http://prst-ab.aps.org/ Recent articles in Physical Review Special Topics - Accelerators and Beams en-us Copyright (c) 2009 The American Physical Society 2009-11-20T22:15:50-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-20T22:15:50-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevSTAB.12.114201 Author(s): O. Boine-Frankenheim and V. Kornilov<br/>The effect of space charge and image currents on the transverse Schottky spectrum for bunched beams has been investigated using simulations combined with an analytic model. We found a good agreement between the shifts of synchrotron satellites observed in the simulation noise spectrum and a simplifi...<br/>[Phys. Rev. ST Accel. Beams 12, 114201] Published Fri Nov 20, 2009 O. Boine-Frankenheim and V. Kornilov 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.114201 Phys. Rev. ST Accel. Beams 12, 114201 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-20T00:00:00-05:00 114201 Low-Energy, Multiple-Particle Dynamics Low-Energy, Multiple-Particle Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.114801 Author(s): Steven M. Lund, Takashi Kikuchi, and Ronald C. Davidson<br/>Self-consistent Vlasov-Poisson simulations of beams with high space-charge intensity often require specification of initial phase-space distributions that reflect properties of a beam that is well adapted to the transport channel—both in terms of low-order rms (envelope) properties as well as the ...<br/>[Phys. Rev. ST Accel. Beams 12, 114801] Published Thu Nov 19, 2009 Steven M. Lund, Takashi Kikuchi, and Ronald C. Davidson 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.114801 Phys. Rev. ST Accel. Beams 12, 114801 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-19T00:00:00-05:00 114801 Review Articles Review Articles http://link.aps.org/doi/10.1103/PhysRevSTAB.12.113502 Author(s): S.-d. Park, J.-h. Kim, J. Han, M. Yoon, S. Y. Park, D. W. Choi, J. W. Shin, and J. H. So<br/>Recent measurement of voltage V and current I of the electron gun of a relativistic klystron amplifier revealed that the resulting current-voltage relationship appeared to differ from the usual Child-Langmuir law (I∝V^{3/2} ) especially during the initial period of voltage increase. This paper att...<br/>[Phys. Rev. ST Accel. Beams 12, 113502] Published Tue Nov 17, 2009 S.-d. Park, J.-h. Kim, J. Han, M. Yoon, S. Y. Park, D. W. Choi, J. W. Shin, and J. H. So 2009-11-17T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.113502 Phys. Rev. ST Accel. Beams 12, 113502 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-17T00:00:00-05:00 113502 Other Accelerator Subsystems and Technologies Other Accelerator Subsystems and Technologies http://link.aps.org/doi/10.1103/PhysRevSTAB.12.110401 Author(s): Xin-Bing Cheng, Jin-Liang Liu, Yu Zhang, Jia-Huai Feng, and Bao-Liang Qian<br/>The flat voltage of the main pulse on the load of intense electron-beam accelerators (IEBA) is one of the important factors which affect the quality and characteristic of the output beam current of IEBA. In this paper, the effect of the transition section between the Blumlein pulse forming line (BPF...<br/>[Phys. Rev. ST Accel. Beams 12, 110401] Published Tue Nov 17, 2009 Xin-Bing Cheng, Jin-Liang Liu, Yu Zhang, Jia-Huai Feng, and Bao-Liang Qian 2009-11-17T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.110401 Phys. Rev. ST Accel. Beams 12, 110401 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-17T00:00:00-05:00 110401 Pulsed-Power Accelerators, Technology, and Dynamics Pulsed-Power Accelerators, Technology, and Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.110702 Author(s): Yasunori Tanimoto, Tohru Honda, and Shogo Sakanaka<br/>Sudden decreases in the beam lifetime, which are attributed to the dust trappings, sometimes occur at the electron storage ring Photon Factory Advanced Ring (PF-AR). Since these dust events cause difficulties in user operations, we have been carefully observing this phenomenon for many years. Our ob...