Just completed the cooldown. It took a little longer than usual. Needed more coolant to cool down both loops. Seems loop1 took significantly more coolant, which probably is due the fact that this is desigend for 4K coolant He loop, not the most efficient loop for LH2. We have LH2 in loop 1 at 19K, 30 psia, LD2 in loop 2 at 23 K, 20 psia. Both have high power heater @ ~100 watts. JT settings are 53% fro loop 1 and 25% for loop 2, total flow is 19 g/s.
I also have all the alarms set.
Loop 2 only one temperature sensor working, two not working. All 3 work for loop 1. Supply temperature is 15.4K (decreasing) and return is 23.7K.