User name jpchen
Log entry time 10:47:59 on May 5,2008
Entry number 237151
Followups:
keyword=Adjustment to loop 1/loop 2.Loop 1 (LH2) was not that stable at fan speed of 29 Hz (12%). I made adjustment to increase loop 1 speed. First lowered loop 2 coolant flow, then increased loop 1 coolant flow, kept total flow to be about
the same (10-10.5g/s). Then increase loop 1 fan speed from 12% to 13%
(31.5Hz), the temperature of loop 1 fluctuated significantly, then settled. Increased further to 14%, (34 Hz). it is pretty much stbalized now, and we have enough cooling power, HP heater is ~50 watts now. I also changed loop temperature set point to be 22K to not
have any HP heater fluctuations.
For TO, please do not silence or ignore alarms.
FIGURE 1