<br/>[Phys. Rev. ST Accel. Beams 12, 110702] Published Mon Nov 16, 2009 Yasunori Tanimoto, Tohru Honda, and Shogo Sakanaka 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.110702 Phys. Rev. ST Accel. Beams 12, 110702 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-16T00:00:00-05:00 110702 Synchrotron Radiation and Free-Electron Lasers Synchrotron Radiation and Free-Electron Lasers http://link.aps.org/doi/10.1103/PhysRevSTAB.12.119901 Author(s): David H. Dowell and John F. Schmerge<br/>[Phys. Rev. ST Accel. Beams 12, 119901] Published Thu Nov 12, 2009 David H. Dowell and John F. Schmerge 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.119901 Phys. Rev. ST Accel. Beams 12, 119901 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-12T00:00:00-05:00 119901 Errata Errata http://link.aps.org/doi/10.1103/PhysRevSTAB.12.111302 Author(s): W. van Dijk, M. J. van der Wiel, and G. J. Brussaard<br/>A new scheme for the compression of electron bunches is proposed. This scheme uses a plasma wave generated by a high intensity laser pulse to compress an electron bunch produced by a typical rf photogun. In the scheme, the electron bunch is injected into a plasma channel in front of the high intensi...<br/>[Phys. Rev. ST Accel. Beams 12, 111302] Published Thu Nov 12, 2009 W. van Dijk, M. J. van der Wiel, and G. J. Brussaard 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.111302 Phys. Rev. ST Accel. Beams 12, 111302 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-12T00:00:00-05:00 111302 New Acceleration Techniques New Acceleration Techniques http://link.aps.org/doi/10.1103/PhysRevSTAB.12.114701 Author(s): Valery Shemelin<br/>An algorithm for optimization of the multicell cavity cells is proposed. Inner cells are optimized for minimal losses or minimal magnetic field, when the aperture diameter, E_{pk} /E_{acc} —the ratio of peak electric field to the accelerating field, and the wall slope angle are given. Optimization...<br/>[Phys. Rev. ST Accel. Beams 12, 114701] Published Wed Nov 11, 2009 Valery Shemelin 2009-11-11T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.114701 Phys. Rev. ST Accel. Beams 12, 114701 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-11T00:00:00-05:00 114701 Applications Applications http://link.aps.org/doi/10.1103/PhysRevSTAB.12.111301 Author(s): A. I. Titov, B. Kämpfer, and H. Takabe<br/>We analyze μ^{+} μ^{-} pair production generated by high-energy electrons emerging from a laser-wakefield accelerator. The μ^{+} μ^{-} pairs are created in a solid thick high-Z target, following the electron accelerating plasma region. Numerical estimates are presented for 1 to 10 GeV electron ...<br/>[Phys. Rev. ST Accel. Beams 12, 111301] Published Wed Nov 11, 2009 A. I. Titov, B. Kämpfer, and H. Takabe 2009-11-11T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.111301 Phys. Rev. ST Accel. Beams 12, 111301 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-11T00:00:00-05:00 111301 New Acceleration Techniques New Acceleration Techniques http://link.aps.org/doi/10.1103/PhysRevSTAB.12.113501 Author(s): Jaeeun Han, Jung-ho Kim, Sang-duck Park, Moohyun Yoon, Soo Yong Park, Do Won Choi, Jin Woo Shin, and Joon Ho So<br/>A coaxial-type water load was used to measure the voltage output from a Marx generator for a high power microwave source. This output had a rise time of 20 ns, a pulse duration of a few hundred ns, and an amplitude up to 500 kV. The design of the coaxial water load showed that it is an ideal res...<br/>[Phys. Rev. ST Accel. Beams 12, 113501] Published Mon Nov 09, 2009 Jaeeun Han, Jung-ho Kim, Sang-duck Park, Moohyun Yoon, Soo Yong Park, Do Won Choi, Jin Woo Shin, and Joon Ho So 2009-11-09T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.113501 Phys. Rev. ST Accel. Beams 12, 113501 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-09T00:00:00-05:00 113501 Other Accelerator Subsystems and Technologies Other Accelerator Subsystems and Technologies http://link.aps.org/doi/10.1103/PhysRevSTAB.12.110701 Author(s): J. Gardelle, L. Courtois, P. Modin, and J. T. Donohue<br/>A few years ago a new theory for producing coherent Smith-Purcell (SP) radiation from an initially continuous beam was proposed. This experiment confirms that two-dimensional theory. The beam was typically 10 cm wide, a few mm thick, with a peak current of 200 A and beam energy of 85 keV. The 10...