Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Andy Haase"'
Autor:
Mark A. Kemp, Matt Franzi, Andy Haase, Erik Jongewaard, Matthew T. Whittaker, Michael Kirkpatrick, Robert Sparr
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Designing high radiation efficiency antennas for portable transmitters in low frequency communication systems remains a challenge. Here, the authors report on using piezoelectricity to more efficiently radiate while achieving a bandwidth eighty three
Externí odkaz:
https://doaj.org/article/11b35d0e6a1c476baac096a0be2f2d29
Autor:
Matthew Franzi, Mark A. Kemp, Erik Jongewaard, Michael Kirkpatrick, Matthew T. Whittaker, Robert Sparr, Andy Haase
Publikováno v:
Nature Communications
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Very low frequency communication systems (3 kHz–30 kHz) enable applications not feasible at higher frequencies. However, the highest radiation efficiency antennas require size at the scale of the wavelength (here, >1 km), making portable transmitte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb956e87d347a3d0476a2434d4ab1f0
https://pubmed.ncbi.nlm.nih.gov/30979897
https://pubmed.ncbi.nlm.nih.gov/30979897
Autor:
Thomas Habermann, Mark A. Kemp, P. Kolda, B. Stockwell, Stephan Lenci, Andy Haase, A. Shabazian, Aaron Jensen, Richard Donald Kowalczyk, Erik Jongewaard
Publikováno v:
2017 Eighteenth International Vacuum Electronics Conference (IVEC).
Design of a beam energy recovery system for application to the CPI VKS-8262S S-band klystron is presented. The multi stage pulsed depressed collector optics, mechanical and thermal design, energy recovery modulator, and experimental program will be h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::276ecf44cd539bd312348e355ac4663d
https://doi.org/10.1109/ivec.2017.8289688
https://doi.org/10.1109/ivec.2017.8289688
Publikováno v:
2016 IEEE International Vacuum Electronics Conference (IVEC).
The Core Oscillation Method (COM) and Bunch-Align-Compress (BAC) cavity tuning schemes are discussed and applied to the re-design of the 5045 klystron towards achieving the highest efficiency micro-perveance 2.0 tube ever built.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3df9981b27fc5c1b739a61c801614d10
https://doi.org/10.1109/ivec.2016.7561811
https://doi.org/10.1109/ivec.2016.7561811
Publikováno v:
2015 IEEE International Vacuum Electronics Conference (IVEC).
The 5045 klystron has been in production and accelerating particles at SLAC National Accelerator Laboratory for over 25 years [1]. Although the design has undergone some changes there are still significant opportunities for improvement in performance
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e8f3791d6fe95aa6b1b7a349eb48ac8
https://doi.org/10.1109/ivec.2015.7223738
https://doi.org/10.1109/ivec.2015.7223738
Autor:
A.E. Vlieks, Daryl Sprehn, Aaron Jensen, Chris Adolphsen, Erik Jongewaard, Michael V. Fazio, Andy Haase, Jeff Nielson
Publikováno v:
IVEC 2012.
X-band klystron research and development has been underway at SLAC for over two decades culminating in the current workhorse X-band RF source, the XL-4. The XL-4 traveling wave output structure consists of 4-cells and will be extended to 6-cells to r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b280b927ece73bb1ea140063c69b7d0
https://doi.org/10.1109/ivec.2012.6262070
https://doi.org/10.1109/ivec.2012.6262070
Autor:
Karl Bane, Aaron Jensen, Daryl Sprehn, Zenghai Li, Chris Adolphsen, Alex Burke, Gennady Stupakov, D. Martin, Andy Haase, Erik Jongewaard
Publikováno v:
2011 IEEE International Vacuum Electronics Conference (IVEC).
A review of L-band sheet beam development at SLAC National Accelerator Laboratory's Klystron Department. The measured current density profile of a 40:1 elliptical beam is presented. A review of instabilities discovered while simulating the klystron a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b906388dc1a8fb0916bae88320d827c8
https://doi.org/10.1109/ivec.2011.5746891
https://doi.org/10.1109/ivec.2011.5746891
Publikováno v:
AIP Conference Proceedings.
75 MW X-band klystrons utilizing Periodic Permanent Magnet (PPM) focusing have been undergoing design, fabrication and testing at the Stanford Linear Accelerator Center (SLAC) for almost nine years. The klystron development has been geared toward rea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90647214512ad7768bc7310b42b3d0de
https://doi.org/10.1063/1.2158768
https://doi.org/10.1063/1.2158768