LH Experiment Summary 1060406. Run 1060406 Goals: Test protection system- RINT/FINT ratios Increase LH power and duration Look for evidence of current drive. Run 1060406 Results:
LH Experiment Summary 1060406
An Image/Link below is provided (as is) to download presentation
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Bugs were found with the protection system, requiring lengthy cell accesses. The protection system worked some of the time, the reasons for failure were found and the method seems promising for arc protection.
Coupling study was continued with remaining 3 shots. Pushed in to a position ~1mm behind limiter and observed better coupling.
Run Summary for 1060413
Run 1060413 Goals:
Test protection system, and restrike
Increase LH power and duration
Look for evidence of current drive
Started of with 5 ms pulses to check protection system
First fault due to body current at 80kW/klystron.
Backed power down to 70 kW/klystron, protection system worked so the pulse length was extended. Increased duration until a slow periodic structure was observed on the reflected power.
The oscillation was intermittent, but at levels high enough to cause a trip if we had protection on the jungle gym. Lowered power and used ramps.