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1.
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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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2.
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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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3.
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Optical Injection into Laser Wake Field Accelerators
/ Cary, John R ; Bruhwiler, David L ; Esarey, Eric ; Geddes, Cameron G R ; Giacone, Rodolfo ; Leemans, Wim ; Nieter, Chet
The accelerating gradient of laser-generated wake fields in plasmas can be orders of magnitude greater than the gradients obtainable in traditional, rf structures. One of the hurdles to overcome on the road to practical utilization of said plasma wake fields for production of high energy particles is the creation of quality beams having significant charge, low emittance, and narrow energy spread. [...]
2005
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TOPA003
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4.
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5.
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Development of Advanced Models for 3D Photocathode PIC Simulations
/ Dimitrov, Dimitre ; Bruhwiler, David L ; Cary, John R ; Feldman, Donald ; Jensen, Kevin ; Messmer, Peter ; Stoltz, Peter
Codes for simulating photocathode electron guns invariably assume the emission of an idealized electron distribution from the cathode, regardless of the particular particle emission model that is implemented. The output of such simulations, a relatively clean and smooth distribution with very little variation as a function of the azimuthal angle, is inconsistent with the highly irregular and asymmetric electron bunches seen in experimental diagnostics. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2583
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6.
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Numerical Studies of the Friction Force for the RHIC Electron Cooler
/ Fedotov, Alexei V ; Abell, Dan T ; Ben-Zvi, Ilan ; Bruhwiler, David L ; Busby, Richard ; Litvinenko, Vladimir N ; Schoessow, Paul
Accurate calculation of electron cooling times requires an accurate description of the dynamical friction force. The proposed RHIC cooler will require ~55 MeV electrons, which must be obtained from an RF linac, leading to very high transverse electron temperatures. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4278
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7.
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Simulations of High-Energy Electron Cooling
/ Fedotov, Alexei V ; Ben-Zvi, Ilan ; Bruhwiler, David L ; Eidelman, Yury I ; Litvinenko, Vladimir N ; Malitsky, Nikolay ; Meshkov, Igor ; Sidorin, Anatoly O ; Smirnov, Alexander V ; Troubnikov, Grigory
High-energy electron cooling of RHIC presents many unique features and challenges. An accurate estimate of the cooling times requires a detailed calculation of the cooling process, which takes place simultaneously with various diffusive mechanisms in RHIC. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4251
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8.
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Consideration of Relativistic Dynamics in High-Energy Electron Coolers
/ Bruhwiler, David L ; Bell, George I
A proposed electron cooler for RHIC would use ~55 MeV electrons to cool fully-ionized 100 GeV/nucleon gold ions.* At two locations in the collider ring, the electrons and ions will co-propagate for ~13 m, with velocities close to c and gamma>100. To lowest-order, one can Lorentz transform all physical quantities into the beam frame and calculate the dynamical friction forces assuming a nonrelativisitc, electrostatic plasma. [...]
2005
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TPAT088
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9.
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The Effect of Magnetic Field Errors on Dynamical Friction in Electron Coolers
/ Bruhwiler, David L ; Abell, Dan T ; Busby, Richard ; Fedotov, Alexei V ; Litvinenko, Vladimir N ; Veitzer, Seth A
A proposed luminosity upgrade to the Relativistic Heavy Ion Collider (RHIC) includes a novel electron cooling section,* which would use ~55 MeV electrons to cool fully-ionized 100 GeV/nucleon gold ions. A strong (1-5 T) solenoidal field will be used to magnetize the electrons and thus enhance the dynamical friction force on the ions. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.4206
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10.
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Electron Cooling of RHIC
/ Ben-Zvi, Ilan ; Abell, Dan T ; Barton, Donald ; Beavis, Dana ; Blaskiewicz, Michael ; Bluem, Hans ; Brennan, Joseph M ; Bruhwiler, David L ; Burger, Al ; Burov, Alexey et al.
We report progress on the R&D; program for electron-cooling of the Relativistic Heavy Ion Collider (RHIC). This electron cooler is designed to cool 100 GeV/nucleon at storage energy using 54 MeV electrons. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2741
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