1 XP720: EBW Emission in H-Mode Plasmas S.J. Diem Presented at the 2007 NSTX Results Review July 23-24, 2007.

Slides:

Advertisements

Similar presentations

ASIPP Characteristics of edge localized modes in the superconducting tokamak EAST M. Jiang Institute of Plasma Physics Chinese Academy of Sciences The.

Advertisements

The role of magnetic equilibria in determining ECE in MAST J. Preinhaelter 1), V. Shevchenko 2), M. Valovič 2), H. Wilson 2), J. Urban 1), P. Pavlo 1),

3D microwave simulation in fusion plasmas Tom WilliamsNSTX-U Monday Physics Meeting, 18 th Nov /23 Tom Williams 1,2 Alf Köhn.

Design and tomography test of edge multi-energy soft X-ray diagnostics on KSTAR PPPL, Feb. 18, 2014 Juhyeok Jang*, Seung Hun Lee, H. Y. Lee, Joohwan Hong,

Lesson 7: Remote Sensing Dr Andrew Ketsdever MAE 5595.

13th IEA/RFP Workshop – Stockholm October 9-11, D characterization of thermal core topology changes in controlled RFX-mod QSH states A. Alfier on.

1 Electron Bernstein Wave Research and Plans Gary Taylor Presentation to the 16th NSTX Program Advisory Committee September 9, 2004.

1 ST workshop 2005 Numerical modeling and experimental study of ICR heating in the spherical tokamak Globus-M O.N.Shcherbinin, F.V.Chernyshev, V.V.Dyachenko,

6 th Japan-Korea Workshop on Theory and Simulation of Magnetic Fusion Plasmas Hyunsun Han, G. Park, Sumin Yi, and J.Y. Kim 3D MHD SIMULATIONS.

Remote Sensing Microwave Remote Sensing. 1. Passive Microwave Sensors ► Microwave emission is related to temperature and emissivity ► Microwave radiometers.

Profile Measurement of HSX Plasma Using Thomson Scattering K. Zhai, F.S.B. Anderson, J. Canik, K. Likin, K. J. Willis, D.T. Anderson, HSX Plasma Laboratory,

1 JBW-NSTX 9/10/02 Reflectometer Measurements of the Plasma Edge in front of the HHFW antennas John Wilgen, David Swain, Greg Hanson, Phil Ryan Oak Ridge.

Edge ECE measurements with the AUG CTS receiver and the effects of ELMs during H-mode Morten Stejner.

XP NSTX Results Review Beam Modulation Effects on Ion Power Balance XP 737 P.W.Ross.

30 th EPS conference, St. Petersburg, Russia, July, 7-11, 2003 K.M.Likin On behalf of HSX Team University of Wisconsin-Madison, USA Comparison of Electron.

The principle of SAMI and some results in MAST 1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, Anhui, , China 2. Culham Centre.

17th International Stellarator / Heliotron Workshop Princeton, USA Overdense Plasma Operation in WEGA Stellarator Matthias Otte, H.P. Laqua, S. Marsen,

1 Results and analysis of Gas Puff Imaging experiments in NSTX: turbulence, L-H transitions, ELMs and other phenomena R.J. Maqueda Nova Photonics S.J.

NSTX High-k Scattering System on NSTX: Status and Plan* H.K. Park 1, W. Lee 1, E. Mazzucato 1, D.R. Smith 1, C.W. Domier 2, W. Horton 3, S. Kaye 1, J.

2 The Neutral Particle Analyzer (NPA) on NSTX Scans Horizontally Over a Wide Range of Tangency Angles Covers Thermal ( keV) and Energetic Ion.

Pellet Charge Exchange Measurement in LHD & ITER ITPA Tohoku Univ. Tetsuo Ozaki, P.Goncharov, E.Veschev 1), N.Tamura, K.Sato, D.Kalinina and.

Supported by Columbia U Comp-X General Atomics INEL Johns Hopkins U LANL LLNL Lodestar MIT Nova Photonics NYU ORNL PPPL PSI SNL UC Davis UC Irvine UCLA.

Advances In High Harmonic Fast Wave Heating of NSTX H-mode Plasmas P. M. Ryan, J-W Ahn, G. Chen, D. L. Green, E. F. Jaeger, R. Maingi, J. B. Wilgen - Oak.

MAST V.Shevchenko et al, ISTW 2006, October 2006, Chengdu, China EBW Experiments on MAST V. Shevchenko 1, G. Cunningham 1, A. Gurchenko 2, E. Gusakov.

Measurement of toroidal rotation velocity profiles in KSTAR S. G. Lee, Y. J. Shi, J. W. Yoo, J. Seol, J. G. Bak, Y. U. Nam, Y. S. Kim, M. Bitter, K. Hill.

J. Boedo, UCSD Fast Probe Results and Plans By J. Boedo For the UCSD and NSTX Teams.

On the Structure of Magnetic Field and Radioemission of Sunspot-related Source in Solar Active Region T. I. Kaltman, V. M. Bogod St. Petersburg branch.

