User name R. Michaels
Log entry time 09:16:41 on June20,2004
Entry number 126405
keyword=L-arm dipole woes
07:20 L-arm dipole quenched at full current (~1000 A, p = 3.009 GeV)
It took 20 min for the M3/M4 OverTemp to clear.
Tried to ramp up, got to 300 A and it quenched.
End run 2308, Run 2309 started.
Tried to ramp up again, this time going slowly (10 A increments)
as I've heard Javier did before. This time it reached 240 A
and dropped to zero without any system failure (no quench).
Ramping again ... REALLY slow this time (10 A / minute).
Got to 192 A and lost control -- it drops to zero (no quench).
Called Todd (tech-on-call).
He said he will come in to reset the dipole power supply in the hall.
Unrelated, Q1-RHRS trips at 9:10. We call for access.