(Jordan, Travis, Richard, Filiberto, Randy, Gerardo)

Corner pumpdown started Thursday afternoon, around 4:40 pm local time.
We setup the twin mobile ISP-1000 scroll pump stations at the YBM turbo station, we chose this area due to the real estate available, the other 2 stations are a bit crowded.  After setting up all of the required equipment the pumpdown was started with procedure E2300169, to setup the turbo pump unit for the pumpdown, then Jordan and Filiberto covered procedure M1300464 to make sure all high voltage DC power supplies were off, then continued following E2300443 to start the pumpdown with the ISP-1000 scroll pumps through the YBM turbo pump.  Pumpdown was done for about 2 hours taking us down to 340 Torr.  The pumpdown was stopped at 7:02 pm local time for the night.

No issues to report during the startup of the pumpdown, however something to note is that during the blow down of the vacuum envelope the system was not pressurized, last minute work on the different chambers did not allowed to pressurize the envelope.