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Your search keyword '"Shalimova, I. A."' showing total 23 results
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23 results on '"Shalimova, I. A."'

1. LCODE: Quasistatic code for simulating long-term evolution of three-dimensional plasma wakefields

Author

Kargapolov, I. Yu., Okhotnikov, N. V., Shalimova, I. A., Sosedkin, A. P., and Lotov, K. V.

Subjects
Physics - Accelerator Physics, Physics - Plasma Physics
Abstract

A recently developed three-dimensional version of the quasistatic code LCODE has a novel feature that enables high-accuracy simulations of the long-term evolution of waves in plasma wakefield accelerators. Equations of plasma particle motion are modified to suppress clustering and numerical heating of macroparticles, which otherwise occur because the Debye length is not resolved by the numerical grid. The previously observed effects of premature wake chaotization and wavebreaking disappear with the modified equations., Comment: 21 figure

Published
2024

2. Experimental observation of proton bunch modulation in a plasma, at varying plasma densities

Author

Adli, E., Ahuja, A., Apsimon, O., Apsimon, R., Bachmann, A. -M., Barrientos, D., Barros, M. M., Batkiewicz, J., Batsch, F., Bauche, J., Olsen, V. K. Berglyd, Bernardini, M., Biskup, B., Boccardi, A., Bogey, T., Bohl, T., Bracco, C., Braunmüller, F., Burger, S., Burt, G., Bustamante, S., Buttenschön, B., Caldwell, A., Cascella, M., Chappell, J., Chevallay, E., Chung, M., Cooke, D., Damerau, H., Deacon, L., Deubner, L. H., Dexter, A., Doebert, S., Farmer, J., Fedosseev, V. N., Fior, G., Fiorito, R., Fonseca, R. A., Friebel, F., Garolfi, L., Gessner, S., Gorgisyan, I., Gorn, A. A., Granados, E., Grulke, O., Gschwendtner, E., Guerrero, A., Hansen, J., Helm, A., Henderson, J. R., Hessler, C., Hoe, W., Hüther, M., Ibison, M., Jensen, L., Jolly, S., Keeble, F., Kim, S. -Y., Kraus, F., Lefevre, T., LeGodec, G., Li, Y., Liu, S., Lopes, N., Lotov, K. V., Brun, L. Maricalva, Martyanov, M., Mazzoni, S., Godoy, D. Medina, Minakov, V. A., Mitchell, J., Molendijk, J. C., Mompo, R., Moody, J. T., Moreira, M., Muggli, P., Mutin, C., Öz, E., Ozturk, E., Pasquino, C., Pardons, A., Asmus, F. Pena, Pepitone, K., Perera, A., Petrenko, A., Pitman, S., Plyushchev, G., Pukhov, A., Rey, S., Rieger, K., Ruhl, H., Schmidt, J. S., Shalimova, I. A., Shaposhnikova, E., Sherwood, P., Silva, L. O., Soby, L., Sosedkin, A. P., Speroni, R., Spitsyn, R. I., Tuev, P. V., Turner, M., Velotti, F., Verra, L., Verzilov, V. A., Vieira, J., Vincke, H., Welsch, C. P., Williamson, B., Wing, M., Woolley, B., and Xia, G.

Subjects
Physics - Accelerator Physics, Physics - Plasma Physics
Abstract

We give direct experimental evidence for the observation of the full transverse self-modulation of a relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a density modulation resulting from radial wakefield effects with a period reciprocal to the plasma frequency. We show that the modulation is seeded by using an intense laser pulse co-propagating with the proton bunch which creates a relativistic ionization front within the bunch. We show by varying the plasma density over one order of magnitude that the modulation period scales with the expected dependence on the plasma density., Comment: 4 figures, AWAKE collaboration paper, Submitted to PRL

Published
2018
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3. Acceleration of electrons in the plasma wakefield of a proton bunch

