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Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX

Publication ,  Conference
Schoenbeck, NL; Ellington, SD; Fonck, RJ; Jaehnig, K; McKee, GR; Smith, D; Uzun-Kaymak, IU; Winz, G
Published in: Review of Scientific Instruments
October 1, 2010

A new beam emission spectroscopy (BES) diagnostic is under development. Photon-noise limited measurements of neutral beam emissions are achieved using photoconductive photodiodes with a novel frequency-compensated broadband preamplifier. The new BES system includes a next-generation preamplifier and upgraded optical coupling system. Notable features of the design are surface-mount components, minimized stray capacitance, a wide angular acceptance photodiode, a differential output line driver, reduced input capacitance, doubling of the frequency range, net reduced electronic noise, and elimination of the need for a cryogenic cooling system. The irreducible photon noise dominates the noise up to 800 kHz for a typical input power of 60 nW. This new assembly is being integrated into an upgraded multichannel optical detector assembly for a new BES system on the NSTX experiment. © 2010 American Institute of Physics.

Duke Scholars

Published In

Review of Scientific Instruments

DOI

ISSN

0034-6748

Publication Date

October 1, 2010

Volume

81

Issue

10

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
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Schoenbeck, N. L., Ellington, S. D., Fonck, R. J., Jaehnig, K., McKee, G. R., Smith, D., … Winz, G. (2010). Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX. In Review of Scientific Instruments (Vol. 81). https://doi.org/10.1063/1.3483196
Schoenbeck, N. L., S. D. Ellington, R. J. Fonck, K. Jaehnig, G. R. McKee, D. Smith, I. U. Uzun-Kaymak, and G. Winz. “Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX.” In Review of Scientific Instruments, Vol. 81, 2010. https://doi.org/10.1063/1.3483196.
Schoenbeck NL, Ellington SD, Fonck RJ, Jaehnig K, McKee GR, Smith D, et al. Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX. In: Review of Scientific Instruments. 2010.
Schoenbeck, N. L., et al. “Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX.” Review of Scientific Instruments, vol. 81, no. 10, 2010. Scopus, doi:10.1063/1.3483196.
Schoenbeck NL, Ellington SD, Fonck RJ, Jaehnig K, McKee GR, Smith D, Uzun-Kaymak IU, Winz G. Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX. Review of Scientific Instruments. 2010.

Published In

Review of Scientific Instruments

DOI

ISSN

0034-6748

Publication Date

October 1, 2010

Volume

81

Issue

10

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 34 Chemical sciences
  • 09 Engineering
  • 03 Chemical Sciences
  • 02 Physical Sciences