(Sheila, Alexa)

We measured the fiber coming out of the single-mode optical fiber at several locations. During the measurements the ref cav trans PD is reading .46 volts.

1.7mW from the PSL to the input of the ALS Fiber Distribution Chassis on ISCR1

127uW @ x-ouput of ALS Fiber Distribution Chassis

110uW @ MSR input

80uW @ MSR output

20uW @ EX

In comparison to alog 6341, we had 7.7mW from the PSL with a ref cav trans of 2 volts. So if we align the ref cav we will gain a factor of 4 power.  There was also only a 50% loss in power between the MSR output and EY in comparison to the 75% loss we are seeing. Hopefully we can gain some more power by cleaning the fiber cable.