<br/>[Phys. Rev. ST Accel. Beams 12, 110701] Published Mon Nov 09, 2009 J. Gardelle, L. Courtois, P. Modin, and J. T. Donohue 2009-11-09T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.110701 Phys. Rev. ST Accel. Beams 12, 110701 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-09T00:00:00-05:00 110701 Synchrotron Radiation and Free-Electron Lasers Synchrotron Radiation and Free-Electron Lasers http://link.aps.org/doi/10.1103/PhysRevSTAB.12.114001 Author(s): Stephen G. Peggs and Valentina Previtali<br/>The grazing function g is introduced—a synchrobetatron optical quantity that is analogous (and closely connected) to the Twiss and dispersion functions β, α, η, and η^{′} . It parametrizes the rate of change of total angle with respect to synchrotron amplitude for grazing particles, which ju...<br/>[Phys. Rev. ST Accel. Beams 12, 114001] Published Mon Nov 02, 2009 Stephen G. Peggs and Valentina Previtali 2009-11-02T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.114001 Phys. Rev. ST Accel. Beams 12, 114001 text/html article Physical Review Special Topics - Accelerators and Beams 12 11 2009-11-02T00:00:00-05:00 114001 Single-Particle Dynamics Single-Particle Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.104401 Author(s): G. V. Stupakov and I. A. Kotelnikov<br/>We study an impedance due to coherent synchrotron radiation (CSR) generated by a short bunch of charged particles passing through a dipole magnet of finite length in a vacuum chamber of a given cross section. In our method we decompose the electromagnetic field of the beam over the eigenmodes of the...<br/>[Phys. Rev. ST Accel. Beams 12, 104401] Published Fri Oct 30, 2009 G. V. Stupakov and I. A. Kotelnikov 2009-10-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.104401 Phys. Rev. ST Accel. Beams 12, 104401 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-30T00:00:00-04:00 104401 Relativistic, Multiple-Particle Dynamics Relativistic, Multiple-Particle Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.102802 Author(s): Shaoheng Wang, J. C. Dooling, K. C. Harkay, R. L. Kustom, and G. E. McMichael<br/>The rapid cycling synchrotron of the intense pulsed neutron source at Argonne National Laboratory normally operates at an average beam current of 14 to 15  μA, accelerating protons from 50 to 450 MeV 30 times per second. The beam current is limited by a single-bunch vertical instability that o...<br/>[Phys. Rev. ST Accel. Beams 12, 102802] Published Tue Oct 27, 2009 Shaoheng Wang, J. C. Dooling, K. C. Harkay, R. L. Kustom, and G. E. McMichael 2009-10-27T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.102802 Phys. Rev. ST Accel. Beams 12, 102802 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-27T00:00:00-04:00 102802 Beam Control, Diagnostics, and Feedback Beam Control, Diagnostics, and Feedback http://link.aps.org/doi/10.1103/PhysRevSTAB.12.102401 Author(s): Nicholas Sammut, Luca Bottura, Guy Deferne, and Walter Venturini Delsolaro<br/>The Large Hadron Collider (LHC) at CERN is equipped with a feed-forward control system known as the field description for the LHC (FiDeL) which is designed to predict the magnetic field and its multipoles, hence reducing the burden on beam based feedback. FiDeL consists of a physical and empirical p...<br/>[Phys. Rev. ST Accel. Beams 12, 102401] Published Tue Oct 27, 2009 Nicholas Sammut, Luca Bottura, Guy Deferne, and Walter Venturini Delsolaro 2009-10-27T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.102401 Phys. Rev. ST Accel. Beams 12, 102401 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-27T00:00:00-04:00 102401 Magnet Calculations and Technology Magnet Calculations and Technology http://link.aps.org/doi/10.1103/PhysRevSTAB.12.102001 Author(s): A. Grudiev, S. Calatroni, and W. Wuensch<br/>A new local field quantity is presented which gives the high gradient performance limit of accelerating structures due to vacuum rf breakdown. The new field quantity, a modified Poynting vector S_{c} , is derived from a model of the breakdown trigger in which field emission currents from potential b...