Session aimBreakdown improvements and assess maximum plasma current
Session day2025-04-22Operatorrhenriques
Session IDISTTOK_20250422_1Coordinatorrhenriques

Shot Time Operator Iplasma(kA) n(1018m-3) Duration (ms) Pre/post shot comments
524522025-04-22 17:04:54.678rhenriques3.456.426Repeat with further prefill pressure increase (was 1.27e-4 mBar) | BD much later Ip rise much slower than in previous pulse, prefill pressure was 1.46e-4 mBar
524512025-04-22 16:57:09.709rhenriques3.446.3626Repeat with higher prefill pressure (was 1.07e-4 mBar) | BD much later, early Ip rise much slower
524502025-04-22 16:51:57.651rhenriques4.3726Repeat with increased prefill pressure (was 8.8e-5 mBar in previous pulse) | prefill was 1.07e-4 mBar, BD starts much later and Ip rise seems to be a bit slower than previous pulse
524492025-04-22 16:47:13.846rhenriques4.57.526Repeat with highe prefill pressue (was 6.6e-5 mBar in previous pulse) | BD seems to happens at same time (roughly) but Ip rise is slower
524482025-04-22 16:42:56.515rhenriques58.2626Repeat one more for statistics | BD mostly the same
524472025-04-22 16:38:44.486rhenriques84.926Repeat for statistics | mostly the same but pulse ended before the previous one
524462025-04-22 16:34:12.182rhenriques58.326Repeat with increased Ip, no changes to BD for statistcs | No switching on Primary (full voltage throughout the pulse)
524452025-04-22 16:20:57.919rhenriques4.67.526Repeat with further changes on Bh for BD (now at -67.38 A) and increasing Ip | BD spot ON, very good! However there is plasma attempting to start before primary inversion, Ip always decreasing
524442025-04-22 16:09:58.209rhenriques4.26.526Repeat with further changes on Bh for BD (now at -64.45 A, was -61.52) and increasing Ip | BD seems to happen at same time but Ip increases faster at the begining, Ip same behaviour as in previous
524432025-04-22 15:41:51.698rhenriques3.86.526Repeat with Bh changes in opposite direction and increasing Ip | BD happens earlier at ~5.2 ms, Ip starts at 3.8 kA but it is always decaying throughout the pulse
524422025-04-22 15:30:23.508rhenriques3.4626Repeat | BD happens much later
524412025-04-22 15:26:17.671rhenriques000Repeat setting Bv for BD to -143.56 A, increasing Ip and changing Bh for BD (-55.66 A) to search for optimization | Contrller failed, no plasma
524402025-04-22 15:11:45.917rhenriques3.25.526Repeat with Bv for BD changed to -125 A and Bh for flattop changed to see effect on position | BD happens mostly at same instant
524392025-04-22 14:59:56.147rhenriques3.25.526Repeat with increased Ip, changes on Bv for BD (-175 A) | BD happens at same time
524382025-04-22 14:26:44.726rhenriques2.8526Repeat with changes on BV for BD (back to -150 A and shifted 0.25 ms ealier), Bv changed for positioning (going into opposite direction) | BD happens earlier (~5.4 ms), position does not seem changing
524372025-04-22 14:17:11.806rhenriques2.8526Repeat with same Ip, but adjustments on Bv for positioning and Bv for BD (-125 A) | BD starts slightly later, position still no centered
524362025-04-22 14:07:00.991rhenriques2.8526Repeat with increased Ip, changes on Bv for BD (-150 A) | BD starts earlier (at ~5.6 ms), position still drifiting away
524352025-04-22 13:51:47.053rhenriques2.64.426Repeat with increased Ip, changes on Bv for BD (-175 A) and adjustments on Bv for flattop positioning | BD happens earlier (at ~6 ms), position still drifiting and begining of cycle
524342025-04-22 13:43:20.065rhenriques2.23.326Repeat with further changes on Bv for BD and adjusting Bv for flattop for positioning | BD happening mostly at same time as in previous, position seems to be sliglyt better
524332025-04-22 13:31:54.111rhenriques2.23.426Repeat with changes on Bv for BD and higher Ip | BD happens later, negative semi-cycle is trying to start
524322025-04-22 13:23:28.854rhenriques22.926Repeat with increased Ip and changed Bv for BD and trying to get the inversion working | BD happens at same time as in previous, still no neg. cycle
524312025-04-22 13:07:59.719rhenriques1.82.726Repeat with Bv for BD changes in opposite direction and some adjustments of Bv end of flattop to improve inversion | BD happened earlier than in previous pulse, still no negative semi-cycle
524302025-04-22 12:54:45.248rhenriques1.82.826Repeat with further increase of plasma current and adjustments of Bv for BD | BD happened earlier a little bit, negative semi-cycle failed
524292025-04-22 12:41:41.932rhenriques1.62.926Repeat with further changes on Bv for BD, start increasing Ip (slowly) | BD started earlier, plasma seems to be reasonably centered
524282025-04-22 11:06:59.217rhenriques1.42.926Repeat reverting Bh for BD and adjusting for flattop position, changing Bv for BD | BD still hapening at same instant mainly, position seems to be reasonably centred but density still decays a lot
524272025-04-22 10:55:45.424rhenriques1.42.926Repeat with further adjustments | BD happens mostly at same time as in previous, position still drifts off
524262025-04-22 10:46:21.521rhenriques1.42.826Repeat with further decrease of Bh for BD and Bv channged to opposite direction | BD happens earlier, but prefill is also higher. Position is going into the right direction
524252025-04-22 10:38:41.761rhenriques1.42.726Repeat with Bh changes in opposite direction and exagerated changes on Bv for flattop of Ip>0 | BD happened earlier, position is still off
524242025-04-22 10:30:38.071rhenriques1.42.626Repeat with changes on Bh for BD | BD happens significantly later, position still not changing
524232025-04-22 10:23:14.012rhenriques1.42.726Repeat with further adjustments | BD no clear changes, position still not centred
524222025-04-22 10:11:36.905rhenriques1.42.726Repeat with further adjustments | BD happens a bit later
524212025-04-22 10:03:24.951rhenriques1.42.926Repeat changing Bv of BD and Ip>0 flattop for better positioning | BD happens slightly earlier but still at the same ballpark
524202025-04-22 09:55:13.088rhenriques1.42.826Straight repeat | BD later than previous, premag reaches requested current
524192025-04-22 09:49:55.244rhenriques1.42.526Repeat, this time only with 2 semi-cycles | BD happens earlier than the two previous pulses, premag reaches requested current
524182025-04-22 08:46:17.778rhenriques1.43.3526Straight repeat hoping premag is the same as in reference | happened slightly later than previous, premag is still high compared with reference
524172025-04-22 08:42:13.718rhenriques1.43.126Repeat with adjustments on Bv for breakdown of Ip>0 | BD happens later than previous, premag was quite different than reference
524162025-04-22 08:37:50.026rhenriques1.43.326Straight repeat | BD happens earlier than previous but still a bit later than reference
524152025-04-22 08:31:33.866rhenriques1.43.426Straight repeat | BD happens later than previous, but premas is significantly different
524142025-04-22 08:26:28.717rhenriques1.43.326Continue with breakdown adjustments, repeat last pulse of previous session for reference, 52412 | BD happens much later than in reference, prefill was a bit higher on this one
524132025-04-22 08:18:11.225rhenriques000Dryrun (file: dryrun_standard_2025_04_04_52149.cfg) no TF | PF currents OK