HL-2A Heating & Current Driving by LHW and ECW study on HL-2A Bai Xingyu, HL-2A heating team.

CALIBRATION OF THE STEREO ANTENNAS AT LOW FREQUENCIES To measure Electric Fields To measure density fluctuations especially in the ion cyclotron frequency.

1 EBW & HHFW Research - G. Taylor PAC-19 2/23/06 EBW & HHFW Research (Including EBW Collaborations with MAST & P EGASUS ) Gary Taylor presented on behalf.

11/12/2004J. Boedo APS 04 Reciprocating Probe Edge/SOL Profiles in NSTX J. Boedo H. Kugel, D. Rudakov, H. Ji, T. Carter, N. Crocker, D. Rudakov, M. Umansky,

Integrated Simulation of ELM Energy Loss Determined by Pedestal MHD and SOL Transport N. Hayashi, T. Takizuka, T. Ozeki, N. Aiba, N. Oyama JAEA Naka TH/4-2.

Dependence of Pedestal Structure on Ip and Bt A. Diallo, R. Maingi, S. Zweben, B.P. LeBlanc, B. Stratton, J. Menard, S. Gerhardt, J. Canick, A. McClean,

Changes in Edge Turbulence with  * and Toroidal Rotation Input in NSTX M. Gilmore, S. Kubota, W.A. Peebles, and X.V. Nguyen Electrical Engineering Dept.,

Summary of RF Work To Date G. Taylor NSTX Monday Physics Meeting June 21, 2010 NSTX Supported by 1.

Edge Turbulence in High Density Ohmic Plasmas on NSTX K.M. Williams, S.J. Zweben, J. Boedo, R. Maingi, C.E. Bush NSTX XP Presentation Draft 5/25/06.

04/06/07I.Larin pi0 systematic error 1  0 error budget Completed items (review) Updated and new items (not reported yet) Items to be completed.

47th Annual Meeting of the Division of Plasma Physics, October 24-28, 2005, Denver, Colorado ECE spectrum of HSX plasma at 0.5 T K.M.Likin, H.J.Lu, D.T.Anderson,

FY WEP TSG Goals & WEP-Relevant Diagnostic Upgrades NSTX Supported by WEP TSG Meeting September 14,

1PAC37, non-inductive ramp-up, Francesca Poli, Jan Francesca Poli, Gary Taylor for the Integrated Scenarios science group ECH/EBWH Research Plans.

Calibration of energies at the photon collider Valery Telnov Budker INP, Novosibirsk TILC09, Tsukuba April 18, 2009.

T. Biewer, March 3 rd, 2003NSTX Physics Meeting Measurements of Edge Impurity Ion Dynamics During RF Heating T. M. Biewer, R.E. Bell March 3 rd, 2003 NSTX.

Correlation reflectometry for pitch angle measurements on NSTX 2005/7/20 A. Ejiri Univ. Tokyo Outline Correlation reflectometry and pitch angle measurement.

F. Caspers, S. Federmann, E. Mahner, B. Salvant, D. Seebacher 1.

Scaling experiments of perturbative impurity transport in NSTX D. Stutman, M. Finkenthal Johns Hopkins University J. Menard, E. Synakowski, B. Leblanc,R.

1 Electron Bernstein Wave Physics on NSTX - Taylor Electron Bernstein Wave Physics on NSTX G. Taylor, J.B. Caughman, M.D. Carter, S. Diem, P.C. Efthimion,

Initial Results from the Scintillator Fast Lost Ion Probe D. Darrow NSTX Physics Meeting February 28, 2005.

Simulation of Turbulence in FTU M. Romanelli, M De Benedetti, A Thyagaraja* *UKAEA, Culham Sciance Centre, UK Associazione.

5.4 Stored Energy Crashes  Diamagnetic loop shows the plasma energy crashes at low plasma density  ECE signals are in phase with the energy crashes 

Pedestal Characterization and Stability of Small-ELM Regimes in NSTX* A. Sontag 1, J. Canik 1, R. Maingi 1, J. Manickam 2, P. Snyder 3, R. Bell 2, S. Gerhardt.

Neutral beam ion loss measurement and modeling for NSTX D. S. Darrow Princeton Plasma Physics Laboratory American Physical Society, Division of Plasma.

XP 514: Thermal Electron Bernstein Wave Conversion to O-Mode at GHz G. Taylor, P. Efthimion, J. Wilgen, J. Caughman Goals for this experiment: –Measure.

1 NSTX Electron Bernstein Wave Emission Measurements Gary Taylor NSTX Results Review September 20-21, 2004.

Fast 2-D Tangential Imaging of Edge Turbulence: Neon Mantle (draft XP) R. J. Maqueda, S. J. Zweben, J. Strachan C. Bush, D. Stutman, V. Soukhanovskii Goal:

HT-7 Proposal of the investigation on the m=1 mode oscillations in LHCD Plasmas on HT-7 Exp2005 ASIPP Youwen Sun, Baonian Wan and the MHD Team Institute.

