Reports 1-1 of 1 Clear search Modify search
AdV-COM (AdV commissioning (1st part) )
ruggi - 10:47 Wednesday 14 November 2018 (43572) Print this report
Comment to unplugging WE coils (43542)

I made a mistake in the evaluation of P4 differential noise, because I was assuming the impedance in LN1 to be 228 ohm as for P6, but in fact it is 128 ohm. In fig 1 the new evaluation of the differential noise (in agreement with the lab measurement).

The conclusion about the limiting noise before unplugging the coils does not change: differential noise can explain the excess noise. This is shown in fig 2: adding in quadrature the differential noise to the residual (unplugged) noise, we obtain the'plugged' noise.

The increased series resistor should put the differential noise at a negligible level.

Images attached to this comment
Search Help
×

Warning

×