Author

The AWAKE Collaboration, Adli, E., Ahuja, A., Apsimon, O., Apsimon, R., Bachmann, A. -M., Barrientos, D., Batsch, F., Bauche, J., Olsen, V. K. Berglyd, Bernardini, M., Bohl, T., Bracco, C., Braunmueller, F., Burt, G., Buttenschoen, B., Caldwell, A., Cascella, M., Chappell, J., Chevallay, E., Chung, M., Cooke, D., Damerau, H., Deacon, L., Deubner, L. H., Dexter, A., Doebert, S., Farmer, J., Fedosseev, V. N., Fiorito, R., Fonseca, R. A., Friebel, F., Garolfi, L., Gessner, S., Gorgisyan, I., Gorn, A. A., Granados, E., Grulke, O., Gschwendtner, E., Hansen, J., Helm, A., Henderson, J. R., Huether, M., Ibison, M., Jensen, L., Jolly, S., Keeble, F., Kim, S. -Y., Kraus, F., Li, Y., Liu, S., Lopes, N., Lotov, K. V., Brun, L. Maricalva, Martyanov, M., Mazzoni, S., Godoy, D. Medina, Minakov, V. A., Mitchell, J., Molendijk, J. C., Moody, J. T., Moreira, M., Muggli, P., Oez, E., Pasquino, C., Pardons, A., Asmus, F. Pena, Pepitone, K., Perera, A., Petrenko, A., Pitman, S., Pukhov, A., Rey, S., Rieger, K., Ruhl, H., Schmidt, J. S., Shalimova, I. A., Sherwood, P., Silva, L. O., Soby, L., Sosedkin, A. P., Speroni, R., Spitsyn, R. I., Tuev, P. V., Turner, M., Velotti, F., Verra, L., Verzilov, V. A., Vieira, J., Welsch, C. P., Williamson, B., Wing, M., Woolley, B., and Xia, G.

Subjects
Physics - Accelerator Physics, High Energy Physics - Experiment, Physics - Plasma Physics
Abstract

High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase the energy or reduce the size of the accelerator, new acceleration schemes need to be developed. Plasma wakefield acceleration, in which the electrons in a plasma are excited, leading to strong electric fields, is one such promising novel acceleration technique. Pioneering experiments have shown that an intense laser pulse or electron bunch traversing a plasma, drives electric fields of 10s GV/m and above. These values are well beyond those achieved in conventional RF accelerators which are limited to ~0.1 GV/m. A limitation of laser pulses and electron bunches is their low stored energy, which motivates the use of multiple stages to reach very high energies. The use of proton bunches is compelling, as they have the potential to drive wakefields and accelerate electrons to high energy in a single accelerating stage. The long proton bunches currently available can be used, as they undergo self-modulation, a particle-plasma interaction which longitudinally splits the bunch into a series of high density microbunches, which then act resonantly to create large wakefields. The AWAKE experiment at CERN uses intense bunches of protons, each of energy 400 GeV, with a total bunch energy of 19 kJ, to drive a wakefield in a 10 m long plasma. Bunches of electrons are injected into the wakefield formed by the proton microbunches. This paper presents measurements of electrons accelerated up to 2 GeV at AWAKE. This constitutes the first demonstration of proton-driven plasma wakefield acceleration. The potential for this scheme to produce very high energy electron bunches in a single accelerating stage means that the results shown here are a significant step towards the development of future high energy particle accelerators., Comment: 7 pages, 4 figures. Updated acknowledgements and one reference

Published
2018
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4. AWAKE readiness for the study of the seeded self-modulation of a 400\,GeV proton bunch

Author

Muggli, P., Adli, E., Apsimon, R., Asmus, F., Baartman, R., Bachmann, A. -M., Marin, M. Barros, Batsch, F., Bauche, J., Olsen, V. K. Berglyd, Bernardini, M., Biskup, B., Boccardi, A., Bogey, T., Bohl, T., Bracco, C., Braunmuller, F., Burger, S., Burt, G., Bustamante, S., Buttenschon, B., Butterworth, A., Caldwell, A., Cascella, M., Chevallay, E., Chung, M., Damerau, H., Deacon, L., Dexter, A., Dirksen, P., Doebert, S., Farmer, J., Fedosseev, V., Feniet, T., Fior, G., Fiorito, R., Fonseca, R., Friebel, F., Gander, P., Gessner, S., Gorgisyan, I., Gorn, A. A., Grulke, O., Gschwendtner, E., Guerrero, A., Hansen, J., Hessler, C., Hofle, W., Holloway, J., Huther, M., Ibison, M., Islam, M. R., Jensen, L., Jolly, S., Kasim, M., Keeble, F., Kim, S. -Y., Krause, F., Lasheen, A., Lefevre, T., LeGodec, G., Li, Y., Liu, S., Lopes, N., Lotov, K. V., Martyanov, M., Mazzoni, S., Godoy, D. Medina, Mete, O., Minakov, V. A., Mompo, R., Moody, J., Moreira, M. T., Mitchell, J., Mutin, C., Norreys, P., Oz, E., Ozturk, E., Pauw, W., Pardone, A., Pasquino, C., Pepitone, K., Petrenko, A., Pitmann, S., Plyushchev, G., Pukhov, A., Rieger, K., Ruhl, H., Schmidt, J., Shalimova, I. A., Shaposhnikova, E., Sherwood, P., Silva, L., Sosedkin, A. P., Spitsyn, R. I., Szczurek, K., Thomas, J., Tuev, P. V., Turner, M., Verzilov, V., Vieira, J., Vincke, H., Welsch, C. P., Williamson, B., Wing, M., Xia, G., and Zhang, H.

