Dr James Chappell: Publications

Experimental study of wakefields driven by a self-modulating proton bunch in plasma

Physical Review Accelerators and Beams American Physical Society 23:8 (2020) 81302

Authors:

M Turner, P Muggli, E Adli, R Agnello, M Aladi, Y Andrebe, O Apsimon, R Apsimon, A-M Bachmann, Ma Baistrukov, F Batsch, M Bergamaschi, P Blanchard, Pn Burrows, B Buttenschoen, A Caldwell, J Chappell, E Chevallay, M Chung, Da Cooke, H Damerau, C Davut, G Demeter, Lh Deubner, A Dexter, Gp Djotyan, S Doebert, J Farmer, A Fasoli, Vn Fedosseev, R Fiorito, Ra Fonseca, F Friebel, I Furno, L Garolfi, S Gessner, B Goddard, I Gorgisyan, Aa Gorn, E Granados, M Granetzny, O Grulke, E Gschwendtner, V Hafych, A Hartin, A Helm, Jr Henderson, A Howling, M Huether, R Jacquier

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).

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Evolution of a plasma column measured through modulation of a high-energy proton beam

ArXiv 2006.09991 (2020)

Authors:

S Gessner, the AWAKE Collaboration

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

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 378:2164 (2020) 20190539

Authors:

E Gschwendtner, M Turner, E Adli, A Ahuja, O Apsimon, R Apsimon, A-M Bachmann, F Batsch, C Bracco, F Braunmüller, S Burger, G Burt, B Buttenschön, A Caldwell, J Chappell, E Chevallay, M Chung, D Cooke, H Damerau, LH Deubner, A Dexter, S Doebert, J Farmer, VN Fedosseev, R Fiorito, RA Fonseca, F Friebel, L Garolfi, S Gessner, B Goddard, I Gorgisyan, AA Gorn, E Granados, O Grulke, A Hartin, A Helm, JR Henderson, M Hüther, M Ibison, S Jolly, F Keeble, MD Kelisani, S-Y Kim, F Kraus, M Krupa, T Lefevre, Y Li, S Liu, N Lopes, KV Lotov, M Martyanov, S Mazzoni, VA Minakov, JC Molendijk, JT Moody, M Moreira, P Muggli, H Panuganti, A Pardons, F Peña Asmus, A Perera, A Petrenko, A Pukhov, S Rey, P Sherwood, LO Silva, AP Sosedkin, PV Tuev, F Velotti, L Verra, VA Verzilov, J Vieira, CP Welsch, M Wendt, B Williamson, M Wing, B Woolley, G Xia, AWAKE Collaboration

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A magnetic spectrometer to measure electron bunches accelerated at AWAKE

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment Elsevier 940 (2019) 103-108

Authors:

J Bauche, B Biskup, M Cascella, J Chappell, N Chritin, D Cooke, L Deacon, Q Deliege, I Gorgisyan, J Hansen, S Jolly, F Keeble, P La Penna, S Mazzoni, D Medina Godoy, A Petrenko, M Quattri, T Schneider, P Sherwood, A Vorozhtsov, M Wing

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Proton-driven plasma wakefield acceleration in AWAKE.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 377:2151 (2019) 20180418

Authors:

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'.

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Dr James Chappell

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Experimental study of wakefields driven by a self-modulating proton bunch in plasma

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Abstract:

Evolution of a plasma column measured through modulation of a high-energy proton beam

Authors:

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

Authors:

A magnetic spectrometer to measure electron bunches accelerated at AWAKE

Authors:

Proton-driven plasma wakefield acceleration in AWAKE.

Authors:

Abstract:

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