08:53 - Move beam positions at Y by +0.5 mm, slight improvement in
spot (middle of above link)
09:03 - Decreased slow raster from 2.0 to 1.8 cm, improved, but still
a diffuse area of larger rate (bottom of above link)
09:15 - Ryan noticed T2 and T4 were prescaled to 0, seems to have
been that way since last night, fixed
10:40 - Noticed beam energy drifting
quite a bit with no Hall C energy lock, Hall C is coming back on though.
Yves follows up that we could set up a witness beam to lock on
11:10 - the spot_3 looks really crappy!!!! Seems to be missing some
acceptance.
11:18 - Beam down for short while for Hall C tuning
11:40 - MCC tuned the beam, checking the centering on the hole, beam
moved 1 mm in Y to center the hole (we are basically back to the
positions on the whiteboard)
12:04 - Having trouble moving the target, Josh called in to fix
(requires access to Hall)
12:30 - Getting a survey of the Hall to go to Controlled Access so
Harp can be fixed too
13:20 - Can't get harp people in, so we will go back to beam permit
13:25 - Beam down due to RF issue
14:05 - Beam back, but we are in Controlled access and someone is
going in to look at the harp
15:58 - Several people went into the hall to diagnose the harp issue,
not sure what the conclusions are, but they are wrapping up their work
Runs:
3689/22718/40753 - production
3690/22719/40754 - production
3691/22720/40755 - production, Y positions changed by +0.5 mm
40756 - production, slow raster decreased by 2 mm
3692/22721-22722/40757 - production, changed some beam positions
toward end of run
3693/22723/40758 - production, IPM1h01X at -2 (was at 0)
3694/22724/40759 - production
3695/22725/40760 - production, IPM1H01X at 0
3696/22726/40761 - checking centering on Carbon hole
3697/22727/40762 - checking centering on Carbon hole