Zobrazeno 1 - 10
of 49
pro vyhledávání: '"Houjun Qian"'
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:
Peng-Wei Huang, Houjun Qian, Ye Chen, Matthias Gross, Igor Isaev, Christian Koschitzki, Mikhail Krasilnikov, Shankar Lal, Sven Lederer, Xiangkun Li, Osip Lishilin, David Melkumyan, Laura Monaco, Paolo Michelato, Raffael Niemczyk, Anne Oppelt, Daniele Sertore, Hamed Shaker, Guan Shu, Frank Stephan, Chuanxiang Tang, Grygorii Vashchenko
Publikováno v:
Physical Review Accelerators and Beams, Vol 25, Iss 5, p 053401 (2022)
The next generation of accelerator based scientific facilities, such as the megahertz repetition rate free electron laser and electron-ion collider, relies on photoelectron sources of high peak and high average brightness. Therefore, photocathodes wi
Externí odkaz:
https://doaj.org/article/5d95fc3a3db24f49a0f8176f43c21509
Autor:
Peng-Wei Huang, Houjun Qian, Ye Chen, Daniele Filippetto, Matthias Gross, Igor Isaev, Christian Koschitzki, Mikhail Krasilnikov, Shankar Lal, Xiangkun Li, Osip Lishilin, David Melkumyan, Raffael Niemczyk, Anne Oppelt, Fernando Sannibale, Hamed Shaker, Guan Shu, Frank Stephan, Chuanxiang Tang, Grygorii Vashchenko, Weishi Wan
Publikováno v:
Physical Review Accelerators and Beams, Vol 23, Iss 4, p 043401 (2020)
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low thermal emittance cathode developments and diagnostics are very important. Conventional thermal emittance
Externí odkaz:
https://doaj.org/article/3736e448bb7b4d13bdca267191a5ef6e
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 12, p 123403 (2019)
In state of the art photoemission electron sources, the transverse emittance of the electron beam is approaching its intrinsic value from the cathode. To reduce the intrinsic emittance, it is straightforward to tune the photon energy of the drive las
Externí odkaz:
https://doaj.org/article/35300afde620461197ad6e9254e1a011
Autor:
Frank Stephan, Matthias Gross, Anna Grebinyk, Zakaria Aboulbanine, Zohrab Amirkhanyan, Volker Budach, Vincent Henrique Ehrhardt, Angeles Faus-Golfe, Marcus Frohme, Jean-Francois Germond, James David Good, Florian Grüner, David Kaul, Mikhail Krasilnikov, Ron Leavitt, Wim Leemans, Xiangkun Li, Gregor Loisch, Frieder Müller, Georg Müller, Frank Obier, Anne Oppelt, Sebastian Philipp, Houjun Qian, Judith Reindl, Felix Riemer, Martin Sack, Michael Schmitz, Tobias Schnautz, Andreas Schüller, Theresa Staufer, Christian Stegmann, Gohar Tsakanova, Marie-Catherine Vozenin, Hans Weise, Steven Worm, Daniel Zips
Publikováno v:
Physica Medica. 104:174-187
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a204e8e1188c517d6bc8189f26ebfa0
https://doi.org/10.1016/j.ejmp.2022.10.026
https://doi.org/10.1016/j.ejmp.2022.10.026
Autor:
Gregor Loisch, Ye Chen, Christian Koschitzki, Houjun Qian, Matthias Gross, Adrian Hannah, Andreas Hoffmann, Davit Kalantaryan, Mikhail Krasilnikov, Sven Lederer, Xiangkun Li, Osip Lishilin, David Melkumyan, Laura Monaco, Raffael Niemczyk, Anne Oppelt, Daniele Sertore, Frank Stephan, Reza Valizadeh, Grygorii Vashchenko, Tobias Weilbach
Publikováno v:
Applied physics letters 120, 104102 (2022). doi:10.1063/5.0078927
Applied physics letters 120(10), 104102 (2022). doi:10.1063/5.0078927
Applied physics letters 120(10), 104102 (2022). doi:10.1063/5.0078927
Applied physics letters 120, 104102 (2022). doi:10.1063/5.0078927
Electron photoinjectors provide high-brightness electron beams to numerous research applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes ar
Electron photoinjectors provide high-brightness electron beams to numerous research applications in physics, chemistry, material, and life sciences. Semiconductor photocathodes ar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::70d9c01db124def9b4bba6dbf2c1007c
https://bib-pubdb1.desy.de/record/474839
https://bib-pubdb1.desy.de/record/474839
Autor:
Frank Stephan, R. Niemczyk, C. Koschitzki, N. Chaisueb, Grygorii Vashchenko, Xin Li, H. Shaker, A. Lueangaramwong, T. Weilbach, Anne Oppelt, S. Mohanty, Houjun Qian, Mikhail Krasilnikov, G. Shu, G. Georgiev, S. Philipp, V. Paramonov, James Good, O. Lishilin, Matthias Gross, N. Aftab, Prach Boonpornprasert
Publikováno v:
Nuclear instruments & methods in physics research / A 1004, 165344 (1-9) (2021). doi:10.1016/j.nima.2021.165344
Nuclear instruments & methods in physics research / A 1004, 165344 (1-9) (2021). doi:10.1016/j.nima.2021.165344
Multiphysics simulations are widely used in designing high average power RF cavities, which require iterations of RF simulation, ther
Multiphysics simulations are widely used in designing high average power RF cavities, which require iterations of RF simulation, ther
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45d4cd1471086912521ba59d16d92e9e
https://bib-pubdb1.desy.de/record/458708
https://bib-pubdb1.desy.de/record/458708
Autor:
Osip Lishilin, Mikhail Krasilnikov, Guan Shu, David Melkumyan, Fernando Sannibale, Igor Isaev, F. Stephan, Peng-Wei Huang, Raffael Niemczyk, Grygorii Vashchenko, Ye Chen, Xiangkun Li, Hamed Shaker, Shankar Lal, Matthias Gross, Christian Koschitzki, A. Oppelt, Houjun Qian, Chuanxiang Tang, Weishi Wan, Daniele Filippetto
Publikováno v:
Physical Review Accelerators and Beams, vol 23, iss 4
Physical review accelerators and beams 23(4), 043401 (2020). doi:10.1103/PhysRevAccelBeams.23.043401
Physical Review Accelerators and Beams, Vol 23, Iss 4, p 043401 (2020)
Physical review accelerators and beams 23(4), 043401 (2020). doi:10.1103/PhysRevAccelBeams.23.043401
Physical Review Accelerators and Beams, Vol 23, Iss 4, p 043401 (2020)
Physical review accelerators and beams 23(4), 043401 (2020). doi:10.1103/PhysRevAccelBeams.23.043401
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low
In state of the art photoinjector electron sources, thermal emittance from photoemission dominates the final injector emittance. Therefore, low
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b035fd03705f42cedacd4d9b3a3af6d
http://arxiv.org/abs/2002.06837
http://arxiv.org/abs/2002.06837