Publications by James Holloway


Brilliant X-rays using a Two-Stage Plasma Insertion Device.

Scientific reports 7 (2017) 3985-

JA Holloway, PA Norreys, AGR Thomas, R Bartolini, R Bingham, J Nydell, RMGM Trines, R Walker, M Wing

Particle accelerators have made an enormous impact in all fields of natural sciences, from elementary particle physics, to the imaging of proteins and the development of new pharmaceuticals. Modern light sources have advanced many fields by providing extraordinarily bright, short X-ray pulses. Here we present a novel numerical study, demonstrating that existing third generation light sources can significantly enhance the brightness and photon energy of their X-ray pulses by undulating their beams within plasma wakefields. This study shows that a three order of magnitude increase in X-ray brightness and over an order of magnitude increase in X-ray photon energy is achieved by passing a 3 GeV electron beam through a two-stage plasma insertion device. The production mechanism micro-bunches the electron beam and ensures the pulses are radially polarised on creation. We also demonstrate that the micro-bunched electron beam is itself an effective wakefield driver that can potentially accelerate a witness electron beam up to 6 GeV.


Dense plasma heating by crossing relativistic electron beams.

Physical review. E 95 (2017) 013211-

N Ratan, NJ Sircombe, L Ceurvorst, J Sadler, MF Kasim, J Holloway, MC Levy, R Trines, R Bingham, PA Norreys

Here we investigate, using relativistic fluid theory and Vlasov-Maxwell simulations, the local heating of a dense plasma by two crossing electron beams. Heating occurs as an instability of the electron beams drives Langmuir waves, which couple nonlinearly into damped ion-acoustic waves. Simulations show a factor 2.8 increase in electron kinetic energy with a coupling efficiency of 18%. Our results support applications to the production of warm dense matter and as a driver for inertial fusion plasmas.


AWAKE: A Proton-Driven Plasma Wakefield Acceleration Experiment at CERN

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS 273 (2016) 175-180

C Bracco, LD Amorim, R Assmann, F Batsch, R Bingham, G Burt, B Buttenschoen, A Butterworth, A Caldwell, S Chattopadhyay, S Cipiccia, LC Deacon, S Doebert, U Dorda, E Feldbaumer, RA Fonseca, V Fedossev, B Goddard, J Grebenyuk, O Grulke, E Gschwendtner, J Hansen, C Hessler, W Hofle, J Holloway, D Jaroszynski, M Jenkins, L Jensen, S Jolly, R Jones, MF Kasim, N Lopes, K Lotov, SR Mandry, M Martyanov, M Meddahi, O Mete, V Minakov, J Moody, P Muggli, Z Najmudin, PA Norreys, E Oez, A Pardons, A Petrenko, A Pukhov, K Rieger, O Reimann, AA Seryi, E Shaposhnikova, P Sherwood, LO Silva, A Sosedkin, R Tarkeshian, RMGM Trines, FM Velotti, J Vieira, H Vincke, C Welsch, M Wing, G Xia


AWAKE, The Advanced Proton Driven Plasma Wakefield Acceleration Experiment at CERN

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 829 (2016) 76-82

E Gschwendtner, E Adli, L Amorim, R Apsimon, R Assmann, A-M Bachmann, F Batsch, J Bauche, VKB Olsen, M Bernardini, R Bingham, B Biskup, T Bohl, C Bracco, PN Burrows, G Burt, B Buttenschoen, A Butterworth, A Caldwell, M Cascella, E Chevallay, S Cipiccia, H Damerau, L Deacon, R Dirksen, S Doebert, U Dorda, J Farmer, V Fedosseev, E Feldbaumer, R Fiorito, R Fonseca, F Friebel, AA Gorn, O Grulke, J Hansen, C Hessler, W Hofle, J Holloway, M Huether, D Jaroszynski, L Jensen, S Jolly, A Joulaei, M Kasim, F Keeble, Y Li, S Liu, N Lopes, KV Lotov, S Mandry, R Martorelli, M Martyanov, S Mazzoni, O Mete, VA Minakov, J Mitchell, J Moody, P Muggli, Z Najmudin, R Norreys, E Oez, A Pardons, K Pepitone, A Petrenko, G Plyushchev, A Pukhov, K Rieger, H Ruhl, E Salveter, N Savard, J Schmidt, A Seryi, E Shaposhnikova, ZM Sheng, R Sherwood, L Silva, L Soby, AP Sosedkin, RI Spitsyn, R Trines, PV Tuev, M Turner, V Verzilov, J Vieira, H Vincke, Y Wei, CP Welsch, M Wing, G Xia, H Zhang


