| Miniproposals | ||||||||||
|
| Operators | |
| Session leader(s): | Steve Wukitch |
| Physics operator(s): | Jim Irby |
| Engineering operator(s): | Bill Cochran,Gary Dekow,Bill Byford |
| Engineering Operator Run Comment |
| SL:Irby EO::Byford/Parkin Supp0ort of J-Port Conditioning MP215 |
| Session Leader Plans |
| Physics Operators Plans |
| Session Leader Summaries |
| Entered: Jul 7 2004 03:49:26:460PM |
| Author: To Be Determined |
| Run: J-Port Conditioning MP215 Engineering setup: ECDC in D2 at 2.e-4 Torr overnight prior to run. We will require ECDC in D2 between shots Power systems as on 1010619010 Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 30 psi of D2 Hybrid DISABLED (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with 30 psi of He Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: Transmitters 1-4 in run-on by 07:15 ------------------------------------------------------------------------------- Vacuum testing prior to run 1686-1689 J4 was at higher power than J3 into vacuum 1690 ~equal power in J3 and J4 1691 0.13 pi from JVX probes 50 deg -0.07 pi from V2-V3 probes 1692 0.03 pi from JVX probes 30 deg 0.03 pi from V2-V3 probes 1693 0.03 pi from JVX probes 0.03 pi from V2-V3 probes 1694 -0.21 pi from JVX probes 0 deg 0.29 pi from V2-V3 probes 1695 0.21 pi from JVX probes 80 deg -0.15 pi from V2-V3 probes 1696 1 pi from JVX probes 210 deg -1 pi from V2-V3 probes 1697 0.03 pi from JVX probes 30 deg J3 and J4 staggered 0.03 pi from V2-V3 probes E-port conditioning 1687-1698 34 kV on final pulse D-port testing 1695 fast data shows an arc - need to track this down plasma operation 001 dud 002 BT = 5.3 T, Ip~1.0 MA E: [1.18,1.49] sec @ 0.75 MW J: [0.59,1.49] sec @ 1 MW Result: plasma E:[1.18,1.49] sec @ 0.75 MW J:[0.59,1.05] sec @ 1 MW, 10 retries 003 dud 004 fizzle 005 BT = 5.3 T, Ip~1.0 MA E: [1.18,1.49] sec @ 0.75 MW J: [0.59,1.49] sec @ 1.5 MW Result: plasma E:[1.18-1.49] sec @ 0.75 MW J:[0.59,1.0] sec @ 1.5 MW, 10 retries correlated ~0.8 sec fault with optical monitor signal -fault indicator reported J4 006 BT = 5.3 T, Ip~1.0 MA E: [1.18,1.49] sec @ 0.75 MW J: [0.59,1.49] sec @ 1.5 MW Result: plasma E:[1.18-1.49] sec @ 0.75 MW J:[0.59,1.0] sec @ 1.5 MW, 10 retries nice neutron spike ~0.7 sec 007 Request: D- port off E - port on from 1.18 - 1.49 sec @ 1.0 MW J3 & J4 on from 0.59 - 1.49 sec @ 1.0 MW each B-t = 5.3 T, I_p = 1.0 MA Result: Plasma E - port ran without trips J3 and J4 had multiple trips Action: Take shot again - do not re-tune notes: examining fast data and optical monitor, arc is detected 0.859 sec optical monitor correlates with arc detect on #4 008 009 010 Request: Turn on all thre Xmtr's simultaneously E - port on from 0.59 - 1.49 sec @ 1.0 MW J3 & J4 on from 0.59 - 1.49 sec @ 1.0 MW each B-t = 5.3 T, I_p = 1.0 MA Result: E - port ran without trips J3 and J4 tripped and stayed off Action: Move E - port turn on back to 1.18 sec 011 fizzle 012 BT = 5.3T, Ip~ 1.0 MA, nl_04~ 1 x10^20 m^-2 Request: D: 0 MW [,] sec E: 1.0 MW [1.17,1.5] sec J: 2.0 MW [0.6,1.5] sec Result: D: Off E: Ran without trips J: Ran well, only a few trips Next Shot: Increase J - port powe next shot 013 BT = 5.3T, Ip~ 1.0 MA, nl_04~ 1x10^20 m^-2 Request: D: Off [,] sec E: 1.5 MW [1.28,1.5] sec J: 2.5 MW [0.6,1.5] sec Result: D: Off E: 1.5 MW [1.28,1.5] sec J: 2.5 MW Multiple trips Next Shot: