KAGRA MIF Meeting 2012/10/23
2012/10/23 13:30 - 14:30 Participants: I don't remember
Fast shutter
How to trigger the shutter ? => Probably the DC signal from the PD itself.
How the trigger signal is sent ? => Analog wires. No RTS involved. However, RTS should be able to reset the shutter.
What is the requirement for the speed ? => First, we have to figure out how much power will fall on to the PD in the worst case. Y. Aso's bet is twice the input laser power ~ 150W. Then the amount of the energy deposited on the PD can be calculated by multiplying the power with the shutter's closing time. We need the damage threshold of the PD in terms of the energy.