N
N. Bretz
Researcher at Princeton University
Publications - 40
Citations - 939
N. Bretz is an academic researcher from Princeton University. The author has contributed to research in topics: Tokamak & Tokamak Fusion Test Reactor. The author has an hindex of 19, co-authored 40 publications receiving 923 citations.
Papers
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Journal ArticleDOI
Multichannel Thomson scattering apparatus.
TL;DR: A Thomson scattering apparatus for measuring the electron temperature and density along a 90-cm diam of the PLT plasma has been built.
Journal ArticleDOI
A density rise experiment on PLT
J. D. Strachan,N. Bretz,E. Mazzucato,Cris W. Barnes,Cris W. Barnes,D. A. Boyd,D. A. Boyd,Samuel A. Cohen,J. Hovey,R. Kaita,S. S. Medley,G. L. Schmidt,G. D. Tait,Donald E. Voss,Donald E. Voss +14 more
TL;DR: The evolution of the density profile in PLT during intense gas puffing is documented and analysed in this paper, showing that charge exchange processes alone cannot account for the central density rise, and that small-scale density fluctuations are increased, and runaway electron losses are increased during the density rise.
Journal ArticleDOI
Overview of TFTR transport studies
R. J. Hawryluk,V. Arunasalam,Cris W. Barnes,Michael A. Beer,M. G. Bell,R. E. Bell,H. Biglari,Manfred Bitter,R. Boivin,N. Bretz,Robert Budny,C.E. Bush,Chio-Zong Cheng,T. K. Chu,Samuel A. Cohen,Steven Cowley,P. C. Efhimion,R.J. Fonck,E.D. Fredrickson,Harold P. Furth,Robert James Goldston,G. Greene,B. Grek,L. R. Grisham,Gregory W. Hammett,William Heidbrink,K. W. Hill,J.C. Hosea,R. A. Hulse,H. Hsuan,A.C. Janos,D.L. Jassby,F. C. Jobes,David W. Johnson,L. C. Johnson,Jay Kesner,C. Kieras‐Phillips,S. J. Kilpatrick,H.W. Kugel,P.H. La Marche,B. LeBlanc,Dennis M. Manos,D. K. Mansfield,E.S. Marmar,E. Mazzucato,M. McCarthy,Michael E. Mauel,D. C. McCune,K. McGuire,Dale Meade,S. S. Medley,D. R. Mikkelsen,D. A. Monticello,R. W. Motley,D. Mueller,Yoshio Nagayama,G.A. Navratil,Raffi Nazikian,D. K. Owens,Hyeon K. Park,W. Park,S. Paul,F. W. Perkins,S. Pitcher,A. T. Ramsey,M. H. Redi,G. Rewoldt,D. Roberts,A. L. Roquemore,P. H. Rutherford,S.A. Sabbagh,G. Schilling,J.F. Schivell,G. L. Schmidt,S. D. Scott,Joseph Snipes,J. E. Stevens,Brentley Stratton,W. Stodiek,E. J. Synakowski,Yuichi Takase,William Tang,G. Taylor,J.L. Terry,J. Timberlake,H. H. Towner,M. Ulrickson,S. von Goeler,R. M. Wieland,M. Williams,J. R. Wilson,K. L. Wong,Masaaki Yamada,S. Yoshikawa,K. M. Young,M. C. Zarnstorff,S. J. Zweben +96 more
TL;DR: A review of TFTR plasma transport studies is presented in this article, where parallel transport and the confinement of suprathermal ions are found to be relatively well described by theory and the underlying turbulence has been studied using microwave scattering, beam emission spectroscopy and microwave reflectometry over a much broader range in k perpendicular to than previously possible.
Journal ArticleDOI
Peaked density profiles in circular-limiter H modes on the TFTR Tokamak
C.E. Bush,Robert James Goldston,S. D. Scott,E.D. Fredrickson,K. McGuire,J.F. Schivell,G. Taylor,Cris W. Barnes,M. G. Bell,R. Boivin,N. Bretz,Robert Budny,A. Cavallo,P. C. Efthimion,B. Grek,R.J. Hawryluk,K. Hill,R. A. Hulse,A. Janos,D. W. Johnson,S. Kilpatrick,Dennis M. Manos,D.K. Mansfield,Dale Meade,H. Park,A.T. Ramsey,B. C. Stratton,E.J. Synakowski,H. H. Towner,R. M. Wieland,M.C. Zarnstorff,S.J. Zweben +31 more
TL;DR: Circular-limiter {ital H} modes are obtained on the TFTR tokamak during high-power neutral-beam heating, and the density and pressure profiles are highly peaked at the center.
Journal ArticleDOI
Confinement studies of neutral beam heated discharges in TFTR
M. Murakami,V. Arunasalam,J. D. Bell,M. G. Bell,Manfred Bitter,W. R. Blanchard,F.P. Boody,N. Bretz,Robert Budny,C. E. Bush,J. D. Callen,Joseph L. Cecchi,Samuel Cohen,R. J. Colchin,S.K. Combs,J. Coonrod,S. L. Davis,D. Dimock,H. F. Dylla,P. C. Efthimion,L. C. Emerson,A. C. England,H.P. Eubank,R. J. Fonck,E.D. Fredrickson,Harold P. Furth,L. R. Grisham,S. von Goeler,Robert James Goldston,B. Grek,R. Groebner,R. J. Hawryluk,H. W. Hendel,K. W. Hill,D. L. Hillis,W. W. Heidbrink,R. A. Hulse,David W. Johnson,L. C. Johnson,R. Kaita,R. Kamperschroer,Stanley Kaye,S. J. Kilpatrick,H.W. Kugel,P. H. LaMarche,R. Little,C. H. Ma,Dennis M. Manos,D. K. Mansfield,M. McCarthy,R. T. McCann,D. C. McCune,K. McGuire,Dale Meade,S. S. Medley,S. L. Milora,D. R. Mikkelsen,D. Mueller,E. Nieschmidt,D. K. Owens,V. K. Pare,Hyeon K. Park,B. Prichard,A. T. Ramsey,David A Rasmussen,M. H. Redi,A. L. Roquemore,P.H. Rutherford,N. R. Sauthoff,J.F. Schivell,G. L. Schmidt,S. D. Scott,S. Sesnic,M. Shimada,J. E. Simpkins,J. Sinnis,F. Stauffer,J. D. Strachan,Brentley Stratton,G. D. Tait,G. Taylor,C. E. Thomas,H. H. Towner,M. Ulrickson,R. M. Wieland,J. B. Wilgen,M. Williams,K. L. Wong,S. Yoshikawa,K. M. Young,M. C. Zarnstorff,S. J. Zweben +91 more
TL;DR: The TFTR tokamak has reached its original machine design specifications (Ip=2.5 MA and BT=5.2 T) by operating at low plasma current and low density (ne approximately=1*1019 m-3), high ion temperatures (9+or2 keV) and rotation speeds (7*105 m/s) have been achieved during injection.