Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Sudheer Jawla"'
Autor:
Guangjiang Li, Elliot Claveau, Jeremy Genoud, Sudheer Jawla, Michael A. Shapiro, Richard J. Temkin
Publikováno v:
2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::455579ff2dd13e2176476c4794488603
https://doi.org/10.1109/irmmw-thz50927.2022.9896098
https://doi.org/10.1109/irmmw-thz50927.2022.9896098
Publikováno v:
J Infrared Millim Terahertz Waves
The effect of reflection is studied experimentally and theoretically on a high-power 110 GHz gyrotron operating in the TE(22,6) mode in 3 μs pulses at 96 kV, 40 A. The experimental setup allows variation of the reflected power from 0 to 33 % over a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be7c83af78a32a75d525723e293cfe1d
https://europepmc.org/articles/PMC8291730/
https://europepmc.org/articles/PMC8291730/
Publikováno v:
2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
The effect of reflection is studied experimentally on a 110 GHz, 1.2 MW short-pulse gyrotron. The experimental setup allows variation of the reflection from 0 to 35% over a range of gyrotron operating conditions. For high-efficiency operating points,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b33bbcbea132932b28636bd94f3f1833
https://doi.org/10.1109/irmmw-thz46771.2020.9370718
https://doi.org/10.1109/irmmw-thz46771.2020.9370718
Publikováno v:
2020 IEEE 21st International Conference on Vacuum Electronics (IVEC).
The phase stability of a 140 GHz, 1 kW pulsed gyro-amplifier system and its dependence on the cathode voltage were experimentally measured. The phase was determined to be stable both pulse-to-pulse and during each pulse. The phase shift with voltage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0da7b84a3495259e4f896f6695fa47a
https://doi.org/10.1109/ivec45766.2020.9520640
https://doi.org/10.1109/ivec45766.2020.9520640
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:4719-4728
The elliptical polarization produced by a pair of sinusoidally profiled miter-bend grating polarizers has been measured experimentally and found to be in excellent agreement with theory. The polarizers were designed to be used at 170 GHz in the miter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4549752adf63e06534877b63aed922fe
https://doi.org/10.1109/tap.2018.2851377
https://doi.org/10.1109/tap.2018.2851377
Publikováno v:
IEEE Trans Electron Devices
We report the design and experimental demonstration of a frequency tunable terahertz gyrotron at 527 GHz built for an 800-MHz dynamic nuclear polarization enhanced nuclear magnetic resonance (DNP-NMR) spectrometer. The gyrotron is designed at the sec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1f33d7a4bc2712d2df417c3644dcd64
https://europepmc.org/articles/PMC7040565/
https://europepmc.org/articles/PMC7040565/
Autor:
Richard J. Temkin, Sami Tantawi, Bruno Spataro, Julian Picard, Valery Dolgashev, Sudheer Jawla, Emilio A. Nanni, Mohamed A. K. Othman, S. C. Schaub
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
We report initial high-gradient testing results of a 110 GHz single-cell standing wave accelerating cavity powered by a 1 MW gyrotron. The cavity is fed with 10 ns, 100s of kilowatt pulses, and achieved a field gradient up to 225 MV/m. We also report
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1de073b3a317719cb7963f01700ea09b
https://doi.org/10.1109/irmmw-thz.2019.8874329
https://doi.org/10.1109/irmmw-thz.2019.8874329
Autor:
Christina Redfield, Chen Yang, Harald Schwalbe, Richard J. Temkin, Sudheer Jawla, Robert G. Griffin, Christy George, Marcel Reese, J Tassilo Grün
Publikováno v:
J Magn Reson
We describe the design and construction of a modular, triple-resonance, fully balanced, DNP-MAS probe based on transmission line technology and its integration into a 500 MHz/330 GHz DNP-NMR spectrometer. A novel quantitative probe design and charact
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::919da97a095f7f65c14349a395d77325
https://pubmed.ncbi.nlm.nih.gov/31505305
https://pubmed.ncbi.nlm.nih.gov/31505305
Publikováno v:
2019 International Vacuum Electronics Conference (IVEC).
We have built a frequency tunable 527 GHz gyrotron for an 800 MHz DNP-NMR spectrometer. The gyrotron is designed at the second harmonic $(\pmb{\omega=2}\pmb{\omega}_{\mathbf{c}})$ of the electron cyclotron frequency. It produces ~10 W continuous micr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a75c6f70aa500369e5b72a011479686
https://doi.org/10.1109/ivec.2019.8744878
https://doi.org/10.1109/ivec.2019.8744878
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 42:557-557
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7708a3d1a069f6d4a7e73c0cf7d5b78b
https://doi.org/10.1007/s10762-021-00783-w
https://doi.org/10.1007/s10762-021-00783-w