[Jeff, Daniel]

We performed a rate of rise test for the Laser Filter Cavity (LFC) to determine the outgassing/leak rate (it's hard to experimentally differentiate without a bakeout or measurment over time). I turned off the Ion Pump and the pressure rose from 2.2E-7 Torr to 1.5E-6 Torr in 3 minutes from the ion pump releasing some gas. The pressure then rose linearly at 6E-10 Torr/s. Assuming the volume is ~33 liters, this gives a leak rate + outgassing of 2.7E-8 mbar*L/s. The surface area is around 1 m^2 = 1E4 cm^2. Assuming the leak rate is negligible, the desorption rate is 3E-12 L*mbar/(cm^2*s), which is excellent (almost unbelivable). There are calculations that can be made from this data to access the performance of the vacuum pumps. I might do that later. See below for the raw data and graphs.