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User name jpchen
Log entry time 23:25:52 on November 5,2009
Entry number 297687
keyword=High current/high power testPerformed high current (high power) test on LD2 target.
Initial HP heater power is over 1250 watts. Increased beam current to 20, 40, 60 80 and 85 uA. MCC could not go above 85 uA.
Here are the correspondence between power and current (roughly):
current (uA) 0 20 40 60 80 85
HP heater (watts) >1250 ~1100 ~900 ~700 ~500 ~400.
T1 (kHz) 0 46-50 77 103 120
Also stripe charted ion chambers and LHRS scaler (T1) readings (with magnets tripped). They behaved reasonablly.
There should be plenty of cooling power and HP power heater power, even for 120 uA.
FIGURE 1
