Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Finn O'Shea"'
Publikováno v:
Machine Learning: Science and Technology, Vol 5, Iss 3, p 035036 (2024)
Anomaly detection is an important task for complex scientific experiments and other complex systems (e.g. industrial facilities, manufacturing), where failures in a sub-system can lead to lost data, poor performance, or even damage to components. Whi
Externí odkaz:
https://doaj.org/article/4c063926275c4193bd69a730edc8662c
Publikováno v:
Physical Review Accelerators and Beams, Vol 23, Iss 12, p 122802 (2020)
In this article we report on the application of a model-free reinforcement learning method to the optimization of accelerator systems. We simplify a policy gradient algorithm to accelerator control from sophisticated algorithms that have recently bee
Autor:
Felice Andrea Pellegrino, Gianfranco Fenu, Marco Lonza, Finn O'Shea, Erica Salvato, Giulio Gaio, Niky Bruchon
Publikováno v:
Electronics, Vol 9, Iss 781, p 781 (2020)
Electronics
Volume 9
Issue 5
Electronics
Volume 9
Issue 5
Optimal tuning of particle accelerators is a challenging task. Many different approaches have been proposed in the past to solve two main problems&mdash
attainment of an optimal working point and performance recovery after machine drifts. The mo
attainment of an optimal working point and performance recovery after machine drifts. The mo
Autor:
Andreas Przystawik, Michele Di Fraia, Raimund Feifel, Tim Laarmann, Ulrich Bangert, Simone Spampinati, Enrico Allaria, Paolo Sigalotti, Paolo Cinquegrana, Roberto Borghes, Kevin C. Prince, Paolo Piseri, Giuseppe Penco, Finn O'Shea, Giuseppe Sansone, Marcel Binz, Richard J. Squibb, Miltcho B. Danailov, Primož Rebernik Ribič, Alexander Demidovich, Najmeh Mirian, Lukas Bruder, Giulio Cerullo, Oksana Plekan, Frank Stienkemeier, Andreas Wituschek, Ivaylo Nikolov, Marcel Drabbels, Luca Giannessi, Carlo Callegari, Carlo Spezzani, Rupert Michiels, Marcel Mudrich, Daniel Uhl, Stefano Stranges
Publikováno v:
Nature Communications 11(1), 883 (2020). doi:10.1038/s41467-020-14721-2
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Wituschek, A, Bruder, L, Allaria, E, Bangert, U, Binz, M, Borghes, R, Callegari, C, Cerullo, G, Cinquegrana, P, Giannessi, L, Danailov, M, Demidovich, A, Di Fraia, M, Drabbels, M, Feifel, R, Laarmann, T, Michiels, R, Mirian, N S, Mudrich, M, Nikolov, I, O’Shea, F H, Penco, G, Piseri, P, Plekan, O, Prince, K C, Przystawik, A, Ribič, P R, Sansone, G, Sigalotti, P, Spampinati, S, Spezzani, C, Squibb, R J, Stranges, S, Uhl, D & Stienkemeier, F 2020, ' Tracking attosecond electronic coherences using phase-manipulated extreme ultraviolet pulses ', Nature Communications, vol. 11, no. 1, 883 . https://doi.org/10.1038/s41467-020-14721-2
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Wituschek, A, Bruder, L, Allaria, E, Bangert, U, Binz, M, Borghes, R, Callegari, C, Cerullo, G, Cinquegrana, P, Giannessi, L, Danailov, M, Demidovich, A, Di Fraia, M, Drabbels, M, Feifel, R, Laarmann, T, Michiels, R, Mirian, N S, Mudrich, M, Nikolov, I, O’Shea, F H, Penco, G, Piseri, P, Plekan, O, Prince, K C, Przystawik, A, Ribič, P R, Sansone, G, Sigalotti, P, Spampinati, S, Spezzani, C, Squibb, R J, Stranges, S, Uhl, D & Stienkemeier, F 2020, ' Tracking attosecond electronic coherences using phase-manipulated extreme ultraviolet pulses ', Nature Communications, vol. 11, no. 1, 883 . https://doi.org/10.1038/s41467-020-14721-2
The recent development of ultrafast extreme ultraviolet (XUV) coherent light sources bears great potential for a better understanding of the structure and dynamics of matter. Promising routes are advanced coherent control and nonlinear spectroscopy s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::745c055f56055074aa67190ca469f171