<br/>[Phys. Rev. ST Accel. Beams 12, 102001] Published Mon Oct 26, 2009 A. Grudiev, S. Calatroni, and W. Wuensch 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.102001 Phys. Rev. ST Accel. Beams 12, 102001 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-26T00:00:00-04:00 102001 Radio Frequency Calculations and Technology Radio Frequency Calculations and Technology http://link.aps.org/doi/10.1103/PhysRevSTAB.12.101302 Author(s): T. Plettner, R. L. Byer, C. McGuinness, and P. Hommelhoff<br/>We propose a dielectric photonic structure for ultrafast deflection and focusing of relativistic charged particle beams. The structure is designed to transform a free-space laser beam into a deflection force that acts on the free particles with the same optical phase over a distance of travel that i...<br/>[Phys. Rev. ST Accel. Beams 12, 101302] Published Mon Oct 26, 2009 T. Plettner, R. L. Byer, C. McGuinness, and P. Hommelhoff 2009-10-26T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.101302 Phys. Rev. ST Accel. Beams 12, 101302 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-26T00:00:00-04:00 101302 New Acceleration Techniques New Acceleration Techniques http://link.aps.org/doi/10.1103/PhysRevSTAB.12.101301 Author(s): S. Becker, P. B. Hilz, F. Grüner, and D. Habs<br/>Laser-plasma accelerators are expected to deliver electron bunches with high space charge fields. Several recent publications have addressed the impact of space charge effects on such bunches after the extraction into vacuum. Artifacts due to the approximation of retardation effects are addressed, w...<br/>[Phys. Rev. ST Accel. Beams 12, 101301] Published Thu Oct 22, 2009 S. Becker, P. B. Hilz, F. Grüner, and D. Habs 2009-10-22T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.101301 Phys. Rev. ST Accel. Beams 12, 101301 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-22T00:00:00-04:00 101301 New Acceleration Techniques New Acceleration Techniques http://link.aps.org/doi/10.1103/PhysRevSTAB.12.104202 Author(s): A. R. Rossi, A. Bacci, L. Serafini, C. Maroli, and V. Petrillo<br/>A form is given of the retarded electric field and magnetic induction generated by the motion of a charged particle that expresses these fields as integrals of the retarded charge density only, with kernels depending on the charge velocity and acceleration fields. In the case of a single pointlike c...<br/>[Phys. Rev. ST Accel. Beams 12, 104202] Published Tue Oct 20, 2009 A. R. Rossi, A. Bacci, L. Serafini, C. Maroli, and V. Petrillo 2009-10-20T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.104202 Phys. Rev. ST Accel. Beams 12, 104202 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-20T00:00:00-04:00 104202 Low-Energy, Multiple-Particle Dynamics Low-Energy, Multiple-Particle Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.102801 Author(s): S. Becker, M. Bussmann, S. Raith, M. Fuchs, R. Weingartner, P. Kunz, W. Lauth, U. Schramm, M. El Ghazaly, F. Grüner, H. Backe, and D. Habs<br/>The application of quadrupole devices with high field gradients and small apertures requires precise control over higher order multipole field components. We present a new scheme for performance control and tuning, which allows the illumination of most of the quadrupole device aperture because of th...