User name jpchen
Log entry time 19:44:40 on March31,2008
Entry number 229235
keyword=Cryotarget cooldown completed. Coolant issue.Completed cooldown both LH2 (loop1) and LD2 (loop2).
When I had them in the normal running conditions (T_H2=19K, T_D2=22K)
we draw about 18 g/s coolant. I raised temperature by 1 degree for both loops, coolant (ESR 15K) flow is 15 g/s with 30-70 watts on each
loop. Dsicussed with Doug and Hall C, for tonight, we will leave it at 15 g/s. Will need to discuss tomorrow.
The operation conditions are:
LH2: 20K, 23 psi, 60 Hz, 50 watts.
LD2: 23K, 24-25 psi, 48 Hz. 35 watts.
ESR flow is 15.3 g/s.
FIGURE 1
FIGURE 2
