Gerardo, Jordan, Travis, Randy, Janos

Today between 10 am and 2 pm both the Y+ and Y- HAM1 doors have been installed. The installation went smoothly, no issues were found.
A valve on the new interlock gauge-assembly was opened, and the HAM1 volume will be purged overnight. This is to clean the in-vacuum surfaces before pumpdown, resulting in lower gas load and therefore faster pumpdown.
After the door installation, the pumpdown of the joint HAM1/HAM2 Annulus volumes have been started. 2 turbo/pumping cart systems are pumping the volume, they are standing next to HAM1 and HAM2 - see attached photo.

Please do not move the pumping carts, as it can result in immediate damage in the turbo pumps. If you still need to do any activities which need these pumping carts to be moved, please talk to vacuum team members first!