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User name Yi Qiang
Log entry time 02:01:57 on February 08, 2009
Entry number 259673
keyword=Oven temperature stablizedThe PI parameters I used for the 3 laser pumping since this afternoon
were 300C for prop band and 600s for Rest. However, after I turned off
the FAP laser tonight, the oven temperature started to oscillate by about
a couple of degrees since 22:00, I then started to tweak the PI
parameters:300C->400C->500C, 600s->900s->1000s. Right after 00:00, the
temperature had a huge drop. I realized that the prop gain may be too
strong and reset time may be too short, so I adjusted them to 500C and
200s, and finally the temperature stabilized at around 02:00. Hope this
will last long...
Figure 1