NSTX S. A. Sabbagh XP407: Passive Stabilization Physics of the RWM in High  N ST Plasmas – 4/13/04  Goals  Define RWM stability boundary in (V , 

Hard X-rays from Superthermal Electrons in the HSX Stellarator Preliminary Examination for Ali E. Abdou Student at the Department of Engineering Physics.

NSTX APS-DPP: SD/SMKNov Abstract The transport properties of NSTX plasmas obtained during the 2008 experimental campaign have been studied and.

= 2·10 18 m -3 T e (0) = 0.4 keV ECH and ECE on HSX Stellarator K.M.Likin, A.F.Almagri, D.T.Anderson, F.S.B.Anderson, C.Deng 1, C.W.Domier 2, R.W.Harvey.

Long Pulse High Performance Plasma Scenario Development for NSTX C. Kessel and S. Kaye - providing TRANSP runs of specific discharges S.

1 Program & Plans for EBW and HHFW Research - J. Hosea & G. Taylor - NSTX PAC-21 - January 17-19, 2007 Supported by Office of Science Culham Sci Ctr U.

Member of the Helmholtz Association T. Zhang | Institute of Energy Research – Plasma Physics | Association EURATOM – FZJ Radial Correlation Analysis of.

T. Biewer, Sep. 20 th, 2004 NSTX Results Review of 11 Edge Ion Heating by Launched HHFW in NSTX T.M. Biewer, R.E. Bell, S. Diem, P.M. Ryan, J.R.

Cassini Huygens EECS 823 DIVYA CHALLA.

DALHM MEETING July 29-30, 2004 FORTH Heraklion, Crete, GREECE

JongGab Jo, H. Y. Lee, Y. H. An, K. J. Chung and Y. S. Hwang*

ECE Diagnostic on the HSX Stellarator

Diagnosing kappa distribution in the solar corona with the polarized microwave gyroresonance radiation Alexey A. Kuznetsov1, Gregory D. Fleishman2 1Institute.

Andrew Kirk on behalf of

Stereoscopic Pellet Imaging

Presentation transcript:

1 XP720: EBW Emission in H-Mode Plasmas S.J. Diem Presented at the 2007 NSTX Results Review July 23-24, 2007

2 XP 720: EBW emission in H-mode plasmas Measure 8-36 GHz thermal EBW emission via oblique B-X-O coupling Study behavior of EBWs emitted from H-mode plasmas at f ce, 2f ce and 3f ce Experiment had three objectives: –Study effect of collisions on B-X-O mode coupling –Investigate dependence of B-X-O coupling on plasma parameters –Study how bootstrap current at H-mode pedestal change fields field pitch at UHR

3 Remotely Steered EBW Antennas Allow Angular Mapping of f ce & 2 f ce B-X-O Coupling Window Beam waist ±10° scan in poloidal and toroidal directions Acceptance angle: 8-18 GHz antenna ~ 22° GHz antenna ~ 14° Antenna spatial scan region L n ~3 cm L n ~7 cm

4 Preliminary H-mode results show good f ce and 2f ce B-X-O coupling in high   f BS plasmas Target plasma: I p =0.8 MA,  ~2.5, T e ~1 keV, and n e (0)~2-4x10 13 cm -3 Preliminary experimental EBW transmission efficiency given by the ratio T rad /T e (0): –~30-50% for f ce =18 GHz –~20-40% for 2f ce =28 GHz t=0.3 s L H

5 Detected EBW Emission Sensitive to Dr sep Dr sep reduction of 2 cm provided controlled z 0 scan T rad decreased from ~350 eV to ~100 eV with 8 cm decrease in z 0 Results similar to rapid EBE decay observed in 2006 H-modes after L H transition f ce =18 GHz f ce =15.5 GHz Z 0 [cm] L H

6 Increase in EBW transmission efficiency observed with LITER conditioning T e (0)~ keV T rad increased from 40 eV (no Li) to ~300 eV for f ce = 18 GHz emission Li may decrease L n at at EBW mode conversion layer, widening EBW transmission window Similar trend observed for 2f ce frequencies, 0 mg/min, 11.4 mg/min, 19.1 mg/min Density Scale Length

7 More work needed to understand EBW mode coupling physics Analyze the following: –Antenna scan data –Spiral antenna data Analyze data from f ce system –Do not have an absolute calibration for 8-18 GHz (f ce ) radiometer because of damage to microwave amplifiers at the end of run campaign; –Relative T rad data trends analysis during run still possible –Harmonic system measured absolutely calibrated f ce =16-18 GHz Correlation analysis of high time resolution reflectometer data Perform comparison of experimental data to EBE simulation code results