http://hdl.handle.net/11311/1175971
http://hdl.handle.net/11311/1175971
Autor:
Alexander Zholents, Robert Keane, Josiah Hartzell, D. Gavryushkin, William Berg, Jeffrey Dooling, Alexei Smirnov, Lester Erwin, E. Spranza, M. Ruelas, Finn O'Shea, Ronald Agustsson, Stanley Pasky, Tara Campese, Y. Chen, Y. Sun
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 960:163655
We report observations of an intense, multi-band, sub-THz and THz radiation extracted from a ∼ 2-3 MeV electron beam with a flat transverse profile propagating in an oversized rectangular waveguide placed into a 3.25 mm gap of a planar undulator ha
Autor:
N. Sudar, C. Swinson, Zheng-Ming Sheng, M. Harrison, R.W. Assmann, Mikhail Fedurin, A. Ovodenko, Maria Weikum, G. Andonian, Finn O'Shea, Mikhail Polyanskiy
Publikováno v:
Nuclear instruments & methods in physics research / A 909, 369-373 (2018). doi:10.1016/j.nima.2018.02.038
3rd European Advanced Accelerator Concepts Workshop, EAAC2017, Elba, Italy, 2017-09-24-2017-09-30
3rd European Advanced Accelerator Concepts Workshop, EAAC2017, Elba, Italy, 2017-09-24-2017-09-30
3rd European Advanced Accelerator Concepts Workshop, EAAC2017, Elba, Italy, 24 Sep 2017 - 30 Sep 2017; Nuclear instruments & methods in physics research / A 909, 369 - 373 (2018). doi:10.1016/j.nima.2018.02.038
With electron beam durations down
With electron beam durations down
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a53995995304be0c909198af376c5690
https://strathprints.strath.ac.uk/63874/1/Weikum_etal_NIMPR_2018_Preliminary_measurements_for_a_sub_femtosecond_electron_bunch_length_diagnostic.pdf
https://strathprints.strath.ac.uk/63874/1/Weikum_etal_NIMPR_2018_Preliminary_measurements_for_a_sub_femtosecond_electron_bunch_length_diagnostic.pdf
Autor:
Thomas Grandsaert, Finn O'Shea, Ron Agustsson, Vyacheslav F. Solovyov, Oleg Chubar, Alex Murokh, Yung Chen
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 735:521-527
We discuss the feasibility of enhancement of the gap field in a short-period hybrid undulator by using pole inserts with the saturation inductance B s , over that of iron, 2 T. Dysprosium metal, with the saturation inductance of 3.4 T below 90 K, and
Autor:
Vincent Palermo, Sergey Kutsaev, Salime Boucher, Finn O'Shea, Richard C. Lanza, Anatoli Arodzero, Vitaliy Ziskin
Publikováno v:
2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD).
The security market requirements for state-of-the-art mobile and portal radiography inspection systems include high imaging resolution (better than 5 mm line pair), penetration beyond 300 mm steel equivalent, material discrimination (three groups of
Autor:
S. Barber, Mikhail Fedurin, Karl Kusche, Finn O'Shea, Gerard Andonian, James Rosenzweig, C. Swinson
Publikováno v:
Physical review letters. 118(5)
Temporal pulse tailoring of charged-particle beams is essential to optimize efficiency in collinear wakefield acceleration schemes. In this Letter, we demonstrate a novel phase space manipulation method that employs a beam wakefield interaction in a
Autor:
Jere C. Harrison, D. Cesar, Renkai Li, D. Alesini, Pietro Musumeci, Finn O'Shea, Jared Maxson, H. To, Y. Sun, Pedro Frigola
We present the results of an experiment where a short focal length (~ 1.3 cm) permanent magnet electron lens is used to image micron-size features of a metal sample in a single shot, using an ultra- high brightness ps-long 4 MeV electron beam from a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9157228d0be91690db2e305653fe027a
http://arxiv.org/abs/1604.00973
http://arxiv.org/abs/1604.00973