Experimental Study of Current Filamentation Instability

Allen, Brian; Yakimenko, V.; Babzien, M.; Fedurin, M.; Kusche, K.; Muggli, P.

doi:10.1103/physrevlett.109.185007

Cited by 74 publications

(48 citation statements)

References 14 publications

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“…• The demonstration of the high-gradient, controlled acceleration of a short electron bunch trailing the driver electron-bunch in a high-density plasma [15]; • The observation of filamentation of an electron beam propagating in plasmas at various densities [16];…”

Section: Atf -Accelerator Stewardship Facilitymentioning

confidence: 99%

In service of accelerator stewardship: The BNL ATF and its upgrade

Ben‐Zvi¹,

Pogorelsky²

2016

AIP Conference Proceedings

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Abstract. The Accelerator Test Facility (ATF) at Brookhaven National Laboratory has served as a user facility for accelerator science for over a quarter of a century. Since its inception, the ATF in fact had undertaken the mission of accelerator stewardship of the Office of High Energy Physics (OHEP), even before the concept was fully formulated. In bringing advanced accelerator-science and technology to individual users, small groups of researchers, and large collaborations, the ATF offers a unique combination of a high-brightness 80-MeV electron beam synchronized to a 2-TW picosecond CO 2 laser. The ATF now the flagship of the Accelerator Stewardship program of the OHEP, and thus will provide opportunities to small businesses to develop accelerator-based products, running the full gamut from the laboratory to the applications. At this juncture, the ATF has embarked upon a transformational upgrade of its capabilities. We describe our plan for greatly expanding the ATF's floor space, and the number of independent experiment halls, for upgrading the electron beam's energy in stages to 500-MeV, and the CO 2 laser's peak power to 100 TW. This upgrade will afford a new, vast space for the laser and electron beam for conducting new research in accelerator science and technology that is at the forefront advanced accelerators and radiation sources, and to support the most innovative ideas in these fields. We will discuss emerging opportunities for scientific breakthroughs that include the following: Plasma Wakefield Acceleration (PWFA), extending the researches already pursued at the ATF; Laser Wakefield Acceleration (LWFA) wherein the longer laser wavelengths will engender a proportional increase in the beam's charge, while our linac will assure, for the first-time, the opportunity for undertaking detailed studies of seeding and staging of the LWFA. The laser will extend proton acceleration to the 100-200 MeV level, as is demanded for certain medical applications.

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Section: Atf -Accelerator Stewardship Facilitymentioning

confidence: 99%

In service of accelerator stewardship: The BNL ATF and its upgrade

Ben‐Zvi¹,

Pogorelsky²

2016

AIP Conference Proceedings

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“…The signature of first unmistakably comes from measuring the matched beta-function at the end of the plasma. This will be performed using the optical measurement system developed for the beam filamentation experiment 14 , which has been shown to be compatible with the plasma source, and gives appropriate few micron resolution. We note that the plasma response (not the fields per see) may also be directly diagnosed using the PWFA holography setup now being tested at the ATF.…”

Section: Measurementsmentioning

confidence: 99%

Plasma wakefields in the quasi-nonlinear regime: Experiments at ATF

Rosenzweig

Andonian

Barber

et al. 2013

AIP Conference Proceedings

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A nonlinear theory for multidimensional relativistic plasma wave wakefields Physics of Plasmas 13, 056709 (2006) Abstract. In this work we present details of planned experiments to investigate certain aspects of the quasi non linear regime (QNL) of plasma wakefield acceleration (PWFA). In the QNL regime it is, in principal, possible to combine the benefits of both nonlinear and linear PWFA. That is, beams of high quality can be maintained through acceleration due to the complete ejection of plasma electrons from beam occupied region, while large energy gains can be achieved through use of transformer ratio increasing schemes, such as ramped bunch trains. With the addition of an short focal length PMQ triplet capable of focusing beams to the few micron scale and the ability to generate tunable bunch trains, the Accelerator Test Facility (ATF) at Brookhaven National Lab offers the unique capabilities to probe these characteristics of the QNL regime.

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“…The available theoretical models for CFI are restricted mainly to a purely temporal analysis [2,3,16] and do not capture any spatial characteristics of the instabilities, which can be very relevant for finite size systems [11][12][13][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Spatial-temporal evolution of the current filamentation instability

et al. 2015

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The spatial-temporal evolution of the purely transverse current filamentation instability is analyzed by deriving a single partial differential equation for the instability and obtaining the analytical solutions for the spatially and temporally growing current filament mode. When the beam front always encounters fresh plasma, our analysis shows that the instability grows spatially from the beam front to the back up to a certain critical beam length; then the instability acquires a purely temporal growth. This critical beam length increases linearly with time and in the non-relativistic regime it is proportional to the beam velocity. In the relativistic regime the critical length is inversely proportional to the cube of the beam Lorentz factor γ b 0 . Thus, in the ultra-relativistic regime the instability immediately acquires a purely temporal growth all over the beam. The analytical results are in good agreement with multidimensional particle-in-cell simulations performed with OSIRIS. Relevance of the current study to recent and future experiments on fireball beams is also addressed.

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Experimental Study of Current Filamentation Instability

Cited by 74 publications

References 14 publications

In service of accelerator stewardship: The BNL ATF and its upgrade

In service of accelerator stewardship: The BNL ATF and its upgrade

Plasma wakefields in the quasi-nonlinear regime: Experiments at ATF

Spatial-temporal evolution of the current filamentation instability

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