Path to AWAKE: Evolution of the concept

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 829 (2016) 3-16

A Caldwell, E Adli, L Amorim, R Apsimon, T Argyropoulos, R Assmann, A-M Bachmann, E Batsch, J Bauche, VKB Olsen, M Bernardini, R Bingham, B Biskup, T Bohl, C Bracco, PN Burrows, G Burt, B Buttenschoen, A Butterworth, M Cascella, S Chattopadhyay, E Chevallay, S Cipiccia, H Damerau, L Deacon, R Dirksen, S Doebert, U Dorda, E Eisen, J Farmer, S Fartoukh, V Fedosseev, E Feldbaumer, R Fiorito, R Fonseca, F Friebel, G Geschonke, B Goddard, AA Gorn, O Grulke, E Gschwendtner, J Hansen, C Hessler, S Hillenbrand, W Hofle, J Holloway, C Huang, M Huether, D Jaroszynski, L Jensen, S Jolly, A Joulaei, M Kasim, F Keeble, R Kersevan, N Kumar, Y Li, S Liu, N Lopes, KV Lotov, W Lu, J Machacek, S Mandry, I Martin, R Martorelli, M Martyanov, S Mazzoni, M Meddahi, L Merminga, O Mete, VA Minakov, J Mitchell, J Moody, A-S Mueller, Z Najmudin, TCQ Noakes, P Norreys, J Osterhoff, E Oez, A Pardons, K Pepitone, A Petrenko, G Plyushchev, J Pozimski, A Pukhov, O Reimann, K Rieger, S Roesler, H Ruhl, T Rusnak, E Salveter, N Savard, J Schmidt, H von der Schmitt, A Seryi, E Shaposhnikova, ZM Sheng, R Sherwood, L Silva, F Simon, L Soby, AP Sosedkin, RI Spitsyn, T Tajima, R Tarkeshian, H Timko, R Trines, T Tueckmantel, PV Tuev, M Turner, E Velotti, V Verzilov, J Vieira, H Vincke, Y Wei, CP Welsch, M Wing, G Xia, V Yakimenko, H Zhang, F Zimmermann


Simulation of density measurements in plasma wakefields using photon acceleration

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 18 (2015) ARTN 032801

MF Kasim, N Ratan, L Ceurvorst, J Sadler, PN Burrows, R Trines, J Holloway, M Wing, R Bingham, P Norreys


Quantitative single shot and spatially resolved plasma wakefield diagnostics

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 18 (2015) ARTN 081302

MF Kasim, J Holloway, L Ceurvorst, MC Levy, N Ratan, J Sadler, R Bingham, PN Burrows, R Trines, M Wing, P Norreys


Proton-driven plasma wakefield acceleration: a path to the future of high-energy particle physics

PLASMA PHYSICS AND CONTROLLED FUSION 56 (2014) ARTN 084013

R Assmann, R Bingham, T Bohl, C Bracco, B Buttenschoen, A Butterworth, A Caldwell, S Chattopadhyay, S Cipiccia, E Feldbaumer, RA Fonseca, B Goddard, M Gross, O Grulke, E Gschwendtner, J Holloway, C Huang, D Jaroszynski, S Jolly, P Kempkes, N Lopes, K Lotov, J Machacek, SR Mandry, JW McKenzie, M Meddahi, BL Militsyn, N Moschuering, P Muggli, Z Najmudin, TCQ Noakes, PA Norreys, E Oez, A Pardons, A Petrenko, A Pukhov, K Rieger, O Reimann, H Ruhl, E Shaposhnikova, LO Silva, A Sosedkin, R Tarkeshian, RMGN Trines, T Tueckmantel, J Vieira, H Vincke, M Wing, G Xia


Compact laser accelerators for X-ray phase-contrast imaging

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 (2014)

Z Najmudin, S Kneip, MS Bloom, SPD Mangles, O Chekhlov, AE Dangor, A Dopp, K Ertel, SJ Hawkes, J Holloway, CJ Hooker, J Jiang, NC Lopes, H Nakamura, PA Norreys, PP Rajeev, C Russo, MJV Streeter, DR Symes, M Wing

Advances in X-ray imaging techniques have been driven by advances in novel X-ray sources. The latest fourth-generation X-ray sources can boast large photon fluxes at unprecedented brightness. However, the large size of these facilities means that these sources are not available for everyday applications. With advances in laser plasma acceleration, electron beams can now be generated at energies comparable to those used in light sources, but in university-sized laboratories. By making use of the strong transverse focusing of plasma accelerators, bright sources of betatron radiation have been produced. Here, we demonstrate phase-contrast imaging of a biological sample for the first time by radiation generated by GeV electron beams produced by a laser accelerator. The work was performed using a greater than 300TW laser, which allowed the energy of the synchrotron source to be extended to the 10100 keV range. © 2014 The Author(s) Published by the Royal Society. All rights reserved.