Preliminary Results from XP1020 RFA Measurements J.W. Berkery Department of Applied Physics, Columbia University, New York, NY, USA NSTX Monday Physics.

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Presentation transcript:

Preliminary Results from XP1020 RFA Measurements J.W. Berkery Department of Applied Physics, Columbia University, New York, NY, USA NSTX Monday Physics Meeting PPPL, Princeton, NJ April 26 th, 2010 NSTX Supported by 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

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 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 XP1020 RFA Analysis 2

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 XP1020 RFA analysis 3 XP935 XP1020

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 XP1020 RFA analysis 4

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 XP1020 RFA analysis 5

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 β N = 3.5 comparison 6 less stable – higher ω φ more stable – lower ω φ

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 Evolution of RFA vs. time within a single shot, (Note: β N and rotation are changing at the same time.)

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 Evolution of RFA vs. time within a single shot, (Note: β N and rotation are changing at the same time.)

NSTX XP1020 – RWM Physics (Berkery)April 26,

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 Evolution of RFA vs. time within a single shot, (Note: β N and rotation are changing at the same time.)

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 β N = 4.25 comparison 11

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 Evolution of RFA vs. time within a single shot, (Note: β N and rotation are changing at the same time.)

NSTX XP1020 – RWM Physics (Berkery)April 26, 2010 Evolution of RFA vs. time within a single shot, (Note: β N and rotation are changing at the same time.)

NSTX XP1020 – RWM Physics (Berkery)April 26,

NSTX XP1020 – RWM Physics (Berkery)April 26,