Possibly mislabeled shots in d3d_*_100.txt? #1
Description
Hi,
going through the D3D logbook it seems some shots that have been labelled disruptive in d3d_disrupt_100.txt appear to have died from other reasons than a disruption.
Most of the shots have duration less than 1s and would probably be removed by pre-processing. But it would be good to take a closer look to avoid mis-labeling.
Shots I found suspicious, based on short shot duration:
167515, 167548, 168439, 168440, 168441, 168442, 168443, 168444, 168450, 168483, 168484, 168485, 168486, 168487, 168488, 168490, 168491, 168500
168442
From the logbook - Died due to a presumed carbon dust mote.
Corresponding logbook entry:
Jan 20 2017 10:34:32:393AM |
-- | --
Repeat. Add ECH -40->20msResult: Good. Got 3 gyros. ~ 800 kA up to 800ms before died. Density control good. maybe UFO?
168442 | hyatt | PHYSICS_OPERATOR | Jan 20 2017 10:59:31:757AM |
-- | -- | -- | -- | --
RepeatResult: OK, a much better pulse. Lasts to appx 800 ms, enough for lots ofEFIT01 slices. Still dies of density skyrocketing, but this time due to apresumed carbon dust mote. Oxy is relatively loww considering the no-bakecondition. We do have a lot of carbon but that's expected after tielinstallation (SAS). We are getting some gyros' short pulses at t=0, but no auxheating after that.
[168442](http://nomos.gat.com/DIII-D/physics/summaries/summary.php?run=20170120#168442) hyatt PHYSICS_OPERATOR Jan 20 2017 10:59:31:757AM
Repeat
Result: OK, a much better pulse. Lasts to appx 800 ms, enough for lots of
EFIT01 slices. Still dies of density skyrocketing, but this time due to a
presumed carbon dust mote. Oxy is relatively loww considering the no-bake
condition. We do have a lot of carbon but that's expected after tiel
installation (SAS). We are getting some gyros' short pulses at t=0, but no aux
heating after that.
168443
Logbook entry:
168443 | eidietis | PHYSICS_OPERATOR | Jan 20 2017 10:57:17:530AM |
-- | -- | -- | -- | --
Repeat.3 gyros.Result: Once again died at ~ 0.75s. Density is staying well below target... why?realized no EFC. Appear to lock.
[168443](http://nomos.gat.com/DIII-D/physics/summaries/summary.php?run=20170120#168443) eidietis PHYSICS_OPERATOR Jan 20 2017 10:57:17:530AM
Repeat.
3 gyros.
Result: Once again died at ~ 0.75s. Density is staying well below target... why?realized no EFC. Appear to lock.
168443 | eidietis | PHYSICS_OPERATOR | Jan 20 2017 11:10:06:013AM |
-- | -- | -- | -- | --
Turn on Icoil EFCResult: No plasma. Machine operator error caused T1/T2 to kill shot early.
[168443](http://nomos.gat.com/DIII-D/physics/summaries/summary.php?run=20170120#168443) eidietis PHYSICS_OPERATOR Jan 20 2017 11:10:06:013AM
Turn on Icoil EFC
Result: No plasma. Machine operator error caused T1/T2 to kill shot early.
168443 | hyatt | PHYSICS_OPERATOR | Jan 20 2017 11:15:17:610AM |
-- | -- | -- | -- | --
RepeatResult: OK, but a slight step back. Lasts to appx 800 ms, enough for lots ofEFIT01 slices. Still dies of density skyrocketing, but this time due to apresumed carbon dust mote. Oxy is relatively loww considering the no-bakecondition. We do have a lot of carbon but that's expected after tielinstallation (SAS). We are getting some gyros' short pulses at t=0, but no auxheating after that.
[168443](http://nomos.gat.com/DIII-D/physics/summaries/summary.php?run=20170120#168443) hyatt PHYSICS_OPERATOR Jan 20 2017 11:15:17:610AM
Repeat
Result: OK, but a slight step back. Lasts to appx 800 ms, enough for lots of
EFIT01 slices. Still dies of density skyrocketing, but this time due to a
presumed carbon dust mote. Oxy is relatively loww considering the no-bake
condition. We do have a lot of carbon but that's expected after tiel
installation (SAS). We are getting some gyros' short pulses at t=0, but no aux
heating after that.