I have been hesitating to post this result as I am getting a calculation which doesn't agree with the measurement. (Also this is kind of a side track of the PRMI commissioning)

I did a back of envelope calculation of how large Michelson optical gain we would get at REFLAIR_A_RF45 with PRM misalgined. Currently, I am getting a dubious estimation which is 4 times smaller than what was measured on 31st of January (see alog 9698). I expected it to be 1.7e9 W/m while the measurement claimed 6.8e9 W/m. For those who are insterested in the detail, I am attaching my caculation.

Any suggestion is welcom. As usual, there must be a stupid reason. Thank you.