<br/>[Phys. Rev. ST Accel. Beams 12, 102801] Published Mon Oct 19, 2009 S. Becker, M. Bussmann, S. Raith, M. Fuchs, R. Weingartner, P. Kunz, W. Lauth, U. Schramm, M. El Ghazaly, F. Grüner, H. Backe, and D. Habs 2009-10-19T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.102801 Phys. Rev. ST Accel. Beams 12, 102801 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-19T00:00:00-04:00 102801 Beam Control, Diagnostics, and Feedback Beam Control, Diagnostics, and Feedback http://link.aps.org/doi/10.1103/PhysRevSTAB.12.101002 Author(s): Yi-Peng Sun (孙一鹏), Ralph Assmann, Javier Barranco, Rogelio Tomás, Thomas Weiler, Frank Zimmermann, Rama Calaga, and Akio Morita (森田 昭夫)<br/>Modern colliders bring into collision a large number of bunches to achieve a high luminosity. The long-range beam-beam effects arising from parasitic encounters at such colliders are mitigated by introducing a crossing angle. Under these conditions, crab cavities (CC) can be used to restore effectiv...<br/>[Phys. Rev. ST Accel. Beams 12, 101002] Published Wed Oct 14, 2009 Yi-Peng Sun (孙一鹏), Ralph Assmann, Javier Barranco, Rogelio Tomás, Thomas Weiler, Frank Zimmermann, Rama Calaga, and Akio Morita (森田 昭夫) 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.101002 Phys. Rev. ST Accel. Beams 12, 101002 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-14T00:00:00-04:00 101002 High-Energy Accelerators and Colliders High-Energy Accelerators and Colliders http://link.aps.org/doi/10.1103/PhysRevSTAB.12.100702 Author(s): J. Qiang, R. D. Ryne, M. Venturini, A. A. Zholents, and I. V. Pogorelov<br/>In this paper we report on large-scale high resolution simulations of beam dynamics in electron linacs for the next-generation x-ray free electron lasers (FELs). We describe key features of a parallel macroparticle simulation code including three-dimensional (3D) space-charge effects, short-range st...<br/>[Phys. Rev. ST Accel. Beams 12, 100702] Published Wed Oct 14, 2009 J. Qiang, R. D. Ryne, M. Venturini, A. A. Zholents, and I. V. Pogorelov 2009-10-14T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.100702 Phys. Rev. ST Accel. Beams 12, 100702 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-14T00:00:00-04:00 100702 Synchrotron Radiation and Free-Electron Lasers Synchrotron Radiation and Free-Electron Lasers http://link.aps.org/doi/10.1103/PhysRevSTAB.12.101001 Author(s): G. S. Nusinovich, D. Kashyn, and T. M. Antonsen<br/>High-gradient accelerating structures should operate reliably for a long time. Therefore studies of various processes which may lead to disruption of such an operation are so important. In the present paper, the dissipation of rf electromagnetic energy in metallic microparticles is analyzed accounti...<br/>[Phys. Rev. ST Accel. Beams 12, 101001] Published Tue Oct 13, 2009 G. S. Nusinovich, D. Kashyn, and T. M. Antonsen 2009-10-13T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.101001 Phys. Rev. ST Accel. Beams 12, 101001 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-13T00:00:00-04:00 101001 High-Energy Accelerators and Colliders High-Energy Accelerators and Colliders http://link.aps.org/doi/10.1103/PhysRevSTAB.12.109901 Author(s): A. Burov<br/>[Phys. Rev. ST Accel. Beams 12, 109901] Published Mon Oct 12, 2009 A. Burov 2009-10-12T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.109901 Phys. Rev. ST Accel. Beams 12, 109901 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-12T00:00:00-04:00 109901 Errata Errata http://link.aps.org/doi/10.1103/PhysRevSTAB.12.104801 Author(s): Roger M. Jones<br/>The transverse wakefield excited by multiple bunches in ultrarelativistic charged particle beams in a linear collider must be adequately damped in order to preserve the luminosity of the colliding beams and to prevent a beam breakup instability developing. A review of the means of achieving this wak...<br/>[Phys. Rev. ST Accel. Beams 12, 104801] Published Thu Oct 08, 2009 Roger M. Jones 2009-10-08T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.104801 Phys. Rev. ST Accel. Beams 12, 104801 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-08T00:00:00-04:00 104801 Review Articles Review Articles http://link.aps.org/doi/10.1103/PhysRevSTAB.12.104201 Author(s): Alexander W. Chao<br/>Gravitational instability of the distribution of stars in a galaxy is a well-known phenomenon in astrophysics. This report is an attempt to analyze this phenomenon by applying standard tools developed in accelerator physics. It is found that a nonrotating galaxy would become unstable if its size exc...