1. PMC monitor PD was T-ed and connected to PSL spare 7 cable.

Since bogus power reporting of PMC transmission monitor has bothered us more than once (https://alog.ligo-wa.caltech.edu/aLOG/index.php?callRep=9300), and since this might be an oscillation of the PD electronics, we T-ed the output of the PD and connected it to "spare 7" cable which goes out to the PSL rack outside.

I connected the cable to Ch.4 of the scope in PSL R2 rack.

When the power (H1:PSL-PWR_PMC_TRANS_OUTPUT) is reported 11.2W, the PD output was measured to be 715mV DC on the scope, with AC RMS of 1.74mV without any noticable oscillation (attached is the scope screen with AC coupling).  Next time it is reporting bogus power you should go to the rack and see how it looks.

2. IO Kentec beam dump

We have found two IO Ketek beam dumps, both 0.75" aperture variety (ABD-3/4), in the cabinet in the PSL ante room. We took one that is to be installed in the HAM2 ceiling viewport in preparation of the 10W operation.

This beam dump is to replace a black glass that is in place now. Ultimately Kentek will be replaced by the final solution once it is manufactured.

We will NOT remove Lexan cover for this viewport until approved by John Worden.

A bigger Kentek (2" aperture, ABD-2) was already installed in IOT2L some time ago. This will be left in place as it's considerably bigger than 0.75" one and thus will run cooler. The final solution will come later than the HAM2 ceiling one, but it will come at some stage.