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User name Jin
Log entry time 22:08:58 on February 05, 2009
Entry number 259122
keyword=Target: Stepper motors driving laser 1/4Wave plates are OFF
Since D2n do not use vertical target pumping laser, stepper motors (#1426
& #1423), driving vertical 1/4Wave plates, are disconnected (Their cables
on USB hub are disconnected). The 1/4Wave plates are fixed to give
vertical up direction pumping.
The other pair of stepper motors (#0338 & #1474), controlling transverse
pumping line, are turned off (could be remotely turned on again). The
1/4Wave plates are left for + direction pumping too (+ direction = along
holding field = tranverse - in Hall CS).
Just for record, the power supply to all stepper motors are also turned
off. To recover, access hareboot12 and turn on "stepper motors"
A copy of this log entry has been emailed to: yqiang, jpchen