<br/>[Phys. Rev. ST Accel. Beams 12, 104201] Published Wed Oct 07, 2009 Alexander W. Chao 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.104201 Phys. Rev. ST Accel. Beams 12, 104201 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-07T00:00:00-04:00 104201 Low-Energy, Multiple-Particle Dynamics Low-Energy, Multiple-Particle Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.100701 Author(s): Vitaliy A. Goryashko, Kostyantyn Ilyenko, and Anatoliy Opanasenko<br/>We study the operation regime of a hybrid planar free-electron maser (FEM) amplifier near the magnetoresonant value of the uniform longitudinal (guide) magnetic field. Using analytical expressions for individual test electron trajectories and normal frequencies of their three-dimensional oscillation...<br/>[Phys. Rev. ST Accel. Beams 12, 100701] Published Wed Oct 07, 2009 Vitaliy A. Goryashko, Kostyantyn Ilyenko, and Anatoliy Opanasenko 2009-10-07T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.100701 Phys. Rev. ST Accel. Beams 12, 100701 text/html article Physical Review Special Topics - Accelerators and Beams 12 10 2009-10-07T00:00:00-04:00 100701 Synchrotron Radiation and Free-Electron Lasers Synchrotron Radiation and Free-Electron Lasers http://link.aps.org/doi/10.1103/PhysRevSTAB.12.090401 Author(s): Eduardo M. Waisman and M. E. Cuneo<br/>We extend the variational calculus technique for inductance minimization of constant gap axisymmetric transmission lines (TL), introduced by Hurricane [J. Appl. Phys. 95, 4503 (2004)], to the case in which the anode-cathode gap is a linear function of the midgap radius. The full analytic optimal mid...<br/>[Phys. Rev. ST Accel. Beams 12, 090401] Published Wed Sep 30, 2009 Eduardo M. Waisman and M. E. Cuneo 2009-09-30T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.090401 Phys. Rev. ST Accel. Beams 12, 090401 text/html article Physical Review Special Topics - Accelerators and Beams 12 9 2009-09-30T00:00:00-04:00 090401 Pulsed-Power Accelerators, Technology, and Dynamics Pulsed-Power Accelerators, Technology, and Dynamics http://link.aps.org/doi/10.1103/PhysRevSTAB.12.092001 Author(s): A. Descoeudres, Y. Levinsen, S. Calatroni, M. Taborelli, and W. Wuensch<br/>Breakdowns occurring in rf accelerating structures will limit the ultimate performance of future linear colliders such as the Compact Linear Collider (CLIC). Because of the similarity of many aspects of dc and rf breakdown, a dc breakdown study is underway at CERN to better understand the vacuum bre...<br/>[Phys. Rev. ST Accel. Beams 12, 092001] Published Tue Sep 29, 2009 A. Descoeudres, Y. Levinsen, S. Calatroni, M. Taborelli, and W. Wuensch 2009-09-29T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.092001 Phys. Rev. ST Accel. Beams 12, 092001 text/html article Physical Review Special Topics - Accelerators and Beams 12 9 2009-09-29T00:00:00-04:00 092001 Radio Frequency Calculations and Technology Radio Frequency Calculations and Technology http://link.aps.org/doi/10.1103/PhysRevSTAB.12.091002 Author(s): Y. Ohnishi, K. Ohmi, H. Koiso, M. Masuzawa, A. Morita, K. Mori, K. Oide, Y. Seimiya, and D. Zhou<br/>We have measured and corrected chromatic X-Y coupling at an interaction point to improve the luminosity of KEKB. We have measured the beam position of betatron oscillations induced by the kicker using turn-by-turn beam position monitors. A phase space structure reconstructed by the beam position pro...<br/>[Phys. Rev. ST Accel. Beams 12, 091002] Published Mon Sep 28, 2009 Y. Ohnishi, K. Ohmi, H. Koiso, M. Masuzawa, A. Morita, K. Mori, K. Oide, Y. Seimiya, and D. Zhou 2009-09-28T00:00:00-04:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevSTAB.12.091002 Phys. Rev. ST Accel. Beams 12, 091002 text/html article Physical Review Special Topics - Accelerators and Beams 12 9 2009-09-28T00:00:00-04:00 091002 High-Energy Accelerators and Colliders High-Energy Accelerators and Colliders