Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Ryan Roussel"'
Autor:
Fuhao Ji, Auralee Edelen, Ryan Roussel, Xiaozhe Shen, Sara Miskovich, Stephen Weathersby, Duan Luo, Mianzhen Mo, Patrick Kramer, Christopher Mayes, Mohamed A. K. Othman, Emilio Nanni, Xijie Wang, Alexander Reid, Michael Minitti, Robert Joel England
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)
Abstract Ultrafast electron diffraction using MeV energy beams(MeV-UED) has enabled unprecedented scientific opportunities in the study of ultrafast structural dynamics in a variety of gas, liquid and solid state systems. Broad scientific application
Externí odkaz:
https://doaj.org/article/0ac6ae6a02d34bb7acf009a7d5c3ddb2
Autor:
Ryan Roussel, Juan Pablo Gonzalez-Aguilera, Eric Wisniewski, Alexander Ody, Wanming Liu, John Power, Young-Kee Kim, Auralee Edelen
Publikováno v:
Physical Review Accelerators and Beams, Vol 27, Iss 9, p 094601 (2024)
Next-generation accelerator concepts, which hinge on the precise shaping of beam distributions, demand equally precise diagnostic methods capable of reconstructing beam distributions within six-dimensional position-momentum spaces. However, the chara
Externí odkaz:
https://doaj.org/article/92c2fdf3c0c94bf9b65333e26a204657
Autor:
Ryan Roussel, Auralee L. Edelen, Tobias Boltz, Dylan Kennedy, Zhe Zhang, Fuhao Ji, Xiaobiao Huang, Daniel Ratner, Andrea Santamaria Garcia, Chenran Xu, Jan Kaiser, Angel Ferran Pousa, Annika Eichler, Jannis O. Lübsen, Natalie M. Isenberg, Yuan Gao, Nikita Kuklev, Jose Martinez, Brahim Mustapha, Verena Kain, Christopher Mayes, Weijian Lin, Simone Maria Liuzzo, Jason St. John, Matthew J. V. Streeter, Remi Lehe, Willie Neiswanger
Publikováno v:
Physical Review Accelerators and Beams, Vol 27, Iss 8, p 084801 (2024)
Accelerator physics relies on numerical algorithms to solve optimization problems in online accelerator control and tasks such as experimental design and model calibration in simulations. The effectiveness of optimization algorithms in discovering id
Externí odkaz:
https://doaj.org/article/3ef690ecc6354177bbeb91ccfbbc1972
Autor:
Seongyeol Kim, Juan Pablo Gonzalez-Aguilera, Philippe Piot, Gongxiaohui Chen, Scott Doran, Young-Kee Kim, Wanming Liu, Charles Whiteford, Eric Wisniewski, Auralee Edelen, Ryan Roussel, John Power
Publikováno v:
Physical Review Accelerators and Beams, Vol 27, Iss 7, p 074601 (2024)
Beams with cross-plane coupling or extreme asymmetries between the two transverse phase spaces are often encountered in particle accelerators. Flat beams with large transverse-emittance ratios are critical for future linear colliders. Similarly, magn
Externí odkaz:
https://doaj.org/article/42ac8d91d9624955a8cd64c58b1ec386
Publikováno v:
Instruments, Vol 7, Iss 3, p 29 (2023)
Transverse beam emittance plays a key role in the performance of high-brightness accelerators. Characterizing beam emittance is often carried out using a quadrupole scan, which fits beam matrix elements to experimental measurements using first-order
Externí odkaz:
https://doaj.org/article/760f52dc65794665952a03acc1d28f1f
Autor:
Ryan Roussel, Juan Pablo Gonzalez-Aguilera, Young-Kee Kim, Eric Wisniewski, Wanming Liu, Philippe Piot, John Power, Adi Hanuka, Auralee Edelen
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Characterizing an unknown, complex system, like an accelerator, in multi-dimensional space is a challenging task. Here the authors report a Bayesian active learning method - Constrained Proximal Bayesian Exploration - for the characterization of a co
Externí odkaz:
https://doaj.org/article/07110b4ee93f4bd4919f427ea5497766
Publikováno v:
Physical Review Accelerators and Beams, Vol 24, Iss 6, p 062801 (2021)
Particle accelerators require constant tuning during operation to meet beam quality, total charge and particle energy requirements for use in a wide variety of physics, chemistry and biology experiments. Maximizing the performance of an accelerator f
Externí odkaz:
https://doaj.org/article/6180f6dea9f744838a26a5d5ebadaf17
Autor:
Ryan Roussel, Gerard Andonian, Claire Hansel, Gerard Lawler, Walter Lynn, Nathan Majernik, River Robles, Kunal Sanwalka, Eric Wisniewski, James Rosenzweig
Publikováno v:
Instruments, Vol 3, Iss 3, p 48 (2019)
An externally heated, hollow cathode arc source was recommissioned at UCLA for use in experiments to drive plasma wakefields with shaped beams at the Argonne Wakefield Accelerator. The hollow cathode arc source provides a robust plasma column with a
Externí odkaz:
https://doaj.org/article/2eddcb50b0ce48a8becb4380bc80bf1d
Autor:
Juan Pablo Gonzalez-Aguilera, Wanming Liu, Ryan Roussel, John Power, Adi Hanuka, Yongsun Kim, Philippe Piot, Auralee Edelen, Eric Wisniewski
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)
Particle accelerators are invaluable discovery engines in the chemical, biological and physical sciences. Characterization of the accelerated beam response to accelerator input parameters is often the first step when conducting accelerator-based expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::537caea16f56548d7e145e6c1fefc62d
http://europepmc.org/articles/PMC8460822
http://europepmc.org/articles/PMC8460822
Publikováno v:
Physical Review Accelerators and Beams, Vol 24, Iss 6, p 062801 (2021)
Particle accelerators require constant tuning during operation to meet beam quality, total charge and particle energy requirements for use in a wide variety of physics, chemistry and biology experiments. Maximizing the performance of an accelerator f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a7ade11dc41a3d7bbcc4f57fb6d0604
https://doi.org/10.1103/physrevaccelbeams.24.062801
https://doi.org/10.1103/physrevaccelbeams.24.062801