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Preliminary Results from XP1020 RFA Measurements

NSTX. Supported by. Preliminary Results from XP1020 RFA Measurements. College W&M Colorado Sch Mines Columbia U CompX General Atomics INL Johns Hopkins U LANL LLNL Lodestar MIT Nova Photonics New York U Old Dominion U ORNL PPPL PSI Princeton U Purdue U SNL Think Tank, Inc.

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Preliminary Results from XP1020 RFA Measurements

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  1. NSTX Supported by Preliminary Results from XP1020 RFA Measurements College W&M Colorado Sch Mines Columbia U CompX General Atomics INL Johns Hopkins U LANL LLNL Lodestar MIT Nova Photonics New York U Old Dominion U ORNL PPPL PSI Princeton U Purdue U SNL Think Tank, Inc. UC Davis UC Irvine UCLA UCSD U Colorado U Illinois U Maryland U Rochester U Washington U Wisconsin Culham Sci Ctr U St. Andrews York U Chubu U Fukui U Hiroshima U Hyogo U Kyoto U Kyushu U Kyushu Tokai U NIFS Niigata U U Tokyo JAEA Hebrew U Ioffe Inst RRC Kurchatov Inst TRINITI KBSI KAIST POSTECH ASIPP ENEA, Frascati CEA, Cadarache IPP, Jülich IPP, Garching ASCR, Czech Rep U Quebec J.W. Berkery Department of Applied Physics, Columbia University, New York, NY, USA NSTX Monday Physics Meeting PPPL, Princeton, NJ April 26th, 2010

  2. XP1020 RFA Analysis • Half day on 4/15: • 24 shots • 16 with AC fields • 7 had enough cycles before disruption for analysis (and Thomson) • 3 long periods • 4 short • RFA analysis code by S.P. Gerhardt

  3. XP1020 RFA analysis XP1020 XP935

  4. XP1020 RFA analysis

  5. XP1020 RFA analysis

  6. βN = 3.5 comparison less stable – higherωφ more stable – lowerωφ

  7. Evolution of RFA vs. time within a single shot, 137819 (Note: βNand rotation are changing at the same time.)

  8. Evolution of RFA vs. time within a single shot, 137816 (Note: βNand rotation are changing at the same time.)

  9. Evolution of RFA vs. time within a single shot, 137825 (Note: βNand rotation are changing at the same time.)

  10. βN = 4.25 comparison

  11. Evolution of RFA vs. time within a single shot, 133797 (Note: βNand rotation are changing at the same time.)

  12. Evolution of RFA vs. time within a single shot, 133798 (Note: βNand rotation are changing at the same time.)

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