| Autor: |
Alessandro Macor, Jean-Philippe Ansermet, Ying-hui Liu, Stefano Alberti, Damien Fasel, D. Wagner, J.-P. Hogge, M. Silva, K.A. Avramides, I. Pagonakis, Christophe Lievin, Minh Quang Tran, Trach-Minh Tran, Stefan Kern |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
2009 34th International Conference on Infrared, Millimeter, and Terahertz Waves. |
| DOI: |
10.1109/icimw.2009.5324906 |
| Popis: |
We report on the design of a modular low-power (10–50W) high-frequency gyrotron (265–530GHz) for DNP enhanced Solid-State NMR spectroscopy. With the view of covering a wide range of frequencies, a 9.7T helium-free superconducting magnet (SCM) is planned for the gyrotron operation on either the fundamental or second harmonic of the electron cyclotron frequency. The gyrotron design is based on a triode electron gun (V k =15kV, I b =100mA, V a = 6–8kV) which is very flexible for adapting the electron beam properties to a wide variety of cavities operating at the fundamental or at the second harmonic. The gyrotron is designed for a lateral output with an internal Vlasov-type converter. The reference parameters for application of DNP-enhanced NMR spectroscopy on a 400MHz (1H) spectrometer are optimized with a RF frequency tunability corresponding to twice the proton NMR frequency. The modularity of the construction of the gyrotron allows for the possibility of changing only some elements like the cavity-uptaper system in order to adapt to the wide range of NMR spectrometers existing at EPFL. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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