Shift Start:
holding field: 0°
target HWP: out
lasers: 4,6,7 on
Target: Pol 3He
Cell: Priapus
Beam: waiting for beam
At start of shift, waiting for beam for harp/OTR/spot etc.
checks after beam energy change... empty target position.
Beam now looks good.
18:25 Ask for beam off, go to reference
cell position. Ask for 10 µA.
18:38 Finished 10 min. run; now fill reference cell
with 140 psig N2 and start another 10 minute run,
this time at 2 µA.
18:55 Finished nitrogen run; ask for target motion
to go to empty cell so we can do a Moller measurement.
Meanwhile, vent and evacuate Reference cell.
21:40 Moller measurement completed. Dp spot++ check.
21:53 Move to 3He cell
21:58 do NMR measurement in 3He position.
21:58 NMR measurement done, lasers on, but
we are in the 3He cell position, not the pickup coils
position (see HAlog entry
107699).
Result: NMR polarization = 39.28%
Leave target as/is, ask for beam back.
23:30 Turn off beam to rotate to 270°. Turn off
Lasers 4,6,7. Start rotation 0° to 270°.
23:34 Turn on Laser 1
23:35 Turn on Laser 2
23:36 Turn on Laser 3
Shift End:
holding field: 270 °
target HWP: out
lasers: transverse: 1,2,3 ON
Target: Pol 3He
Cell: Priapus
Beam: 3.0 µA
hand off to owl shift, go home to sleep...