed over the dumps.

The raster magnets for the straight ahead dump (2G) were installed and used this month during the Gen target irradiation operation.

All SRF cavities were measured for level of microphonics and operation of their HOM filters.

All air core magnets for the straight ahead machine configuration were installed and have been used this month.