User name jpchen
Log entry time 13:03:17 on December17,2007
Entry number 221649
keyword=Target: Cooled down loop 2 last night. Now reduced loop 2 coolant to allwo loop 1 back to normalThis is to summarize target activities since yesterday evening (since
Halog was unavailable until now).
I cooled down loop 2 for loop 2 Pb target test, and reduced coolant flow to loop 1 yesterday evening (~around 11 pm)
Loop 1 HP heater was at 50 watts. Loop 2 temperature at 7 K, pressure
~ 48 psi, HP heater was ~100 watts, fan at 48 Hz.
Coolant flow was ~ 18 g/s.
This morning, I did the reverse process: increased coolant flow to loop 1and reduced coolant flow to loop 2.
Loop 1 is back to slightly aboive 200 Watts.
Loop 2 HP heater is off. temeprature is ~ 7K. Fan speed at 24 Hz.
FIGURE 1
FIGURE 2