Subjects
Physics - Plasma Physics, Physics - Accelerator Physics
Abstract

AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here is ready for systematic study of the seeded self-modulation of the 400\,GeV proton bunch in the 10\,m-long rubidium plasma with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$. % We show that the short laser pulse used for ionization of the rubidium vapor propagates all the way along the column, suggesting full ionization of the vapor. % We show that ionization occurs along the proton bunch, at the laser time and that the plasma that follows affects the proton bunch. %, Comment: Presented as an invited talk at the EPS=Plasma Physics Conference 2017

Published
2017
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5. Acceleration of electrons in the plasma wakefield of a proton bunch

Author

Adli, E., Ahuja, A., Apsimon, O., Apsimon, R., Bachmann, A.-M., Barrientos, D., Batsch, F., Bauche, J., Berglyd Olsen, V. K., Bernardini, M., Bohl, T., Bracco, C., Braunmüller, F., Burt, G., Buttenschön, B., Caldwell, A., Cascella, M., Chappell, J., Chevallay, E., Chung, M., Cooke, D., Damerau, H., Deacon, L., Deubner, L. H., Dexter, A., Doebert, S., Farmer, J., Fedosseev, V. N., Fiorito, R., Fonseca, R. A., Friebel, F., Garolfi, L., Gessner, S., Gorgisyan, I., Gorn, A. A., Granados, E., Grulke, O., Gschwendtner, E., Hansen, J., Helm, A., Henderson, J. R., Hüther, M., Ibison, M., Jensen, L., Jolly, S., Keeble, F., Kim, S.-Y., Kraus, F., Li, Y., Liu, S., Lopes, N., Lotov, K. V., Maricalva Brun, L., Martyanov, M., Mazzoni, S., Medina Godoy, D., Minakov, V. A., Mitchell, J., Molendijk, J. C., Moody, J. T., Moreira, M., Muggli, P., Öz, E., Pasquino, C., Pardons, A., Peña Asmus, F., Pepitone, K., Perera, A., Petrenko, A., Pitman, S., Pukhov, A., Rey, S., Rieger, K., Ruhl, H., Schmidt, J. S., Shalimova, I. A., Sherwood, P., Silva, L. O., Soby, L., Sosedkin, A. P., Speroni, R., Spitsyn, R. I., Tuev, P. V., Turner, M., Velotti, F., Verra, L., Verzilov, V. A., Vieira, J., Welsch, C. P., Williamson, B., Wing, M., Woolley, B., and Xia, G.

Published
2018
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11. Letter

Author

The AWAKE Collaboration, Adli, E., Ahuja, A., Apsimon, O., Apsimon, R., Bachmann, A. -M., Barrientos, D., Batsch, F., Bauche, J., Olsen, V. K. Berglyd, Bernardini, M., Bohl, T., Bracco, C., Braunmueller, F., Burt, G., Buttenschoen, B., Caldwell, A., Cascella, M., Chappell, J., Chevallay, E., Chung, M., Cooke, D., Damerau, H., Deacon, L., Deubner, L. H., Dexter, A., Doebert, S., Farmer, J., Fedosseev, V. N., Fiorito, R., Fonseca, R. A., Friebel, F., Garolfi, L., Gessner, S., Gorgisyan, I., Gorn, A. A., Granados, E., Grulke, O., Gschwendtner, E., Hansen, J., Helm, A., Henderson, J. R., Huether, M., Ibison, M., Jensen, L., Jolly, S., Keeble, F., Kim, S. -Y., Kraus, F., Li, Y., Liu, S., Lopes, N., Lotov, K. V., Brun, L. Maricalva, Martyanov, M., Mazzoni, S., Godoy, D. Medina, Minakov, V. A., Mitchell, J., Molendijk, J. C., Moody, J. T., Moreira, M., Muggli, P., Oez, E., Pasquino, C., Pardons, A., Asmus, F. Pena, Pepitone, K., Perera, A., Petrenko, A., Pitman, S., Pukhov, A., Rey, S., Rieger, K., Ruhl, H., Schmidt, J. S., Shalimova, I. A., Sherwood, P., Silva, L. O., Soby, L., Sosedkin, A. P., Speroni, R., Spitsyn, R. I., Tuev, P. V., Turner, M., Velotti, F., Verra, L., Verzilov, V. A., Vieira, J., Welsch, C. P., Williamson, B., Wing, M., Woolley, B., and Xia, G.

