Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659403
W. Kimura, I. V. Poaorelsky, L. Schächter
In dielectric laser accelerators (DLAs), the electrons traverse through a channel whose structure period and transverse dimensions are comparable to the laser wavelength. If a 1-µm laser wavelength is used, this means the acceleration channel width must be less than or equal to 1 µm, which severely restricts the amount of charge that can be passed through the channel and places high demands on the electron beam emittance. Using a CO2 laser operating at 10 µm wavelength to drive the DLA enlarges the dimensions of the channel by 10 times. This increases the amount of charge that can be accelerated by orders of magnitude and eases the emittance requirements. As an additional improvement, we are proposing using an inverse free electron laser (IFEL), driven by a portion of the CO2 laser beam, to generate microbunches that are injected into the DLA. This allows maximizing the number of accelerated electrons and minimizing their energy spread, thereby improving the output beam quality. Other advantages of our approach include facilitating achieving phase synchronization of the microbunches within each DLA stage due to the longer laser wavelength and easing fabrication of the microstructures with acceptable tolerances because the structures are 10 times larger. To illustrate the scalability of this concept, we present a straw man design for a high-repetition-rate, high-peak-power CO2 laser system capable of driving multi-stage DLAs up to the energy and luminosity requirements for a future collider. Innovative features of this design include utilizing solid-state lasers (Fe: ZnSe) for pumping the CO2 amplifiers rather than conventional discharge pumping and recirculating laser power through the amplifiers to support high-efficiency, high-repetition-rate, multi-bunch acceleration.
{"title":"CO2-Laser-Driven Dielectric Laser Accelerator","authors":"W. Kimura, I. V. Poaorelsky, L. Schächter","doi":"10.1109/AAC.2018.8659403","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659403","url":null,"abstract":"In dielectric laser accelerators (DLAs), the electrons traverse through a channel whose structure period and transverse dimensions are comparable to the laser wavelength. If a 1-µm laser wavelength is used, this means the acceleration channel width must be less than or equal to 1 µm, which severely restricts the amount of charge that can be passed through the channel and places high demands on the electron beam emittance. Using a CO2 laser operating at 10 µm wavelength to drive the DLA enlarges the dimensions of the channel by 10 times. This increases the amount of charge that can be accelerated by orders of magnitude and eases the emittance requirements. As an additional improvement, we are proposing using an inverse free electron laser (IFEL), driven by a portion of the CO2 laser beam, to generate microbunches that are injected into the DLA. This allows maximizing the number of accelerated electrons and minimizing their energy spread, thereby improving the output beam quality. Other advantages of our approach include facilitating achieving phase synchronization of the microbunches within each DLA stage due to the longer laser wavelength and easing fabrication of the microstructures with acceptable tolerances because the structures are 10 times larger. To illustrate the scalability of this concept, we present a straw man design for a high-repetition-rate, high-peak-power CO2 laser system capable of driving multi-stage DLAs up to the energy and luminosity requirements for a future collider. Innovative features of this design include utilizing solid-state lasers (Fe: ZnSe) for pumping the CO2 amplifiers rather than conventional discharge pumping and recirculating laser power through the amplifiers to support high-efficiency, high-repetition-rate, multi-bunch acceleration.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130878572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659417
Han Chen, Yingchao Du, Lixin Yan, Jiaru Shi, Wenhui Huang, Chuanxiang Tang
Recently a MeV quasi-monochromatic compact gamma-ray source with high peak spectral density based on the inverse Compton scattering (ICS) has been proposed in the Department of Engineering Physics, Tsinghua University. This type compact gamma-ray source will be used for advanced X/gamma-ray imaging application based on the nuclear resonance Fluorescence (NRF) [1]. The machine size and the peak spectral density of scattered photons are the most important parameters for such applications. In order to make the source compact enough, a compact commercial narrow bandwidth Nd: Yag laser system with ~50 fs FWHM duration and ~1.5 J maximum energy per pulse is selected as the scattering laser, and the linac is proposed to combine a photo-injector and an X-band main linac to obtain high quality 250 MeV maximum energy electron beam with high charge (~ 200 pC) and low transverse and longitudinal emittance. In ICS, the properties of the generated photons are determined by the parameters of the incident laser and electron beam, and also their interaction geometry. In this paper, we will present the optimization of the linac design. We systematically simulate and optimize the linac design with Matlab, Astra [2] and Cain [3]. In the simulations and optimizations, we use differential evolution algorithm for simultaneous optimization of multiple parameters. Three possible types of photo-injector, S-band photocathode RF(radio frequency) gun with S-band booster, C-band photocathode RF gun with C-band booster, X-band photocathode RF gun with X-band booster, are systematically optimized and compared. We also analyzed wakefield effect on the electron beam quality.
