Reports until 07:38, Friday 22 September 2017
H1 PSL (PSL)
peter.king@LIGO.ORG - posted 07:38, Friday 22 September 2017 (38745)
DBB scan
Without touching the alignment in to the diagnostic breadboard, a scan of the front end laser was done;
partly to see what the status of the diagnostic breadboard is after being dormant for such a long time.

    The mode scan implies that the output of the front end has 61% in higher order modes.  Something we
know not to be true.  So clearly some alignment work into the diagnostic breadboard is required (this
is not a surprise).

    It should also be noted that whilst the scan was conducted the PMC PZT monitor flashed red.  But the
take away news is that the diagnostic breadboard still works but needs a service call.
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