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1.
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Pair Spectrometer for FACET-II
/ Naranjo, Brian (UCLA) ; Andonian, Gerard (UCLA) ; Cavanagh, Niall (Queen's U., Belfast) ; Di Piazza, Antonino (Heidelberg, Max Planck Inst.) ; Fukasawa, Atsushi (UCLA) ; Gerstmayr, Elias (SLAC) ; Holtzapple, Robert (Cal. Poly.) ; Keitel, Christoph (Heidelberg, Max Planck Inst.) ; Majernik, Nathan (UCLA) ; Meuren, Sebastian (SLAC) et al.
We present the design of a pair spectrometer for use at FACET-II, where there is a need for spectroscopy of photons having energies up to 10 GeV. Incoming gammas are converted to high-energy positron-electron pairs, which are then subsequently analyzed in a dipole magnet. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 4336-4339
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.4336-4339
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2.
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First Results of the IOTA Ring Research at Fermilab
/ Valishev, Alexander (Fermilab) ; Arodzero, Anatoli (RadiaBeam Tech.) ; Broemmelsiek, Daniel (Fermilab) ; Bruhwiler, David (RadiaSoft, Boulder) ; Burov, Alexey (Fermilab) ; Carlson, Kermit (Fermilab) ; Cathey, Brandon (Fermilab) ; Chattopadhyay, Swapan (Northern Illinois U. ; Fermilab) ; Eddy, Nathan (Fermilab) ; Edelen, Jonathan (RadiaSoft, Boulder) et al.
The IOTA ring at Fermilab is a unique machine exclusively dedicated to accelerator beam physics R&D.; The research conducted at IOTA includes topics such as nonlinear integrable optics, suppression of coherent beam instabilities, optical stochastic cooling and quantum science experiments. In this talk we report on the first results of experiments with implementations of nonlinear integrable beam optics. [...]
2021 - 6 p.
- Published in : 10.18429/JACoW-IPAC2021-MOXB02
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, Br, 24 - 28 May 2021, pp.19-24
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3.
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Shaping trailing beams for beam loading via beam-induced-ionization injection at FACET
/ Amorim, Lígia Diana (SUNY, Stony Brook) ; Vafaei-Najafabadi, Navid (SUNY, Stony Brook) ; Emma, Claudio (SLAC) ; Clarke, Christine I (SLAC) ; Green, Selina Z (SLAC) ; Storey, Doug (SLAC) ; White, Glen (SLAC) ; O'Shea, Brendan (SLAC) ; Hogan, Mark J (SLAC) ; Yakimenko, Vitaly (SLAC) et al.
Recent progress in plasma based accelerator technology has demonstrated its ability to deliver high energy (GeV) beams in compact structures (centimeter to meter scale plasmas). Current developments of that technology are oriented toward producing beams with quality and energy spread comparable to those obtained using standard accelerating structures. [...]
2019 - 10 p.
- Published in : Phys. Rev. Accel. Beams 22 (2019) 111303
Fulltext: PDF;
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4.
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Producing multi-coloured bunches through beam-induced ionization injection in plasma wakefield accelerator
/ Vafaei-Najafabadi, N (Stony Brook U.) ; Amorim, L D (Stony Brook U.) ; Adli, E (Oslo U.) ; An, W (UCLA) ; Clarke, C I (SLAC) ; Clayton, C E (UCLA) ; Corde, S (Palaiseau, Lab. Opt. Appl.) ; Gessner, S (CERN) ; Green, S Z (SLAC) ; Hogan, M J (SLAC) et al.
This paper discusses the properties of electron beams formed in plasma wakefield accelerators through ionization injection. In particular, the potential for generating a beam composed of co-located multi-colour beamlets is demonstrated in the case where the ionization is initiated by the evolving charge field of the drive beam itself. [...]
2019
- Published in : Philos. Trans. R. Soc. Lond. A 377 (2019) 20180184
In : Directions in particle beam-driven plasma wakefield acceleration : Theo Murphy meeting, Newport Pagnell, Buckinghamshire, UK, 4 - 5 Jun 2019, pp.20180184
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5.
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Betatron radiation and emittance growth in plasma wakefield accelerators
/ San Miguel Claveria, P (Palaiseau, Lab. Opt. Appl.) ; Adli, E (Oslo U.) ; Amorim, L D (Stony Brook U.) ; An, W (UCLA) ; Clayton, C E (UCLA) ; Corde, S (Palaiseau, Lab. Opt. Appl.) ; Gessner, S (CERN) ; Hogan, M J (SLAC) ; Joshi, C (UCLA) ; Kononenko, O (Palaiseau, Lab. Opt. Appl.) et al.
Beam-driven plasma wakefield acceleration (PWFA) has demonstrated significant progress during the past two decades of research. The new Facility for Advanced Accelerator Experimental Tests (FACET) II, currently under construction, will provide 10 GeV electron beams with unprecedented parameters for the next generation of PWFA experiments. [...]
