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| Entered: Mar 28 2006 02:53:45:630PM |
| Author: Joseph Snipes |
| Engineering setup for Thursday 30-Mar-2006 MP466 Intra_Shot Diborane Injection in Alctor C-Mod Session leader: Irby Physics operator: Snipes Overnight ECDC in D2, and bake at 60 C. Run begins at 09:00 and ends at 17:00 Power systems as on 1060328010 (1.0 MA fiducial, 5.4 T, LSN) A-coil configuration: normal [+Dtop -Dbot -Jtop +Jbot] and enabled. Gas Setup: fill B-Top with 6 psi D2 Fill select enabled (PG4) fill B-side lower with 1 psi Ar + 2 psi Ne Hybrid DISABLED (PG1) leave B-side upper as is Hybrid DISABLED (PG2) fill B-main (C-side) with 40 psi D2 Hybrid enabled (PG3) fill NINJA with 12 psi D2 Enabled Enable the following gate valves and shutters: TCI and YAG Torvac setup: GV1 closed with bypass at 180 clicks GV2 set to toggle closed at pulse for 300 s Startup should use static fill. Shot Sequence: 1-3 Produce LSN, rf fiducial shot with at least 2 MW of ICRF power. Demonstrate that the discharges are reproducible (fiducial: 1060328010) 4-8 Begin diborane injection with 500 ms pulse at t=450 ms and ICRF at 650 ms. Modify gas puff as required to eliminate disruptions. 9-17 Assuming stable conditions have been found, monitor plasma performance over several constant discharges. If an improvement in performance is seen, stop He/ B2D6 puff for two shots and judge how long the effects last. 18-21 Double null operation (1050303024 --- seg 4) 22-23 Return to LSN to observer any changes 23-30 USN operation if no improvements noted otherwise continue DN or return to LSN. |
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