Subjects
Accelerator Physics (physics.acc-ph), Letter, High energy particle, Proton, General Science & Technology, FOS: Physical sciences, Electron, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, 010305 fluids & plasmas, Nuclear physics, High Energy Physics - Experiment (hep-ex), Acceleration, Affordable and Clean Energy, Physics::Plasma Physics, 0103 physical sciences, 010306 general physics, physics.acc-ph, Physics, Multidisciplinary, Large Hadron Collider, Plasma, Plasma acceleration, Accelerators and Storage Rings, Physics - Plasma Physics, Ciências Naturais::Outras Ciências Naturais [Domínio/Área Científica], Plasma Physics (physics.plasm-ph), Bunches, Physics::Accelerator Physics, Physics - Accelerator Physics, Experimental particle physics, Plasma-based accelerators
Abstract

High-energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. To increase the energy of the particles or to reduce the size of the accelerator, new acceleration schemes need to be developed. Plasma wakefield acceleration1–5, in which the electrons in a plasma are excited, leading to strong electric fields (so called ‘wakefields’), is one such promising acceleration technique. Experiments have shown that an intense laser pulse6–9 or electron bunch10,11 traversing a plasma can drive electric fields of tens of gigavolts per metre and above—well beyond those achieved in conventional radio-frequency accelerators (about 0.1 gigavolt per metre). However, the low stored energy of laser pulses and electron bunches means that multiple acceleration stages are needed to reach very high particle energies5,12. The use of proton bunches is compelling because they have the potential to drive wakefields and to accelerate electrons to high energy in a single acceleration stage13. Long, thin proton bunches can be used because they undergo a process called self-modulation14–16, a particle–plasma interaction that splits the bunch longitudinally into a series of high-density microbunches, which then act resonantly to create large wakefields. The Advanced Wakefield (AWAKE) experiment at CERN17–19 uses high-intensity proton bunches—in which each proton has an energy of 400 gigaelectronvolts, resulting in a total bunch energy of 19 kilojoules—to drive a wakefield in a ten-metre-long plasma. Electron bunches are then injected into this wakefield. Here we present measurements of electrons accelerated up to two gigaelectronvolts at the AWAKE experiment, in a demonstration of proton-driven plasma wakefield acceleration. Measurements were conducted under various plasma conditions and the acceleration was found to be consistent and reliable. The potential for this scheme to produce very high-energy electron bunches in a single accelerating stage20 means that our results are an important step towards the development of future high-energy particle accelerators21,22., Electron acceleration to very high energies is achieved in a single step by injecting electrons into a ‘wake’ of charge created in a 10-metre-long plasma by speeding long proton bunches.

