User name jpchen
Log entry time 14:43:10 on July21,2006
Entry number 174726
keyword=target: heat load limit (A+C) =25 g/s
Reduced heater to about 30 W on both loops. ESR flow is around 8.5-8.7 g/s.
Due to the limited ESR capacity. The total coolant for both halls A and C should be limited 25 g/s (can reach 25 g/s, but not exceed).
When Hall C running maximum current of 60 uA on their 20 cm LH2
target, it will take about 16 g/s. So when we are not using beam on cryotarget, we should keep our heat laod below 9 g/s. Typically if we
keep HP heater to about 30 W and fan speed to 48 Hz, it should be OK.
When we need to take beam on cryotarget (both LD2 and LH2 with Pb), we should coordinate with Hall C to be sure to not exceed the 25g/s