Dr James Chappell: Publications

Experimental study of extended timescale dynamics of a plasma wakefield driven by a self-modulated proton bunch

(2020)

Authors:

J Chappell, 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 Buttenschön, A Caldwell, 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 Turno, 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 Hüther, R Jacquier, S Jolly, I Yu Kargapolov, MÁ Kedves, F Keeble, MD Kelisani, S-Y Kim, F Kraus, M Krupa, T Lefevre, Y Li, L Liang, S Liu, N Lopes, KV Lotov, M Martyanov, S Mazzoni, D Medina Godoy, VA Minakov, JT Moody, PI Morales Guzmán, M Moreira, H Panuganti, A Pardons, F Peña Asmus, A Perera, A Petrenko, J Pucek, A Pukhov, B Ráczkevi, RL Ramjiawan, S Rey, H Ruhl, H Saberi, O Schmitz, E Senes, P Sherwood, LO Silva, RI Spitsyn, PV Tuev, F Velotti, L Verra, VA Verzilov, J Vieira, CP Welsch, B Williamson, M Wing, J Wolfenden, B Woolley, G Dia, M Zepp, G Zevi Della Porta

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).

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

ArXiv 2006.09991 (2020)

Authors:

S Gessner, the AWAKE Collaboration

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

Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences The Royal Society 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

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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