User name jpchen
Log entry time 18:16:53 on April15,2008
Entry number 232242
keyword=cryotarget cool-down and conditionsWe pretty much completed cool-down of cryotarget. Loop 1 (LH2) is at
20K, 23.8 psi. Fan speed at 36 Hz. HP heater power at ~50 watt. Ready for beam. LD2 is a little high in temperature (26K) and pressure (28psi). Fan speed is at 24 Hz. Since we are not using it for now, I'll leave it as it is until the ESR supply drop to normal (it is dropping from >14K to now 13.8K, and should be ~13.3K). The ESR flow is <12 g/s. We will keep it as it is. Later when ESR becomes stable,
we will get back to normal operation condition (LD2 = 23.4K, fan=36 Hz) and ESR flow to 10g/s.
FIGURE 1