Published
2018

22. Experimental Observation of Plasma Wakefield Growth Driven by the Seeded Self-Modulation of a Proton Bunch.

Author

Turner M, Adli E, Ahuja A, Apsimon O, Apsimon R, Bachmann AM, Barros Marin M, Barrientos D, Batsch F, Batkiewicz J, Bauche J, Berglyd Olsen VK, Bernardini M, Biskup B, Boccardi A, Bogey T, Bohl T, Bracco C, Braunmüller F, Burger S, Burt G, Bustamante S, Buttenschön B, Caldwell A, Cascella M, Chappell J, Chevallay E, Chung M, Cooke D, Damerau H, Deacon L, Deubner LH, Dexter A, Doebert S, Farmer J, Fedosseev VN, Fior G, Fiorito R, Fonseca RA, Friebel F, Garolfi L, Gessner S, Gorgisyan I, Gorn AA, Granados E, Grulke O, Gschwendtner E, Guerrero A, Hansen J, Helm A, Henderson JR, Hessler C, Hofle W, Hüther M, Ibison M, Jensen L, Jolly S, Keeble F, Kim SY, Kraus F, Lefevre T, LeGodec G, Li Y, Liu S, Lopes N, Lotov KV, Maricalva Brun L, Martyanov M, Mazzoni S, Medina Godoy D, Minakov VA, Mitchell J, Molendijk JC, Mompo R, Moody JT, Moreira M, Muggli P, Öz E, Ozturk E, Mutin C, Pasquino C, Pardons A, Peña Asmus F, Pepitone K, Perera A, Petrenko A, Pitman S, Plyushchev G, Pukhov A, Rey S, Rieger K, Ruhl H, Schmidt JS, Shalimova IA, Shaposhnikova E, Sherwood P, Silva LO, Soby L, Sosedkin AP, Speroni R, Spitsyn RI, Tuev PV, Velotti F, Verra L, Verzilov VA, Vieira J, Vincke H, Welsch CP, Williamson B, Wing M, Woolley B, and Xia G

Abstract

We measure the effects of transverse wakefields driven by a relativistic proton bunch in plasma with densities of 2.1×10^{14} and 7.7×10^{14}  electrons/cm^{3}. We show that these wakefields periodically defocus the proton bunch itself, consistently with the development of the seeded self-modulation process. We show that the defocusing increases both along the bunch and along the plasma by using time resolved and time-integrated measurements of the proton bunch transverse distribution. We evaluate the transverse wakefield amplitudes and show that they exceed their seed value (<15  MV/m) and reach over 300  MV/m. All these results confirm the development of the seeded self-modulation process, a necessary condition for external injection of low energy and acceleration of electrons to multi-GeV energy levels.

Published
2019
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23. Experimental Observation of Proton Bunch Modulation in a Plasma at Varying Plasma Densities.

Author

Adli E, Ahuja A, Apsimon O, Apsimon R, Bachmann AM, Barrientos D, Barros MM, Batkiewicz J, Batsch F, Bauche J, Berglyd Olsen VK, Bernardini M, Biskup B, Boccardi A, Bogey T, Bohl T, Bracco C, Braunmüller F, Burger S, Burt G, Bustamante S, Buttenschön B, Caldwell A, Cascella M, Chappell J, Chevallay E, Chung M, Cooke D, Damerau H, Deacon L, Deubner LH, Dexter A, Doebert S, Farmer J, Fedosseev VN, Fior G, Fiorito R, Fonseca RA, Friebel F, Garolfi L, Gessner S, Gorgisyan I, Gorn AA, Granados E, Grulke O, Gschwendtner E, Guerrero A, Hansen J, Helm A, Henderson JR, Hessler C, Hofle W, Hüther M, Ibison M, Jensen L, Jolly S, Keeble F, Kim SY, Kraus F, Lefevre T, LeGodec G, Li Y, Liu S, Lopes N, Lotov KV, Maricalva Brun L, Martyanov M, Mazzoni S, Medina Godoy D, Minakov VA, Mitchell J, Molendijk JC, Mompo R, Moody JT, Moreira M, Muggli P, Mutin C, Öz E, Ozturk E, Pasquino C, Pardons A, Peña Asmus F, Pepitone K, Perera A, Petrenko A, Pitman S, Plyushchev G, Pukhov A, Rey S, Rieger K, Ruhl H, Schmidt JS, Shalimova IA, Shaposhnikova E, Sherwood P, Silva LO, Soby L, Sosedkin AP, Speroni R, Spitsyn RI, Tuev PV, Turner M, Velotti F, Verra L, Verzilov VA, Vieira J, Vincke H, Welsch CP, Williamson B, Wing M, Woolley B, and Xia G

Abstract

We give direct experimental evidence for the observation of the full transverse self-modulation of a long, relativistic proton bunch propagating through a dense plasma. The bunch exits the plasma with a periodic density modulation resulting from radial wakefield effects. We show that the modulation is seeded by a relativistic ionization front created using an intense laser pulse copropagating with the proton bunch. The modulation extends over the length of the proton bunch following the seed point. By varying the plasma density over one order of magnitude, we show that the modulation frequency scales with the expected dependence on the plasma density, i.e., it is equal to the plasma frequency, as expected from theory.

Published
2019
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