[Alex, Daniel]

We started assembling the SNSPD Dewer Vacuum System Components, including the pressure gauge, the pressure relief valve, two manual valves, and a blank that can be used for leak checking or an RGA in the future. We still need to connect the vacuum hose to the SNSPD Dewer and to the KF50 to CF 4.5" Adaptor Flange and attach this flange to the Agilent Turbo Pump.

While threading in the screws to attach the Agilent FRG702 CF 2.75" Pressure Gauge to the 2.75" CF to KF16 Adapter, we accidentally pushed the included magnet away with the screws because the magnet is so close to the flange. We were able to move the magnet mostly back into place, but in the process we magnetized a 7 mm wrench used to loosen the screw that holds a clip to secure the magnet.

We might be able to use 1.25" long screws in the future to avoid this problem, but they seems a bit too short. 1.25" long screws might be the standard for CF 2.75" Flanges (with through holes on both flanges). 1.375" long screws are a possibility, but the only place I found 12-point head, 1.375" long screws was Kurt J Lesker for $37.35 each. At least these are silver plated.

Moving the magnet might be required for installing the pressure gauge into a tapped flange.