{"title":"Optimization of the Compact Gamma-ray Source Based on Inverse Compton Scattering Design","authors":"Han Chen, Yingchao Du, Lixin Yan, Jiaru Shi, Wenhui Huang, Chuanxiang Tang","doi":"10.1109/AAC.2018.8659417","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659417","url":null,"abstract":"Recently a MeV quasi-monochromatic compact gamma-ray source with high peak spectral density based on the inverse Compton scattering (ICS) has been proposed in the Department of Engineering Physics, Tsinghua University. This type compact gamma-ray source will be used for advanced X/gamma-ray imaging application based on the nuclear resonance Fluorescence (NRF) [1]. The machine size and the peak spectral density of scattered photons are the most important parameters for such applications. In order to make the source compact enough, a compact commercial narrow bandwidth Nd: Yag laser system with ~50 fs FWHM duration and ~1.5 J maximum energy per pulse is selected as the scattering laser, and the linac is proposed to combine a photo-injector and an X-band main linac to obtain high quality 250 MeV maximum energy electron beam with high charge (~ 200 pC) and low transverse and longitudinal emittance. In ICS, the properties of the generated photons are determined by the parameters of the incident laser and electron beam, and also their interaction geometry. In this paper, we will present the optimization of the linac design. We systematically simulate and optimize the linac design with Matlab, Astra [2] and Cain [3]. In the simulations and optimizations, we use differential evolution algorithm for simultaneous optimization of multiple parameters. Three possible types of photo-injector, S-band photocathode RF(radio frequency) gun with S-band booster, C-band photocathode RF gun with C-band booster, X-band photocathode RF gun with X-band booster, are systematically optimized and compared. We also analyzed wakefield effect on the electron beam quality.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133552006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659427
B. Djordjević, C. Benedetti, C. Schroeder, E. Esarey, W. Leemans
The superposition of higher-order laser modes can be used to control the laser-driven transverse wakefields in a laser-plasma accelerator operating in the quasi-linear regime. To avoid slippage and beating, modes must have equal group velocities. This can be accomplished by geometric tuning, selecting the appropriate mode indices, or frequency tuning, selecting mode frequencies to compensate for the slower propagation of higher-order modes. This study is relevant for laser-plasma acceleration experiments demanding greater control over the transverse focusing forces and electron bunch properties.
{"title":"Transverse Wakefield Control via Phase-Matched Laser Modes in Plasma Channels","authors":"B. Djordjević, C. Benedetti, C. Schroeder, E. Esarey, W. Leemans","doi":"10.1109/AAC.2018.8659427","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659427","url":null,"abstract":"The superposition of higher-order laser modes can be used to control the laser-driven transverse wakefields in a laser-plasma accelerator operating in the quasi-linear regime. To avoid slippage and beating, modes must have equal group velocities. This can be accomplished by geometric tuning, selecting the appropriate mode indices, or frequency tuning, selecting mode frequencies to compensate for the slower propagation of higher-order modes. This study is relevant for laser-plasma acceleration experiments demanding greater control over the transverse focusing forces and electron bunch properties.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122369876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659390
Yu-Hsin Chen, L. Johnson, D. Gordon, D. Kaganovich, B. Hafizi, M. Babzien, M. Polyanskiy, I. Pogorelsky, M. Palmer
We propose to compress a high-energy, picosecond long-wave infrared (LWIR) pulse in the plasma using backward Raman amplification (BRA). The apparatus is in a counter-propagating geometry that employs a 3 J, 3 ps CO2 laser pulse as the pump, and a microjoule, broadband femtosecond source as the seed. Simulations show that the amplified pulse can reach ~ 5 TW with a pulse duration of ~ 100 fs. Compared with earlier near-infrared BRA experiments, the proposed configuration uses a significantly shorter pump pulse duration, which may reduce limiting factors such as ion motions and Raman forward scattering. The experiment will be carried out at Accelerator Test Facility at Brookhaven National Laboratory.
{"title":"Compression of Terawatt Long-Wavelength Laser Pulses Through Backward Raman Amplification","authors":"Yu-Hsin Chen, L. Johnson, D. Gordon, D. Kaganovich, B. Hafizi, M. Babzien, M. Polyanskiy, I. Pogorelsky, M. Palmer","doi":"10.1109/AAC.2018.8659390","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659390","url":null,"abstract":"We propose to compress a high-energy, picosecond long-wave infrared (LWIR) pulse in the plasma using backward Raman amplification (BRA). The apparatus is in a counter-propagating geometry that employs a 3 J, 3 ps CO2 laser pulse as the pump, and a microjoule, broadband femtosecond source as the seed. Simulations show that the amplified pulse can reach ~ 5 TW with a pulse duration of ~ 100 fs. Compared with earlier near-infrared BRA experiments, the proposed configuration uses a significantly shorter pump pulse duration, which may reduce limiting factors such as ion motions and Raman forward scattering. The experiment will be carried out at Accelerator Test Facility at Brookhaven National Laboratory.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122292977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659443
B. Guo, Xinlu Xu, J. Hua, Yipeng Wu, C. Pai, W. Lu
Betatron radiation, emitted from the relativistic electrons in plasma accelerators, is generally incoherent and broadband. However, if the electron beam has a coherent structure, it has the potential to emit coherent betatron radiation. In this paper, we show that coherent monochromatic betatron radiation can be emitted from the nano-bunched electron beams generated by laser-triggered ionization injection in plasma wakefield accelerators. Donut-like coherent monochromatic betatron radiation (~5 eV) without orbital angular momentum is generated by use of a linearly polarized laser, while coherent monochromatic betatron radiation (~ 10 e V) with orbital angular momentum can be potentially produced by use of a circularly polarized laser.
{"title":"Generation of Coherent Monochromatic Betatron Radiation by Laser-triggered Ionization Injection in Plasma Accelerators","authors":"B. Guo, Xinlu Xu, J. Hua, Yipeng Wu, C. Pai, W. Lu","doi":"10.1109/AAC.2018.8659443","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659443","url":null,"abstract":"Betatron radiation, emitted from the relativistic electrons in plasma accelerators, is generally incoherent and broadband. However, if the electron beam has a coherent structure, it has the potential to emit coherent betatron radiation. In this paper, we show that coherent monochromatic betatron radiation can be emitted from the nano-bunched electron beams generated by laser-triggered ionization injection in plasma wakefield accelerators. Donut-like coherent monochromatic betatron radiation (~5 eV) without orbital angular momentum is generated by use of a linearly polarized laser, while coherent monochromatic betatron radiation (~ 10 e V) with orbital angular momentum can be potentially produced by use of a circularly polarized laser.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128905256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659420
S. Kalmykov, A. Englesbe, J. Elle, A. Schmitt-Sody
Photoionization of an ambient gas by a tightly focused, femtosecond, weakly relativistic laser pulse leaves behind the pulse a column of electron density (a “filament”). At the column surface, the density drops to zero within a thin (micron-scale) boundary layer. Ponderomotive force of the pulse drives within the filament a cylindrical wave of charge separation (laser wake). If the pulse waist size is much smaller than the Langmuir wavelength, electron current in the wake is mostly transverse. In the filament surface area, this current rapidly decays (electrons, crossing the sharp density gradient, phase out of wake within a few Langmuir oscillation cycles.) Coupling electron wake velocity to the sharp radial density gradient generates at the filament surface a short-lived, almost aperiodic rotational current. This current serves as a source for a broadband THz electromagnetic pulse co-moving with the wake. As long as the background gas is uniform, the wake phase velocity is slightly subluminal, and the THz pulse is evanescent in the radial direction. The evanescence is, however, slow, occurring on a millimeter to centimeter length scale. Properties of the evanescent THz pulse contain information on the wake currents, and may thus serve as optical diagnostics.
{"title":"Generation of Broadband THz Pulses by Laser Wakefield at Radial Boundary of Plasma Column","authors":"S. Kalmykov, A. Englesbe, J. Elle, A. Schmitt-Sody","doi":"10.1109/AAC.2018.8659420","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659420","url":null,"abstract":"Photoionization of an ambient gas by a tightly focused, femtosecond, weakly relativistic laser pulse leaves behind the pulse a column of electron density (a “filament”). At the column surface, the density drops to zero within a thin (micron-scale) boundary layer. Ponderomotive force of the pulse drives within the filament a cylindrical wave of charge separation (laser wake). If the pulse waist size is much smaller than the Langmuir wavelength, electron current in the wake is mostly transverse. In the filament surface area, this current rapidly decays (electrons, crossing the sharp density gradient, phase out of wake within a few Langmuir oscillation cycles.) Coupling electron wake velocity to the sharp radial density gradient generates at the filament surface a short-lived, almost aperiodic rotational current. This current serves as a source for a broadband THz electromagnetic pulse co-moving with the wake. As long as the background gas is uniform, the wake phase velocity is slightly subluminal, and the THz pulse is evanescent in the radial direction. The evanescence is, however, slow, occurring on a millimeter to centimeter length scale. Properties of the evanescent THz pulse contain information on the wake currents, and may thus serve as optical diagnostics.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132555014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659435
Hiroki Fujii, W. An, K. Marsh, W. Mori, C. Joshi
We numerically study the generation and acceleration of positron by injecting two electron bunches on thin high-Z target followed by a plasma. This concept is experimentally realizable at Facility for Advanced Accelerator Experimental Tests (FACET) II, which is under construction at SLAC National Accelerator Laboratory.
{"title":"Generation and Acceleration of the Trailing Positron Bunch Using a Drive- Trailing Electron Bunch Configuration","authors":"Hiroki Fujii, W. An, K. Marsh, W. Mori, C. Joshi","doi":"10.1109/AAC.2018.8659435","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659435","url":null,"abstract":"We numerically study the generation and acceleration of positron by injecting two electron bunches on thin high-Z target followed by a plasma. This concept is experimentally realizable at Facility for Advanced Accelerator Experimental Tests (FACET) II, which is under construction at SLAC National Accelerator Laboratory.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-01DOI: 10.1109/AAC.2018.8659379
N. Moody, R. Tarkeshian
This paper presents a brief summary of the contributions to Working Group 5 (WG5): Beam Sources, Monitoring, and Control. This working group was part of the 2018 Advanced Accelerator Concepts Workshop held at Breckenridge, Colorado, from August 12–17, 2018. There was wide-range of topics covered by this working group ranging from facility updates, new diagnostics and instrumentation schemes, new characterization methods and demonstrations (for both plasma and beam) as well as several advanced concepts that fall outside the scope of the other working groups.
{"title":"Summary of Working Group 5: Beam Sources, Monitoring, and Control","authors":"N. Moody, R. Tarkeshian","doi":"10.1109/AAC.2018.8659379","DOIUrl":"https://doi.org/10.1109/AAC.2018.8659379","url":null,"abstract":"This paper presents a brief summary of the contributions to Working Group 5 (WG5): Beam Sources, Monitoring, and Control. This working group was part of the 2018 Advanced Accelerator Concepts Workshop held at Breckenridge, Colorado, from August 12–17, 2018. There was wide-range of topics covered by this working group ranging from facility updates, new diagnostics and instrumentation schemes, new characterization methods and demonstrations (for both plasma and beam) as well as several advanced concepts that fall outside the scope of the other working groups.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116789349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-10-23DOI: 10.1103/PhysRevAccelBeams.21.071301
P. Baxevanis, G. Stupakov
In the blowout regime of plasma wakefield acceleration (PWFA), which is the most relevant configuration for current and future applications and experiments, the plasma flow that is excited by the ultra-relativistic drive beam is highly nonlinear. Thus, fast and accurate simulation codes are indispensable tools in the study of this extremely important problem. We have developed a novel algorithm that deals with the propagation of axisymmetric bunches of otherwise arbitrary profile through a cold plasma of uniform density. In contrast to the existing PWFA simulation tools, our code PLasma-Electron Beam Simulations (PLEBS) uses a new computational scheme which ensures that the transverse and longitudinal directions are completely decoupled-a feature which significantly enhances the speed and robustness of the new method. Our numerical results are benchmarked against the QuickPIC code [14] and excellent agreement is established between the two approaches.
{"title":"Novel Fast Simulation Technique for Axisymmetric Plasma Wakefield Acceleration Configurations in the Blowout Regime","authors":"P. Baxevanis, G. Stupakov","doi":"10.1103/PhysRevAccelBeams.21.071301","DOIUrl":"https://doi.org/10.1103/PhysRevAccelBeams.21.071301","url":null,"abstract":"In the blowout regime of plasma wakefield acceleration (PWFA), which is the most relevant configuration for current and future applications and experiments, the plasma flow that is excited by the ultra-relativistic drive beam is highly nonlinear. Thus, fast and accurate simulation codes are indispensable tools in the study of this extremely important problem. We have developed a novel algorithm that deals with the propagation of axisymmetric bunches of otherwise arbitrary profile through a cold plasma of uniform density. In contrast to the existing PWFA simulation tools, our code PLasma-Electron Beam Simulations (PLEBS) uses a new computational scheme which ensures that the transverse and longitudinal directions are completely decoupled-a feature which significantly enhances the speed and robustness of the new method. Our numerical results are benchmarked against the QuickPIC code [14] and excellent agreement is established between the two approaches.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126011601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1109/aac.2018.8659383
L. Schächter, W. Kimura
We formulate the set of equations that describe the trajectories of electrons counter-propagating along a radially polarized optical Bessel beam (OBB). It is shown that a significant fraction of the electrons can be transversally trapped by the OBB even in the case of “un-matched” injection. Moreover, these transversally trapped particles (TTP) can be transported without loss over more than half a meter long interaction region.
{"title":"Electron Beam Guiding with a Laser Bessel Beam","authors":"L. Schächter, W. Kimura","doi":"10.1109/aac.2018.8659383","DOIUrl":"https://doi.org/10.1109/aac.2018.8659383","url":null,"abstract":"We formulate the set of equations that describe the trajectories of electrons counter-propagating along a radially polarized optical Bessel beam (OBB). It is shown that a significant fraction of the electrons can be transversally trapped by the OBB even in the case of “un-matched” injection. Moreover, these transversally trapped particles (TTP) can be transported without loss over more than half a meter long interaction region.","PeriodicalId":339772,"journal":{"name":"2018 IEEE Advanced Accelerator Concepts Workshop (AAC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124984357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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