Repeat 014 BT = 5.3 T, Ip~ 1.0MA, nl_04~1x10^20 m^-2 Request: D: Off [,] sec E: 1.5 [1.28,1.5] sec J: 2.5 [0.6,1.5] sec Result: D: Off E: Ran with one trip J: Multiple trips Next Shot: Ramp up J-port power 015 fizzle 016 breaker 017 BT = 5.3T, Ip~ 1.0MA, nl_04~1 x10^20 m^-2 Request: D: Off [,] sec E: 1.5 MW [1.28,1.5] sec J: 2.5 MW [0.6,1.5] sec Result: Disruption at 1.04 sec D: Off E: Plasma terminated before E turned on J: Power ramped up nicely and then multiple trips at H-mode transition Next Shot: Take shot again 018 BT = 5.3T, Ip~ 1.0 MA, nl_04~1x10^20 m^-2 Request: D: Off [,] sec E: 1.5 MW [1.28,1.5] sec J: 2.5 MW [0.6,1.5] sec Result: D: Off E: Ran through without tripping J: Power ramped to 2.4 MW and tripped out at H-mode transition Next Shot: Go to inner limited discharge to prevent H-mode transition 019 BT = 5.3T, Ip~ 1.0 MA, nl_04~1 x10^20 m^-2 Inner wall limited plasma Request: D: Off [,] sec E: 1.5 MW [1.28,1.5] sec J: 2.5 MW [0.6,1.5] sec Result: J - port ran longer before trips D: Off E: Ran through without trips J: Ran longer to 1.13 sec and then had multiple trips Next Shot: Shut off E - port 020 021 BT = 5.3T, Ip~ 1.0MA, nl_04~1x10^20 m^-2 Inner limited discharge Request: D: Off [,] sec E: Off [,] sec J: 2.5 MW [0.6,1.5] sec Notch up J - port power to 2.8 MW at 1.25 sec Result: D: Off E: Off J: Ran to 1.0 sec (2.5 MW) and then suffered multiple trips Next Shot: End of run Summary: Before the run, J-port was conditioned to 32 kV and then was operated into plasma. D-port was tested into vacuum and arcing was detected at relatively low voltage. This system was then shutdown. J-port reached 2.5 MW without significant RF-plasma edge interaction at the antenna corners. However, some interaction was observed on a couple of discharges (018 and 019) on the K-side of the septum at the midplane. Comparing the faults with the optical monitor, we conclude that the system reliability was limited by the phase shifter, ie the arcs are in the transmission line. Into plasmas, the voltage reached ~22-24 kV during H-mode (021) which is ~50% higher than last campaign. We will test the phase shifter tomorrow. |
| Physics Operator Summaries |
| Entered: Jul 7 2004 04:37:13:457PM |
| Author: To Be Determined |
| Physop Run Summary for 1010621 This run will be in support of J-Port Conditioning MP215 PO: Irby SL: Wukitch EO: Byford, Cochran, Dekow Engineering setup: ECDC in D2 at 2.e-4 Torr overnight prior to run. We will require ECDC in D2 between shots Power systems as on 1010619010 Gas setup: fill B-top with 6 psi of D2 Hybrid enabled (PG4) fill B-side lower with 1 psi of Ar Hybrid enabled (PG1) fill B-side upper with 30 psi of D2 Hybrid DISABLED (PG2) fill C-side with 30 psi of D2 Hybrid enabled (PG3) fill J-bottom with 30 psi of He Hybrid DISABLED (PG5) Enable the following gate valves: ECE, DNB, VUV Run starts at 09:00 and ends at 17:00. ------------------------------------------------------------------------------- RF Setup: Transmitters 1-4 ready run-on by 07:15 ------------------------------------------------------------------------------- Results: The first shot was a dud because the PO unwisely decided not to ECDC following J-Port conditioning. Though the conditioning barely showed up at all on the RGA and the pressure rise was just a couple X 10-8 Torr, clearly something is released in the vessel that can cause a dud. Generally we had problems with fizzles following disruptions and never got into a good running mode. However, the j-port antenna did get some shots with 2.5 MW of power for about 20 ms. As usual, it was necessary to run ECDC to try and keep H/D down. The front face of the J-Port antenna looks much better than in December. Very little light even from the septum and edge protection tiles. Generally, J-Port seems to be coming up nicely. We had sustained periods with 2.5 MW of power. The fault detection system seems to be operating well with very short response times. The plasma does not seem to be degraded by faulting as it was in the past either because of improved fault protection or because the plasma facing components are behaving much better. H/D was generally higher than we would like most of the day. More between shot ECDC should fix this problem. The carbon II levels are coming up, possibly indicative of the quality of our boronization. Problems: Lost one shot to OH2L breaker pull for no clear reason. Fizzles and duds probably the result of J-Port conditioning and possibly operation. ECDC only ran to 22:30 last night, so we did not get as much cleanup as we expected (high TC temp fault). Score: plasmas 12 fizzles 06 duds 02 PS flt 01 cycles 21 Some details: ---------------------------------------------------------------------------- 1010621xxx irby DISCHARGE_CLEAN Jun 21 2001 7:24:52:440AM . . . . . . . . . . . . . . . . . . . . ECDC only ran until 22:30 last night at 2e-4 Torr in D2. ---------------------------------------------------------------------------- 1010621xxx irby PHYSICS_OPERATOR Jun 21 2001 8:29:41:673AM . . . . . . . . . . . . . . . . . . . . Cold start okay: all matrices respond Loaded shot 1010619010 into PCS Loaded shot 1010620020 into seg 1 for startup ---------------------------------------------------------------------------- 1010621xxx irby OPS Jun 21 2001 8:37:52:260AM . . . . . . . . . . . . . . . . . . . . I have blocked the lower cell vent to force air to be removed from below the machine rather than along the southeast wall. ---------------------------------------------------------------------------- 1010621xxx irby PHYSICS_OPERATOR Jun 21 2001 9:06:47:213AM . . . . . . . . . . . . . . . . . . . . TCI signals are pretty bad. We have plenty of laser power, but reference arm power is very low. Using Z-meter feedback for density control. ---------------------------------------------------------------------------- 1010621001 irby PHYSICS_OPERATOR Jun 21 2001 9:29:47:546AM . . . . . . . . . . . . . . . . . . . . Transmitter 1 will be down today. Will try running 3 and 4. Dud --- looks like it's time to do ECDC --- conditioning of j-port did not even show up on RGA but it was sufficient to cause a dud?? ---------------------------------------------------------------------------- 1010621002 irby PHYSICS_OPERATOR Jun 21 2001 10:22:12:190AM . . . . . . . . . . . . . . . . . . . . Plasma attempt after 15 minutes of ECDC Plasma to rampdown --- clear heating from J-Port H/D 5% Density a little high ---------------------------------------------------------------------------- 1010621003 irby PHYSICS_OPERATOR Jun 21 2001 10:38:33:436AM . . . . . . . . . . . . . . . . . . . . Dropped density (z-meter control) from 0.65 to 0.60 Fizzle Pressure pretty high ---------------------------------------------------------------------------- 1010621004 irby PHYSICS_OPERATOR Jun 21 2001 11:17:24:876AM . . . . . . . . . . . . . . . . . . . . Reduced fill by 2 ms Dud Gas okay Fields okay ---------------------------------------------------------------------------- 1010621005 irby PHYSICS_OPERATOR Jun 21 2001 11:45:23:890AM . . . . . . . . . . . . . . . . . . . . No PCS changes No ECDC this time --- waited 20 minutes for impurity levels to drop No indication of a leak --- m32, m28, m14 dropping nicely Basepressure near t=0: 5.9e-7 Torr Plasma to rampdown -- short h-mode Got the lower density that was requested by Rf H/D 4 to 6% ---------------------------------------------------------------------------- 1010621006 irby PHYSICS_OPERATOR Jun 21 2001 12:02:38:796PM . . . . . . . . . . . . . . . . . . . . No ECDC again. Waited approximately 22 minutes Basepressure at t=0: 6.9e-7 Torr Plasma into rampdown --- H/D as high as 8% during E-Port ---------------------------------------------------------------------------- 1010621007 irby PHYSICS_OPERATOR Jun 21 2001 12:28:09:930PM . . . . . . . . . . . . . . . . . . . . No ECDC again, but will run it on next shot to get H/D back down Basepressure: 7.0e-7 Torr Plasma to rampdown --- H/D at 8% ---------------------------------------------------------------------------- 1010621008 irby PHYSICS_OPERATOR Jun 21 2001 12:51:22:356PM . . . . . . . . . . . . . . . . . . . . ECDC for 10 minutes to reduce H/D Waited until bp was less than 1.5e-6 Torr following ECDC No PCS changes Fizzle --- ECDC seems to be a bad thing now Bz0 creeping up, also Br0. ---------------------------------------------------------------------------- 1010621009 irby PHYSICS_OPERATOR Jun 21 2001 1:02:06:090PM . . . . . . . . . . . . . . . . . . . . No ECDC this time --- wait about 15 minutes Basepressure: 6.9e-7 Torr Fizzle --- time to adjust Br, Bz ---------------------------------------------------------------------------- 1010621010 irby PHYSICS_OPERATOR Jun 21 2001 1:23:03:233PM . . . . . . . . . . . . . . . . . . . . Br0 offset from .002 to .0015 T EF4 current from -1280 to -1290 Amps Plasma to 0.98 s --- H/D 5 to 7% 100 kA halo, 20 um motion Gas and Fields okay ---------------------------------------------------------------------------- 1010621011 irby PHYSICS_OPERATOR Jun 21 2001 1:37:28:846PM . . . . . . . . . . . . . . . . . . . . No ECDC --- waited 15 minutes No PCS changes BP: 7.8e-7 Torr fizzle --- disruption recovery? Gas and fields not too bad ---------------------------------------------------------------------------- 1010621012 irby PHYSICS_OPERATOR Jun 21 2001 2:08:29:770PM . . . . . . . . . . . . . . . . . . . . Waited 15 minutes No PCS changes Plasma into rampdown --- 2 relatively clean MWs from J-Port H/D 7.5 to 10% ---------------------------------------------------------------------------- 1010621013 irby PHYSICS_OPERATOR Jun 21 2001 2:44:06:466PM . . . . . . . . . . . . . . . . . . . . No PCS changes Waited about 14 minutes Plasma to rampdown --- 2.5 MW from J-Port briefly --- used all nine interrupts Earl fired Li pellet during rampdown ---------------------------------------------------------------------------- 1010621014 irby PHYSICS_OPERATOR Jun 21 2001 3:03:03:150PM . . . . . . . . . . . . . . . . . . . . ECDC for 15 minutes Between shot time about 28 minutes EF4 back to -1280 Amps from -1290 BP at shot: 1.6e-6 Torr Plasma to rampdown --- H/D 5 to 7% 2.5 MW from J-Port for 20 ms Gas and fields look good ---------------------------------------------------------------------------- 1010621015 irby PHYSICS_OPERATOR Jun 21 2001 3:21:14:413PM . . . . . . . . . . . . . . . . . . . . No PCS changes ECDC for 15 minutes Between shot time about 28 minutes --- will only ecdc 10 minutes after this shot Gerd, Ned, Bill C enter power room to fix DNB --- nothing found BP at shot: 1.6e-6 Torr Fizzle --- big jump in Bz0 ---------------------------------------------------------------------------- 1010621016 irby PHYSICS_OPERATOR Jun 21 2001 3:40:40:646PM . . . . . . . . . . . . . . . . . . . . EF4 to -1290 again from -1280 No ECDC About 10 minutes in recool BP: 8e-7 Torr No plasma --- pulled PF breaker --- OH2L No problems found with fuses or scrs --- fault at switch closing (-.7) ---------------------------------------------------------------------------- 1010621017 irby PHYSICS_OPERATOR Jun 21 2001 4:12:45:493PM . . . . . . . . . . . . . . . . . . . . Repeat BP at shot: 5.e-7 Plasma for 1.04 s --- H/D 4% to 6% ---------------------------------------------------------------------------- 1010621018 irby PHYSICS_OPERATOR Jun 21 2001 4:32:02:256PM . . . . . . . . . . . . . . . . . . . . No Changes Plasma to rampdown --- H/D 12 to 14% fill pressure dropping a little over last few shots ---------------------------------------------------------------------------- 1010621019 irby PHYSICS_OPERATOR Jun 21 2001 4:57:44:813PM . . . . . . . . . . . . . . . . . . . . Added 2 ms to prefill ECDC for 10 minutes Reduced CLEARIN by .02 m for inner wall limited plasma Reduced RCUR by .01 m to match CLEARIN change Plasma to rampdown ---- pretty clean 2.5 MW from J-Port H/D 8 to 10% ---------------------------------------------------------------------------- 1010621020 irby PHYSICS_OPERATOR Jun 21 2001 5:08:54:640PM . . . . . . . . . . . . . . . . . . . . Reduced prefill by 1 ms Decreased CLEARIN by .004 m Increased RCUR by .001 m fizzle --- late breakdown ---------------------------------------------------------------------------- 1010621021 irby PHYSICS_OPERATOR Jun 21 2001 5:21:57:646PM . . . . . . . . . . . . . . . . . . . . No PCS changes Plasma to rampdown but still a mm or two shy of inner wall limited until 1 s into discharge Outer gap a little less as expected |
| Session Leader Comments |
| Physics Operator Comments | |||
| Jun 21 2001 08:29:41:673AM | Jim Irby | Cold start okay: all matrices respond Loaded shot 1010619010 into PCS Loaded shot 1010620020 into seg 1 for startup | |
| Jun 21 2001 09:06:47:213AM | Jim Irby | TCI signals are pretty bad. We have plenty of laser power, but reference arm power is very low. Using Z-meter feedback for density control. | |
| Jun 21 2001 09:29:47:547AM | 1010621001 | Jim Irby | Transmitter 1 will be down today. Will try running 3 and 4. Dud --- looks like it's time to do ECDC --- conditioning of j-port did not even show up on RGA but it was sufficient to cause a dud?? |
| Jun 21 2001 10:22:12:190AM | 1010621002 | Jim Irby | Plasma attempt after 15 minutes of ECDC Plasma to rampdown --- clear heating from J-Port H/D 5% Density a little high |
| Jun 21 2001 10:38:33:437AM | 1010621003 | Jim Irby | Dropped density (z-meter control) from 0.65 to 0.60 Fizzle Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.5378 -13.5086 -23.8852 -21.2911 dIp/dt (kA/ms): -1.5282 -2.6704 -1.1445 0.0011 pressure (mTorr): 0.0969 0.1002 0.0926 0.0958 Bz0 (mT): -4.0317 -0.6356 -0.0656 16.4680 Br0 (mT): 0.0204 -0.2358 -0.4136 -0.7851 Pressure pretty high |
| Jun 21 2001 11:17:24:877AM | 1010621004 | Jim Irby | Reduced fill by 2 ms Dud Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.0564 -16.1027 -21.2911 -18.7196 dIp/dt (kA/ms): -1.5282 -2.2901 -0.6358 0.0000 pressure (mTorr): 0.0905 0.0856 0.0895 0.0905 Bz0 (mT): -3.3190 -0.7442 0.6370 17.5706 Br0 (mT): -0.1124 -0.7541 -0.4106 -0.8541 Gas okay Fields okay |
| Jun 21 2001 11:45:23:890AM | 1010621005 | Jim Irby | No PCS changes No ECDC this time --- waited 20 minutes for impurity levels to drop No indication of a leak --- m32, m28, m14 dropping nicely Basepressure near t=0: 5.9e-7 Torr Plasma to rampdown -- short h-mode Got the lower density that was requested by Rf H/D 4 to 6% |
| Jun 21 2001 12:02:38:797PM | 1010621006 | Jim Irby | No ECDC again. Waited approximately 22 minutes Basepressure at t=0: 6.9e-7 Torr Plasma into rampdown --- H/D as high as 8% during E-Port Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.1018 -13.4859 -31.6677 -117.2749 dIp/dt (kA/ms): -1.3988 -3.1814 -3.8149 -7.7604 pressure (mTorr): 0.0723 0.0765 0.0731 0.0661 Bz0 (mT): -3.7237 -1.4609 -0.0733 19.7212 Br0 (mT): 0.1590 -0.2151 -0.7656 -1.2175 |
| Jun 21 2001 12:28:09:930PM | 1010621007 | Jim Irby | No ECDC again, but will run it on next shot to get H/D back down Basepressure: 7.0e-7 Torr Plasma to rampdown --- H/D at 8% |
| Jun 21 2001 12:51:22:357PM | 1010621008 | Jim Irby | ECDC for 10 minutes to reduce H/D Waited until bp was less than 1.5e-6 Torr following ECDC No PCS changes Fizzle --- ECDC seems to be a bad thing now Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.5151 -16.1027 -26.4567 -21.2911 dIp/dt (kA/ms): -1.6565 -2.7976 -2.0335 0.1283 pressure (mTorr): 0.0809 0.0809 0.0791 0.0782 Bz0 (mT): -3.2957 0.0693 1.2870 17.0076 Br0 (mT): -0.2252 -0.2085 -0.0791 -0.8825 Bz0 creeping up, also Br0. |
| Jun 21 2001 01:02:06:090PM | 1010621009 | Jim Irby | No ECDC this time --- wait about 15 minutes Basepressure: 6.9e-7 Torr Fizzle --- time to adjust Br, Bz |
| Jun 21 2001 01:23:03:233PM | 1010621010 | Jim Irby | Br0 offset from .002 to .0015 T EF4 current from -1280 to -1290 Amps Plasma to 0.98 s --- H/D 5 to 7% 100 kA halo, 20 um motion Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): -0.5151 -13.4859 -29.0508 -83.5282 dIp/dt (kA/ms): -1.5282 -3.0509 -2.9237 -6.9918 pressure (mTorr): 0.0707 0.0748 0.0699 0.0676 Bz0 (mT): -4.4484 -1.4442 -0.5189 17.7317 Br0 (mT): -0.4036 -1.1070 -0.6285 -1.5555 Gas and Fields okay |
| Jun 21 2001 01:37:28:847PM | 1010621011 | Jim Irby | No ECDC --- waited 15 minutes No PCS changes BP: 7.8e-7 Torr fizzle --- disruption recovery? Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.0791 -16.1027 -29.0735 -26.4794 dIp/dt (kA/ms): -1.5271 -3.3085 -2.4172 0.7607 pressure (mTorr): 0.0699 0.0731 0.0684 0.0618 Bz0 (mT): -3.8215 -2.3758 -0.2895 15.6457 Br0 (mT): -0.7333 -0.5455 -1.0948 -1.5136 Gas and fields not too bad |
| Jun 21 2001 02:08:29:770PM | 1010621012 | Jim Irby | Waited 15 minutes No PCS changes Plasma into rampdown --- 2 relatively clean MWs from J-Port H/D 7.5 to 10% |
