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3 results on '"M. D. Kelisani"'

1. Proton Bunch Self-Modulation in Plasma with Density Gradient

Author

Eric Chevallay, V. A. Minakov, F. Keeble, Linbo Liang, Ans Pardons, F. Friebel, J. R. Henderson, M. A. Baistrukov, Stefano Mazzoni, M. Turner, Yu Li, F. Batsch, Ivo Furno, L. Verra, M. Granetzny, H. Saberi, Philip Burrows, V. Hafych, Carsten Welsch, J. T. Moody, M. Hüther, Guoxing Xia, Benjamin Woolley, M. Á. Kedves, P. Blanchard, P. V. Tuev, V. A. Verzilov, J. Chappell, M. Chung, Florian Kraus, R. I. Spitsyn, Ricardo Fonseca, T. Nechaeva, A. Perera, Olaf Grulke, M. Krupa, M. Aladi, R. Fiorito, S. Liu, Brennan Goddard, A. Helm, Nelson Lopes, I. Gorgisyan, Erik Adli, E. Senes, Ambrogio Fasoli, Patric Muggli, M. Zepp, S. Doebert, L. H. Deubner, Spencer Gessner, D. Medina Godoy, Rebecca Ramjiawan, M. Martyanov, S. Rey, Hartmut Ruhl, M. Moreira, Alan Howling, H. Panuganti, Amos Dexter, Simon Jolly, R. Jacquier, D. A. Cooke, Edda Gschwendtner, G. Zevi della Porta, G. P. Djotyan, T. Lefevre, M. Bergamaschi, J. Pucek, L. Garolfi, B. Williamson, Matthew Wing, H. Damerau, A. A. Gorn, V. N. Fedosseev, Eduardo Granados, I. Yu. Kargapolov, Francesco Velotti, Robert Apsimon, Sung Youb Kim, B. Buttenschön, O. Apsimon, Luis O. Silva, F. Braunmüller, B. Ráczkevi, Alexander Pukhov, Anthony Hartin, G. Demeter, M. D. Kelisani, John P. Farmer, Allen Caldwell, R. Agnello, Peter Sherwood, F. Peña Asmus, Jorge Vieira, A.-M. Bachmann, P. I. Morales Guzmán, Konstantin Lotov, J. Wolfenden, C. Davut, Oliver Schmitz, Alexey Petrenko, Y. Andrebe, and Collaboration, AWAKE

Subjects
Accelerator Physics (physics.acc-ph), Proton, Density gradient, Other Fields of Physics, FOS: Physical sciences, General Physics and Astronomy, Ciências Naturais::Ciências Físicas [Domínio/Área Científica], 01 natural sciences, Physics::Plasma Physics, physics.plasm-ph, 0103 physical sciences, 010306 general physics, physics.acc-ph, Physics, Linear system, Spectral density, Plasma, Accelerators and Storage Rings, Physics - Plasma Physics, Plasma Physics (physics.plasm-ph), Modulation, Physics::Accelerator Physics, Physics - Accelerator Physics, Atomic physics, Phase velocity, Frequency modulation
Abstract

We study experimentally the effect of linear plasma density gradients on the self-modulation of a 400\,GeV proton bunch. Results show that a positive/negative gradient in/decreases the number of micro-bunches and the relative charge per micro-bunch observed after 10\,m of plasma. The measured modulation frequency also in/decreases. With the largest positive gradient we observe two frequencies in the modulation power spectrum. Results are consistent with changes in wakefields' phase velocity due to plasma density gradient adding to the slow wakefields' phase velocity during self-modulation growth predicted by linear theory., Comment: 14 pages, 4 figures

Published
2020
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2. Experimental Study of Wakefields Driven by a Self-Modulating Proton Bunch in Plasma

Author

L. Garolfi, M. Aladi, B. Williamson, Simon Jolly, J. T. Moody, P. I. Morales Guzmán, H. Panuganti, Michele Bergamaschi, V. N. Fedosseev, M. A. Baistrukov, M. Krupa, A. A. Gorn, Eugenio Senes, Alan Howling, M. Hüther, Erik Adli, Robert Apsimon, G. Demeter, Oliver Schmitz, Luis O. Silva, Alexander Pukhov, John P. Farmer, A. Helm, S. Rey, Jorge Vieira, Sung Youb Kim, V. A. Verzilov, Ivo Furno, Benjamin Woolley, B. Buttenschön, Patric Muggli, Linbo Liang, S. Liu, Florian Kraus, R. Jacquier, Olaf Grulke, Ans Pardons, J. Pucek, Philip Burrows, I. Yu. Kargapolov, M. Moreira, F. Friebel, B. Ráczkevi, T. Lefevre, F. Batsch, Allen Caldwell, H. Damerau, R. Agnello, S. Doebert, Stefano Mazzoni, I. Gorgisyan, M. Martyanov, Guoxing Xia, L. Verra, L. H. Deubner, Peter Sherwood, F. Peña Asmus, D. Medina Godoy, M. Granetzny, Rebecca Ramjiawan, Anthony Hartin, A. Perera, Brennan Goddard, F. Keeble, M. D. Kelisani, James Henderson, Ambrogio Fasoli, A.-M. Bachmann, Spencer Gessner, V. Hafych, Eric Chevallay, N. Lopes, Ralph Fiorito, V. A. Minakov, H. Saberi, D. A. Cooke, M. Zepp, Konstantin Lotov, P. Blanchard, Yang Li, Moses Chung, J. Wolfenden, Matthew Wing, Eduardo Granados, M. Á. Kedves, O. Apsimon, Alexey Petrenko, Hartmut Ruhl, P. V. Tuev, J. Chappell, G. P. Djotyan, C. Davut, Amos Dexter, Edda Gschwendtner, Y. Andrebe, Francesco Velotti, M. Turner, G. Zevi della Porta, Carsten Welsch, and Ricardo Fonseca