2019 - 9 p.
- Published in : Philos. Trans. R. Soc. Lond. A 377 (2019) 20180173
Fulltext from publisher: PDF;
In : Directions in particle beam-driven plasma wakefield acceleration : Theo Murphy meeting, Newport Pagnell, Buckinghamshire, UK, 4 - 5 Jun 2019, pp.20180173
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6.
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Plasma wakefield acceleration experiments at FACET II
/ Joshi, C (UCLA) ; Adli, E (Oslo U.) ; An, W (UCLA) ; Clayton, C E (UCLA) ; Corde, S (Palaiseau, Lab. Opt. Appl.) ; Gessner, S (CERN) ; Hogan, M J (SLAC) ; Litos, M (Colorado U.) ; Lu, W (Tsinghua U., Beijing, Dept. Eng. Phys.) ; Marsh, K A (UCLA) et al.
During the past two decades of research, the ultra-relativistic beam-driven plasma wakefield accelerator (PWFA) concept has achieved many significant milestones. These include the demonstration of ultra-high gradient acceleration of electrons over meter-scale plasma accelerator structures, efficient acceleration of a narrow energy spread electron bunch at high-gradients, positron acceleration using wakes in uniform plasmas and in hollow plasma channels, and demonstrating that highly nonlinear wakes in the 'blow-out regime' have the electric field structure necessary for preserving the emittance of the accelerating bunch. [...]
2018 - 14 p.
- Published in : Plasma Phys. Control. Fusion 60 (2018) 034001
Fulltext: PDF;
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7.
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Measurement of transverse wakefields induced by a misaligned positron bunch in a hollow channel plasma accelerator
/ Lindstrøm, C.A. (Oslo U.) ; Adli, E. (Oslo U.) ; Allen, J.M. (SLAC) ; An, W. (UCLA, Los Angeles (main)) ; Beekman, C. (Palaiseau, Lab. Opt. Appl.) ; Clarke, C.I. (SLAC) ; Clayton, C.E. (UCLA, Los Angeles (main)) ; Corde, S. (Palaiseau, Lab. Opt. Appl.) ; Doche, A. (Palaiseau, Lab. Opt. Appl.) ; Frederico, J. (SLAC) et al.
Hollow channel plasma wakefield acceleration is a proposed method to provide high acceleration gradients for electrons and positrons alike: a key to future lepton colliders. However, beams which are misaligned from the channel axis induce strong transverse wakefields, deflecting beams and reducing the collider luminosity. [...]
arXiv:1802.09000.-
2018-03-27 - 5 p.
- Published in : Phys. Rev. Lett. 120 (2018) 124802
Fulltext: PDF; Fulltext from Publisher: PDF;
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8.
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First Measurements of Trojan Horse Injection in a Plasma Wakefield Accelerator
/ Hidding, Bernhard (Glasgow U. ; Cockcroft Inst. Accel. Sci. Tech.) ; Adli, Erik (Oslo U. ; CERN) ; Andonian, Gerard (UCLA ; RadiaBeam Tech.) ; Beaton, Andrew (Cockcroft Inst. Accel. Sci. Tech. ; Glasgow U.) ; Bruhwiler, David (RadiaSoft, Boulder) ; Cary, John (Tech-X, Boulder) ; Clarke, Christine (SLAC) ; Deng, Aihua (UCLA) ; Downer, Michael (Texas U.) ; Gessner, Spencer (CERN) et al.
Plasma accelerators support accelerating fields of 100's of GV/m over meter-scale distances and routinely produce femtosecond-scale, multi-kA electron bunches. The so called Trojan Horse underdense photocathode plasma wakefield acceleration scheme combines state-of-the-art accelerator technology with laser and plasma methods and paves the way to improve beam quality as regards emittance and energy spread by many orders of magnitude. [...]
CERN-ACC-2017-190.-
2017 - 6 p.
- Published in : 10.18429/JACoW-IPAC2017-TUYB1
Fulltext: PDF;
In : 8th International Particle Accelerator Conference, Copenhagen, Denmark, 14 - 19 May 2017, pp.TUYB1
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9.
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10.
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Measuring the Self-modulation Instability of Electron and Positron Bunches in Plasmas
/ Muggli, Patric (Garching, Max Planck Inst. Plasmaphys.) ; Adli, Erik (Oslo U.) ; Allen, James (SLAC) ; Amorim, Ligia (Lisbon, IST) ; Andonian, Gerard (UCLA) ; Gessner, Spencer (SLAC) ; Green, Selina (SLAC) ; Hogan, Mark (SLAC) ; Joshi, Chan (UCLA) ; Litos, Michael (SLAC) et al.
The self-modulation instability (SMI) can be used to transform a long, charged particle bunch into a train of periodically spaced shorter bunches. The SMI occurs in a plasma when the plasma wake period is much shorter than the bunch length. [...]
2015 - 3 p.
- Published in : (2015) , pp. WEPWA008
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.WEPWA008
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