STS2 RF Generator Overheating -- Use Forward Power Mode

Jim McVittie mcvittie at cis.Stanford.EDU
Fri Apr 2 16:49:13 PDT 2010

STS2 Users, 

The rf generator for the coil appears to be overheating. The symptom is
that the matching networking stops being able to get a reasonable match
after 10 min or so into a run. You can see the problem if you trace the
forward and reflected power during a run. For now the solution is to keep
the max power at or below 2500W to set the coil generator to "forward"
mode. On Monday, I will looking at the generator cooling to see if it is
the cause of the problem.

   Thanks, Jim 
James (Jim) P. McVittie, Ph.D.	        Sr. Research Scientist 
Paul G. Allen Building                  Electrical Engineering
Stanford Nanofabrication Facility       jmcvittie at
Stanford University             	Office: (650) 725-3640
Rm. 336X, 330 Serra Mall		Lab: (650) 721-6834
Stanford, CA 94305-4075			Fax: (650) 723-4659 

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