Operator: kdow
Running polarized deuterium. Good runs 14907-14909, 14912-14915, 14917.
Ligit is still reasonable, about 9.5E-8. C1 Dissoc. pressure has not gone above 9.2 Torr yet. So the nozzle isn't clogged. Ernie Ihloff asked me to increase the O2 flow a bit (to 0.07 on the readback) to improve the dissociation fraction. The nozzle will clog faster, but we expect to warm the nozzle and change out the dissociator tube tomorrow anyhow.
Two trips of the LQ33&35 power supply cost some down time.
Most of the HV trips have been LG0U. I've increased WC R24 to 3825 V and have had no trips.
No shift's worth of runs has finished crunching, so no polarization updates. The 4/2 A and B shifts (which Doug started crunching at 1 am today) have one or two runs left to finish, so results will be available this evening.
Since we still have good ABS flow, and Jan isn't desperate to tune the beam, we'll probably keep running on deuterium for a while, until the nozzle freezes or it's time to warm up the nozzle (and run empty after that).
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST