Entry display output on Wed Aug 26 15:40:39 2009 ---------------------------------------------------------------------------- 1080523001 jinseok SESSION_LEADER May 23 2008 9:38:20:370AM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: good beam, good shot, good mse data But we got TF ground fault! ---------------------------------------------------------------------------- 1080523002 jinseok SESSION_LEADER May 23 2008 10:12:04:490AM . . . . . . . . . . . . . . . . . . . . TF test ---------------------------------------------------------------------------- 1080523003 jinseok SESSION_LEADER May 23 2008 10:34:30:146AM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: good beam, good shot, good mse data ---------------------------------------------------------------------------- 1080523004 jinseok SESSION_LEADER May 23 2008 10:50:13:410AM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas: BES piggyback No field MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result; Good gas, good beam ---------------------------------------------------------------------------- 1080523006 jinseok SESSION_LEADER May 23 2008 11:06:09:726AM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: Good beam, Good gas ---------------------------------------------------------------------------- 1080523007 jinseok SESSION_LEADER May 23 2008 11:19:52:436AM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: Good beam, good gas ---------------------------------------------------------------------------- 1080523008 jinseok SESSION_LEADER May 23 2008 11:43:53:140AM . . . . . . . . . . . . . . . . . . . . Part 1b: beam-into-plasma MSE HV: 1700/1700/1700/1700 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: plasma: interferometer jumpup and density control didn't go as we want dnb: faulty after 1.2 sec ---------------------------------------------------------------------------- 1080523009 jinseok SESSION_LEADER May 23 2008 12:06:28:030PM . . . . . . . . . . . . . . . . . . . . Part 1b: beam-into-plasma MSE HV: 1750/1750/1750/1750 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: plasma density is slightly low there was a jump in li and loop voltage at 0.7s dnb: one fault ---------------------------------------------------------------------------- 1080523010 jinseok SESSION_LEADER May 23 2008 12:09:08:736PM . . . . . . . . . . . . . . . . . . . . We asked nl_04 be 0.7 to PhysOp Part 1b: beam-into-plasma MSE HV: 1750/1750/1750/1750 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: plasma: good dnb: faulty after 1.1 sec ---------------------------------------------------------------------------- 1080523011 jinseok SESSION_LEADER May 23 2008 12:32:29:613PM . . . . . . . . . . . . . . . . . . . . Part 1b: beam-into-plasma MSE HV: 1750/1750/1750/1750 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: plasma: good dnb: one fault at the end ---------------------------------------------------------------------------- 1080523012 jinseok SESSION_LEADER May 23 2008 12:33:04:286PM . . . . . . . . . . . . . . . . . . . . Part 1b: beam-into-plasma MSE HV: 1750/1750/1750/1750 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: plasma: good dnb: many faults in dnb ---------------------------------------------------------------------------- 1080523013 jinseok SESSION_LEADER May 23 2008 12:56:33:040PM . . . . . . . . . . . . . . . . . . . . Part 2: L1 heating with ICRF MSE HV: 1700/1700/1700/1700 DNB (on/length/on-off): 0.315 / 1.5 / 70-30 Result: plasma: good icrf: good dnb: no pulses after rf ---------------------------------------------------------------------------- 1080523014 jinseok SESSION_LEADER May 23 2008 1:05:17:543PM . . . . . . . . . . . . . . . . . . . . Part 2: L1 heating with ICRF MSE HV: 1700/1700/1700/1700 DNB (on/length/on-off): 0.315 / 1.5 / 70-30 RF length is reduced Result: plasma: good icrf: good dnb: good ---------------------------------------------------------------------------- 1080523015 jinseok SESSION_LEADER May 23 2008 1:25:37:810PM . . . . . . . . . . . . . . . . . . . . early disruption ---------------------------------------------------------------------------- 1080523016 jinseok SESSION_LEADER May 23 2008 1:31:11:626PM . . . . . . . . . . . . . . . . . . . . Part 2: L1 heating with ICRF MSE HV: 1700/1700/1700/1700 DNB (on/length/on-off): 0.315 / 1.5 / 70-30 Result: plasma: good icrf: good dnb: good ---------------------------------------------------------------------------- 1080523017 jinseok SESSION_LEADER May 23 2008 2:18:33:133PM . . . . . . . . . . . . . . . . . . . . Part 3: LH + ICRF effect on MSE background MSE HV: 1700/1700/1700/1700 No DNB Result: plasma: good icrf: timing was wrong ic: power too low so the plasma was in L mode ---------------------------------------------------------------------------- 1080523018 jinseok SESSION_LEADER May 23 2008 2:44:43:950PM . . . . . . . . . . . . . . . . . . . . Part 3: LH + ICRF effect on MSE background MSE HV: 1700/1700/1700/1700 No DNB mse ch3 fiber - ch7 filter mse ch7 fiber - ch3 filter mse ch6 fiber - ch1 filter mse ch1 fiber - ch6 filter ICRF timing is corrected. Probably will have the higher LH Result: plasma good icrf good lh: improved mse ch7 signal saturated around 1 sec ---------------------------------------------------------------------------- 1080523019 jinseok SESSION_LEADER May 23 2008 2:47:37:780PM . . . . . . . . . . . . . . . . . . . . fizzle ---------------------------------------------------------------------------- 1080523020 jinseok SESSION_LEADER May 23 2008 3:02:47:870PM . . . . . . . . . . . . . . . . . . . . We were in the middle of the process of swapping channels HV off a waste of shot Plasma / RF themselves were good ---------------------------------------------------------------------------- 1080523021 jinseok SESSION_LEADER May 23 2008 3:13:34:173PM . . . . . . . . . . . . . . . . . . . . Part 3: LH + ICRF effect on MSE background MS HV: 1600 for all No DNB mse fiber-filter in nominal position Result: plasma: good icrf: good lh: good ---------------------------------------------------------------------------- 1080523022 jinseok SESSION_LEADER May 23 2008 3:29:08:906PM . . . . . . . . . . . . . . . . . . . . Part 3: LH + ICRF effect on MSE background MS HV: 1600 for all No DNB mse ch3 fiber - ch7 filter mse ch7 fiber - ch3 filter mse ch6 fiber - ch1 filter mse ch1 fiber - ch6 filter Result: Plasma: good icrf: good lhcd: good ---------------------------------------------------------------------------- 1080523023 jinseok SESSION_LEADER May 23 2008 3:55:16:800PM . . . . . . . . . . . . . . . . . . . . fizzle ---------------------------------------------------------------------------- 1080523024 jinseok SESSION_LEADER May 23 2008 3:55:44:643PM . . . . . . . . . . . . . . . . . . . . Part 3: LH + ICRF effect on MSE background MS HV: 1600 for all No DNB mse ch3 fiber - ch9 filter mse ch9 fiber - ch3 filter mse ch6 fiber - ch7 filter mse ch7 fiber - ch6 filter Result: plasma: good (disrupted at 1.68s) icrf and lh: good ---------------------------------------------------------------------------- 1080523025 jinseok SESSION_LEADER May 23 2008 4:10:51:780PM . . . . . . . . . . . . . . . . . . . . Part 4: ICRF effect on MSE background MS HV: 1600 for all No DNB mse ch3 fiber - ch7 filter mse ch7 fiber - ch3 filter mse ch6 fiber - ch1 filter mse ch1 fiber - ch6 filter Result: plasma: good icrf: good ---------------------------------------------------------------------------- 1080523026 jinseok SESSION_LEADER May 23 2008 4:47:44:730PM . . . . . . . . . . . . . . . . . . . . Part 4: ICRF effect on MSE background MS HV: 1600 for all No DNB mse filter-fiber nominal position Result: plasma: good icrf: good ---------------------------------------------------------------------------- 1080523027 wallaceg SESSION_LEADER May 29 2008 10:54:35:740AM . . . . . . . . . . . . . . . . . . . . Good shot at 7.0T, 800kW net, 90 degree phasing. One trip late in shot, but otherwise clean. Density scan from 6-8.5e19 nl_04. ---------------------------------------------------------------------------- 1080523028 jinseok SESSION_LEADER May 23 2008 4:52:48:906PM . . . . . . . . . . . . . . . . . . . . Part 1a: beam-into-gas MSE HV: 1870/1870/1870/1870 DNB (on/length/on-off): 0.2 / 1.5 / 80-20 Result: good beam, good shot, good mse data MSE run is done. FY08 campaign is done. Thank you. ---------------------------------------------------------------------------- 1080523028 jinseok SL_SUMMARY May 23 2008 5:41:11:273PM . . . . . . . . . . . . . . . . . . . . MP554. MSE calibrations - torus temperature effects and background issues operated by J Snipes hosted by S Scott and J Ko Purposes: (1) To verify that the shot-to-shot drift in the MSE diagnostic can be reduced by maintaining the torus temperature constant. (2) To test the effect of the first lens heating on the MSE diagnostic within a shot (3) explore LH+ICRF effect on MSE background; and (4) explore ICRF effect on MSE background in D plasma (1) Temperature variation in the torus and MSE invessel canister: The key point in this part is to start the run with the constant torus temperature to see whether the mse shot-to-shot drift is reduced or not. The torus temperature had successfully been constant from the previous night around 35C. The mse shot-to-shot drift was significantly decreased compared with the 1080318 beam-into-gas run where the torus temperature was varing over 100C. However, the last beam-into-gas shot was taken at 5pm and it was drifted from the group of beam-into-gas shots. We had a lot of plasma shots (with icrf + lhcd) before this last gas shot and this changed the temperature a lot. beam-into-gas shots: 1, 3, 6, 7, 28 plasma shots: 8, 9, 10, 11, 12 *About an hour delay due to the TF ground fault after shot 1 *Two BES piggyback shots (beam-iinto-gas with zero field): 4, 5 (2) Thermal-stress induced birefringence on the plasma facing lens duing a shot: This investigate the effect of instant (and intense) heating applied on the first MSE lens (L1). The two Ohmic flat phases before/after RF pulse are compared. To the first order, no significant change was observed. useful shots: 14,16 shot 13: no beam after rf shot 15: early disruption (3) LH+ICRF effect on MSE background: The main purpose of this is to see whether the rapid change in the MSE background correalted with ICRF and/or LH on/off is due to a particualr line on the spectrum or due to a particular bright spot in the vessel. Three different MSE filter-fiber swapping configurations were tried. config 1: normal, shot 21 config 2: ch3 and ch7 fibers swap the filters ch1 and ch6 fibers swap the filters shot 22 (17 and 18)* config 3: ch3 and ch9 fibers swap the filters ch6 and ch7 fibers swap the filters shot 24 *shot 17 - icrf timing was wrong, double null, no H mode *shot 18 - MSE channel 7 saturated (but not useless) shot 19, 23 - fizzle Tentative conclusion from this test is that the MSE background change is due to a particular bright spot in the vessel. (4) ICRF effect on MSE background in D plasma: Same purpose as part (3) but with ICRF only config 1: shot 26 config 2: shot 25 Similar tentative conclusion to part (3) ---------------------------------------------------------------------------- 1080523xxx jinseok SESSION_LEADER May 22 2008 2:51:41:576PM . . . . . . . . . . . . . . . . . . . . MP554. MSE calibrations - torus temperature effects and background issues 0.69 day run (9am ~ 2:30pm) operated by J Snipes hosted by S Scott and J Ko Purposes: (1) To verify that the shot-to-shot drift in the MSE diagnostic can be reduced by maintaining the torus temperature constant. (2) To test the effect of the first lens heating on the MSE diagnostic within a shot (3) explore LH+ICRF effect on MSE background; and (4) explore ICRF effect on MSE background in D plasma IMPORTANT: No overnight boronization, No overnight ECDC, and the magnet cooling should start at the previous night. This will be done by the following: a. LH cooling will remain on at the end of the previous (1080522) run. b. Heating control will be applied to keep the vessel temperature 35C. Necessary diagnostics: MSE (Of course...) GPI spectrometer (Alex Graf) UT McPerson spectrometer (Igor Bespamyatnov) Chromex (Ken Marr) All video cameras (Jim Terry) Necessary resources: DNB LH ICRF (0) Spectrometers setup: should include 658 ~ 663 nm (a) GPI (Alex Graf): 4 channels to CXRS toroidal views ------------------ GPI CXRS (R) ------------------ 1 A1 (85.79) 2 A3 (86.31) 3 A5 (86.84) 4 A7 (87.42) ------------------ (b) UT McPherson (Igor Bespamyatnov): connected to MSE Ch8 fiber (c) Chromex (Ken Marr) (1) Temperature variation in the torus and MSE invessel canister (a) Beam-into-gas shots: 5 ~ 8 shots (9 ~ 11AM) Power system from 1080318029 Start Gas setting (whatever it was) earlier by 0.3 sec 6 PSI Make sure all the torus valves closed DNB starts at 0.2 sec for 1.5 sec with on/off = 80/20 msec MSE HV: 1870V for all Two zero-field shots for the BES piggyback will be done during this part. So the shot sequence would be a. 3 MSE shots b. 2 BES piggyback shots c. 3 MSE shots, the last shot being taken around at 11AM. (b) Beam-into-plasma shots: 4 shots (11 ~ 12PM) Power system/density from 1080312004 (Ohmic) DNB starts at 0.2 sec for 1.5 sec with on/off = 80/20 msec MSE HV: 1700V for all (2) Thermal-stress induced birefringence on the plasma facing lens duing a shot: 3 ~ 4 shots including RF conditioning shots (12 ~ 1PM) Power system/density from 1080422013 with the following modifications a. Ip and Bt flattop = 0.3 ~ 1.8 sec b. ICRF = 0.7 ~ 1.4 sec (with 4+ MW: may not possible) He3 puffing may be needed for better ICRF performance (This is only true when J antenna is available) DNB starts at 0.315 sec for 1.5 sec with on/off = 70/30 msec MSE HV: 1600/1700/1700/1700V Backup shot configuration: He plasma Power system/density/ICRF from 1080411023, 24, 25, or 27 (3) LH+ICRF effect on MSE background: 3 ~ 4 shots (1 ~ 2PM) Power system/density/ICRF/LH from 1080306020 with the following modifications a. LH = 0.8 MW b. ICRF = 3 MW (may not possible) No DNB MSE HV: 1600 for all (or 1550 for all) (a) 'large' fiber swapping shot: 1 shot with ch3 fiber - ch7 filter ch7 fiber - ch3 filter ch6 fiber - ch1 filter ch1 fiber - ch6 filter (b) nominal MSE filter/fiber positions: 1 shot (c) 'small' fiber swapping shot: 1 shot with ch3 fiber - ch9 filter ch9 fiber - ch3 filter ch6 fiber - ch7 filter ch7 fiber - ch6 filter (4) ICRF effect on MSE background in D plasma: 1 ~ 2 shots (2 ~ 2:30PM) Power system/density/ICRF from 1080404014, 15, or 1080416021 No DNB MSE HV: 1700 for all Repeat (a), (b) above