| Jun 21 2001 02:44:06:467PM | 1010621013 | Jim Irby | No PCS changes Waited about 14 minutes Plasma to rampdown --- 2.5 MW from J-Port briefly --- used all nine interrupts Earl fired Li pellet during rampdown |
| Jun 21 2001 03:03:03:150PM | 1010621014 | Jim Irby | ECDC for 15 minutes Between shot time about 28 minutes EF4 back to -1280 Amps from -1290 BP at shot: 1.6e-6 Torr Plasma to rampdown --- H/D 5 to 7% 2.5 MW from J-Port for 20 ms Gas and fields look good Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.0564 -13.4859 -29.0735 -96.5217 dIp/dt (kA/ms): -1.5271 -2.9226 -2.9248 -5.8518 pressure (mTorr): 0.0809 0.0818 0.0837 0.0800 Bz0 (mT): -2.2616 -0.2142 1.4720 18.5674 Br0 (mT): -0.5562 -0.7455 -0.8351 -1.7493 |
| Jun 21 2001 03:21:14:413PM | 1010621015 | Jim Irby | No PCS changes ECDC for 15 minutes Between shot time about 28 minutes --- will only ecdc 10 minutes after this shot Gerd, Ned, Bill C enter power room to fix DNB --- nothing found BP at shot: 1.6e-6 Torr Fizzle --- big jump in Bz0 Time (ms): 0 5 10 25 ---------------------------------------- Ip (kA): 2.0791 -16.1027 -23.8852 -23.8852 dIp/dt (kA/ms): -1.4010 -2.5455 -1.7803 0.2544 pressure (mTorr): 0.0818 0.0791 0.0837 0.0846 Bz0 (mT): -2.9627 0.3119 0.9737 16.2398 Br0 (mT): -0.8763 -1.1295 -0.4783 -1.2677 |
| Jun 21 2001 03:40:40:647PM | 1010621016 | Jim Irby | EF4 to -1290 again from -1280 No ECDC About 10 minutes in recool BP: 8e-7 Torr No plasma --- pulled PF breaker --- OH2L No problems found with fuses or scrs --- fault at switch closing (-.7) |
| Jun 21 2001 04:12:45:493PM | 1010621017 | Jim Irby | Repeat BP at shot: 5.e-7 Plasma for 1.04 s --- H/D 4% to 6% |
| Jun 21 2001 04:32:02:257PM | 1010621018 | Jim Irby | No Changes Plasma to rampdown --- H/D 12 to 14% fill pressure dropping a little over last few shots |
| Jun 21 2001 04:57:44:813PM | 1010621019 | Jim Irby | Added 2 ms to prefill ECDC for 10 minutes Reduced CLEARIN by .02 m for inner wall limited plasma Reduced RCUR by .01 m to match CLEARIN change Plasma to rampdown ---- pretty clean 2.5 MW from J-Port H/D 8 to 10% |
| Jun 21 2001 05:08:54:640PM | 1010621020 | Jim Irby | Reduced prefill by 1 ms Decreased CLEARIN by .004 m Increased RCUR by .001 m fizzle --- late breakdown |
| Jun 21 2001 05:21:57:647PM | 1010621021 | Jim Irby | No PCS changes Plasma to rampdown but still a mm or two shy of inner wall limited unti 1 s into discharge Outer gap a little less as expected |
| Engineering Operator Comments | ||||
| Shot | Time | Type | Status | Comment |
| 1 | 09:20:02:203AM | Plasma | Ok | |
| 2 | 10:03:54:337AM | Plasma | Ok | |
| 3 | 10:30:37:150AM | Plasma | Ok | |
| 4 | 10:58:30:900AM | Plasma | Ok | |
| 5 | 11:21:14:090AM | Plasma | Ok | |
| 6 | 11:45:53:453AM | Plasma | Ok | |
| 7 | 12:09:01:197PM | Plasma | Ok | |
| 8 | 12:37:55:087PM | Plasma | Ok | |
| 9 | 12:55:51:643PM | Plasma | Ok | |
| 10 | 01:09:41:917PM | Plasma | Ok | |
| 11 | 01:29:35:337PM | Plasma | Ok | |
| 12 | 01:49:43:990PM | Plasma | Ok | |
| 13 | 02:11:42:323PM | Plasma | Ok | |
| 14 | 02:42:18:010PM | Plasma | Ok | |
| 15 | 03:13:23:760PM | Plasma | Ok | |
| 16 | 03:25:49:593PM | Plasma | Bad | OH2L Commutation fault |
| 17 | 03:46:31:937PM | Plasma | Ok | |
| 18 | 04:10:42:177PM | Plasma | Ok | |
| 19 | 04:36:43:077PM | Plasma | Ok | |
| 20 | 05:02:39:130PM | Plasma | Ok | |
| 21 | 05:15:11:370PM | Plasma | Ok | |