Laser Interferometer Power supply was found switched off last night.

James Conway toecutter4ranger at
Tue Mar 29 11:54:13 PDT 2011

Greetings Raith Users:

Please keep an eye out for strange setting on the tool and for starngers
entering the Ebeam Lab.


*Subject:* Comment raith SNF 2011-03-29 11:47:58: laser for LIStage was
found turned off<raith-pcs at>

*From:* jwc at
*Date:* Tue, 29 Mar 2011 11:47:59 -0700

For reasons unknown the laser power supply was found to have been
tripped off manually
sometime late last evening.  Appears someone actuated the switch as it
is a guarded
switch and it was found this morning in the 'open' 'power off ' position.
Upon actuation the laser quickly came up in power and phase locked as expected.

All stage operations are now normal.

*Users are reminded that the Ebeam lab is a restricted access area and
that they are
to confront anyone whom comes into this area that is not a qualified
User on the tools.*

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the raith mailing list