Subjects
Accelerator Physics (physics.acc-ph), Nuclear and High Energy Physics, Physics and Astronomy (miscellaneous), Proton, Other Fields of Physics, FOS: Physical sciences, Context (language use), Electron, Ciências Naturais::Ciências Físicas [Domínio/Área Científica], 01 natural sciences, Nuclear physics, Physics::Plasma Physics, physics.plasm-ph, 0103 physical sciences, 010306 general physics, physics.acc-ph, awake, Physics, 010308 nuclear & particles physics, Final energy, Surfaces and Interfaces, Plasma, Radius, Accelerators and Storage Rings, Physics - Plasma Physics, Plasma Physics (physics.plasm-ph), Transverse plane, Amplitude, beam, Physics::Accelerator Physics, Physics - Accelerator Physics
Abstract

We study experimentally the longitudinal and transverse wakefields driven by a highly relativistic proton bunch during self-modulation in plasma. We show that the wakefields' growth and amplitude increase with increasing seed amplitude as well as with the proton bunch charge in the plasma. We study transverse wakefields using the maximum radius of the proton bunch distribution measured on a screen downstream from the plasma. We study longitudinal wakefields by externally injecting electrons and measuring their final energy. Measurements agree with trends predicted by theory and numerical simulations and validate our understanding of the development of self-modulation. Experiments were performed in the context of the Advanced Wakefield Experiment (AWAKE)., 4 figures

Published
2020
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3. Correction to 'Proton-driven plasma wakefield acceleration in AWAKE'

Author

Brennan Goddard, S. Doebert, Spencer Gessner, Anthony Hartin, John Molendijk, Patrick Muggli, M. Krupa, Erik Adli, Graeme Burt, S. Rey, F. Friebel, James Henderson, B. Williamson, Ans Pardons, Eric Chevallay, M. Hüther, V. A. Minakov, John P. Farmer, Konstantin Lotov, Moses Chung, F. Batsch, Olaf Grulke, A. P. Sosedkin, L. Garolfi, Carsten Welsch, Chiara Bracco, V. A. Verzilov, Florian Kraus, Stefano Mazzoni, P. V. Tuev, Allen Caldwell, M. Turner, J. Chappell, S. Liu, M. Moreira, R. Apsimon, Ricardo Fonseca, V. N. Fedosseev, M. D. Kelisani, A. A. Gorn, Alexander Pukhov, Matthew Wing, Eduardo Granados, F. Keeble, H. Damerau, Sung Youb Kim, B. Buttenschön, Peter Sherwood, S. Burger, O. Apsimon, F. Peña Asmus, L. Verra, Simon Jolly, A. Perera, Arun Ahuja, H. Panuganti, Guoxing Xia, M. Wendt, A.-M. Bachmann, B. Woolley, A. Helm, Jorge Vieira, F. Braunmüller, Yang Li, Thibaut Lefèvre, Alexey Petrenko, J. T. Moody, I. Gorgisyan, L. H. Deubner, Ralph Fiorito, Nelson Lopes, M. Ibison, Amos Dexter, Edda Gschwendtner, Francesco Velotti, L. O. Silva, M. Martyanov, and David R. Cooke

Subjects
Physics, Nuclear physics, Proton, Physics::Plasma Physics, General Mathematics, General Engineering, General Physics and Astronomy, Physics::Accelerator Physics, Articles, Plasma acceleration, Corrections
Abstract

In this article, we briefly summarize the experiments performed during the first run of the Advanced Wakefield Experiment, AWAKE, at CERN (European Organization for Nuclear Research). The final goal of AWAKE Run 1 (2013-2018) was to demonstrate that 10-20 MeV electrons can be accelerated to GeV energies in a plasma wakefield driven by a highly relativistic self-modulated proton bunch. We describe the experiment, outline the measurement concept and present first results. Last, we outline our plans for the future. This article is part of the Theo Murphy meeting issue 'Directions in particle beam-driven plasma wakefield acceleration'.

Published
2019

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