Academic Journal
Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX
| العنوان: | Low-noise, high-speed detector development for optical turbulence fluctuation measurements for NSTX |
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| المؤلفون: | Jaehnig, K., McKee, G. R., Smith, D., Winz, G., Schoenbeck, N. L., Uzun-Kaymak, I. U., Ellington, S. D., Fonck, R. J. |
| سنة النشر: | 2010 |
| الوصف: | 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. (C) 2010 American Institute of Physics. [doi:10.1063/1.3483196] |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | 4bca3c24-1f5b-4cc7-b126-fccb07d701bf; https://avesis.metu.edu.tr/publication/details/4bca3c24-1f5b-4cc7-b126-fccb07d701bf/oai |
| DOI: | 10.1063/1.3483196 |
| الاتاحة: | https://doi.org/10.1063/1.3483196 https://avesis.metu.edu.tr/publication/details/4bca3c24-1f5b-4cc7-b126-fccb07d701bf/oai |
| Rights: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.2CE1ABFF |
| قاعدة البيانات: | BASE |
| DOI: | 10.1063/1.3483196 |
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