Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Gowri Adhikari"'
Autor:
Anusorn Lueangaramwong, Ekkachai Kongmon, Xiangkun Li, Prach Boonpornprasert, Georgi Georgiev, Mikhail Krasilnikov, Zakaria Aboulbanine, Gowri Adhikari, Namra Aftab, Matthias Gross, Raffael Niemczyk, Anne Oppelt, Houjun Qian, Christopher Richard, Grygorii Vashchenko, Tobias Weilbach, Frank Stephan
Publikováno v:
Applied Sciences, Vol 14, Iss 5, p 1982 (2024)
The high peak current of the electron beam was found to be the key parameter for the THz SASE FEL at the Photo Injector Test facility at DESY in Zeuthen (PITZ). A multipurpose bunch compressor was implemented at PITZ to expand the parameter space of
Externí odkaz:
https://doaj.org/article/e9e040d6522a4004bd298060602158ac
Autor:
Houjun Qian, Mikhail Krasilnikov, Zakaria Aboulbanine, Gowri Adhikari, Namra Aftab, Prach Boonpornpras, Georgi Georgiev, James Good, Matthias Gross, Christian Koschitzki, Xiangkun Li, Osip Lishilin, Anusorn Lueangaramwong, Raffael Niemczyk, Anne Oppelt, Guan Shu, Frank Stephan, Grygorii Vashchenko, Tobias Weilbach
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 10, p 103401 (2022)
Photoinjectors are the main high brightness electron sources for x-ray free electron lasers (XFELs). Photoinjector emittance reduction is one of the key knobs for improving XFEL lasing, so precise emittance measurement is critical. It is well known t
Externí odkaz:
https://doaj.org/article/63098e987d354561878ddf3b2e82007d
Autor:
Houjun Qian, Mikhail Krasilnikov, Anusorn Lueangaramwong, Xiangkun Li, Osip Lishilin, Zakaria Aboulbanine, Gowri Adhikari, Namra Aftab, Prach Boonpornprasert, Georgi Georgiev, James Good, Matthias Gross, Christian Koschitzki, Raffael Niemczyk, Anne Oppelt, Guan Shu, Frank Stephan, Grygorii Vashchenko, Tobias Weilbach
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 8, p 083401 (2022)
Slice energy spread is one of the key parameters in free electron laser optimizations, but its accurate measurement is not straightforward. Two recent studies from high energy (≥100 MeV) photoinjectors at SwissFEL and European x-ray free electron l
Externí odkaz:
https://doaj.org/article/bc4960715200421e97811ff11d4dfe47
Autor:
W Andreas Schroeder, Gowri Adhikari
Publikováno v:
New Journal of Physics, Vol 21, Iss 3, p 033040 (2019)
A one-step photoemission analysis is developed, using the exact one-dimensional quantum solution for transmission over and through a triangular barrier presented by Forbes and Deane (2011 Proc. R. Soc. A 467 2927), to evaluate the emission properties
Externí odkaz:
https://doaj.org/article/e23a6d0f8a3b4c8ebef02dedbeabf4fb
Autor:
Hanjong Paik, Tomas Arias, Ivan Bazarov, Luca Cultrera, Edward Lochocki, D. G. Schlom, Christopher M. Pierce, Jared Maxson, Alice Galdi, Christopher Parzyck, Kyle Shen, Johannes Kevin Nangoi, Gowri Adhikari, Walter Andreas Schroeder
Publikováno v:
The European Physical Journal Special Topics. 228:713-718
Recent research on photocathodes for photoinjectors has focused on the understanding of the photoemission process at low energy (i.e. at photon energy close to the material’s work function) as well as on the study of ordered and innovative photocat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e028766c654009649e45c9f560941a41
https://doi.org/10.1140/epjst/e2019-800175-x
https://doi.org/10.1140/epjst/e2019-800175-x
Autor:
J. Kevin Nangoi, Jared Maxson, Gowri Adhikari, W. Andreas Schroeder, Siddharth Karkare, Tomas Arias, Howard A. Padmore
Publikováno v:
Physical review letters, vol 125, iss 5
Achieving a low mean transverse energy or temperature of electrons emitted from the photocathode-based electron sources is critical to the development of next-generation and compact x-ray free electron lasers and ultrafast electron diffraction, spect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bfd633b34a802166fe8c741001b571a
Autor:
Gongxiaohui Chen, Kiran Kumar Kovi, Sergey Antipov, Gowri Adhikari, Andreas Schroeder, Linda Spentzouris, Sergey V. Baryshev
Publikováno v:
2018 IEEE International Conference on Plasma Science (ICOPS).
There is a strong motivation to develop and understand novel materials with the potential to be utilized as photocathodes, as these could have desirable photoemission properties for research and industrial applications. Nitrogen-incorporated ultranan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a159227b80b340c7661a22937ebb2cc7
https://doi.org/10.1109/icops35962.2018.9575224
https://doi.org/10.1109/icops35962.2018.9575224
Autor:
Kiran Kumar Kovi, Linda Spentzouris, Chunguang Jing, Gongxiaohui Chen, Sergey V. Baryshev, Gowri Adhikari, Sergey Antipov, W. Andreas Schroeder
Nitrogen incorporated ultrananocrystalline diamond ((N)UNCD) could be an enabling material platform for photocathode applications due to its high emissivity. While the quantum efficiency (QE) of UNCD was reported by many groups, no experimental measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d1a161f2db274704cd195710f389dc6
Publikováno v:
AIP Advances, Vol 9, Iss 6, Pp 065305-065305-7 (2019)
The spectral dependence of the mean transverse energy and quantum efficiency of photoemission from a single-crystal Rh(110) photocathode are determined at 300K using the solenoid scan technique and a sub-picosecond laser-based UV radiation source tun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea221ae8b82f6ee851679d3bdb56c6d7
https://doi.org/10.1063/1.5098550
https://doi.org/10.1063/1.5098550
Autor:
Gowri Adhikari, W. Andreas Schroeder
Publikováno v:
New Journal of Physics. 21:033040
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d715db02d4b90461f5af57e96e038187
https://doi.org/10.1088/1367-2630/ab0ce2
https://doi.org/10.1088/1367-2630/ab0ce2