Session aimPlasma pulses for conditioning and then special dryrun with Primary only for Magnetics pickup coils
Session day2025-04-17Operatorrhenriques
Session IDISTTOK_20250417_1Coordinatorrhenriques

Shot Time Operator Iplasma(kA) n(1018m-3) Duration (ms) Pre/post shot comments
523752025-04-17 14:19:01.102rhenriques000Repeat 50 A (with 60 V) | Good
523742025-04-17 14:13:31.128rhenriques000Repeat requesting 200 A (still with 100 V) | Good
523732025-04-17 14:09:05.347rhenriques000Repeat requesting 100 A (still with 80 V) | Good
523722025-04-17 13:56:36.742rhenriques000Repeat (150 A) with increased capacitor bank voltage to 80 V (was 60 V) | Good
523712025-04-17 13:44:27.274rhenriques000Repeat with 500 ms long | OK, good but Primary voltage not enought to guarantee full length of waveform
523702025-04-17 13:34:27.511rhenriques000Repeat with lower resistance at the secondary circuit | Good, current raises much faster
523692025-04-17 13:24:10.513rhenriques000Special dryrun with Primary current only for calibration and test of Magnetic pickup coils, short waveform for initial testing (100 ms only), repeat 52344 | Never reach requested current
523682025-04-17 11:17:06.008rhenriques1.33.426Repeat with 14 cycles instead of 10 | 1 cycle failed and transition to Ip>0 is still not good
523672025-04-17 11:11:28.901rhenriques1.33.126Repeat extending to 26 ms and tweaking Bv of Ip<0 back to improve transitions | one cycle failed
523662025-04-17 10:28:01.378rhenriques1.33.424Repeat with adjustments on Bv of Ip<0 for better plasma position | some cycles still failed, position is a bit better
523652025-04-17 10:09:44.88rhenriques1.3324Repeat with adjustments on Bv of Ip<0 and extending cycle length to 24 ms | better, primary current does not saturate
523642025-04-17 09:55:18.878rhenriques1.33.222Straight repeat | different results than previous
523632025-04-17 09:48:33.045rhenriques1.33.4522Repeat with changes on Bv for Ip<0, trying to improve transition to Ip>0 | slightly better but still nees improvements
523622025-04-17 09:37:57.358rhenriques1.33.322Repeat with changes on Bv for Ip>0, to impove transitions to Ip<0 | Beter transition to Ip<0 just after 1st semi-cycle, transition to Ip>0 not so successful
523612025-04-17 09:27:01.156rhenriques1.33.722Repeat with small change on Bv for Ip<0 aiming to improve transitions to Ip>0 | All positive and only the 2 last negative
523602025-04-17 09:15:54.062rhenriques1.33.222Straight repeat | Same result
523592025-04-17 08:59:33.55rhenriques1.32.8722Repeat extending cycle length to 22 ms and correcting position for negeative cycles | Iron core did not saturate, 1st positive and then only negative semi-cycles
523582025-04-17 08:42:41.821rhenriques1.33.920Going back to low current and long pulses for conditioning, repeat 52340 aiming on getting cycles longer (20 ms) | Iron core does not saturate, negative cycles seems to be quite off centered
523572025-04-17 08:30:01.824rhenriques-4.36.425Repeat just for comparison | Similar results as in previous pulse
523562025-04-17 08:19:15.482rhenriques-4.57.325Repeat | Not too bad, iron core saturates on the positive cycles and the negative ones are short-lived
523552025-04-17 08:11:48.833rhenriques000Repeat 46241 (but with fewer cycles 40 -> 10), plasma is now full feedback controlled with magnetic pickup coils | Error on the configuration (PS TTY addresses were not loaded correctly), no plasma
523542025-04-17 08:01:00.259rhenriques1.3317Repeat | 9 semi-cycles failed (all the positive ones)
523532025-04-17 07:54:57.162rhenriques1.3417Straight repeat | 8 semi-cycles failed all positive
523522025-04-17 07:49:27.038rhenriques1.3417Repeat 52332 as starting point and for reference comparison | 5 semi-cycles failed (all negative)
523512025-04-17 07:39:08.668rhenriques000Repeat with primary voltage (capacitor bank) back to nominal values ~260 V | Good
523502025-04-17 07:31:15.497rhenriques000Dryrun (file: dryrun_standard_2025_04_04_52149.cfg) no TF, PF only, Primary with lower voltage ~60 V | OK, primary current lower than usual, as expected