Paper |
Title |
Page |
MOPC123 |
Lattice Study for the Carbon Ion Synchrotron forTherapy with Electron Cooling
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355 |
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- S. V. Sinyatkin, V. A. Kiselev, E. B. Levichev, V. V. Parkhomchuk, V. B. Reva, V. A. Vostrikov
BINP SB RAS, Novosibirsk
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In this paper the preliminary design of magnet lattice of the Carbon Ion Therapy Facility with electron cooling is described. The influence of misalignments of magnetic elements on ring parameters and the layout of orbit correction are estimated. The different methods of ion extractions from the synchrotron are considered, i.e., the pellet extraction, recombination extraction and the extraction on the sextupole resonance.
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TUOBG02 |
Study of Beam Dynamics During the Crossing of Resonances in the VEPP-4M Storage Ring
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965 |
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- P. A. Piminov, V. A. Kiselev, E. B. Levichev, O. I. Meshkov, S. A. Nikitin
BINP SB RAS, Novosibirsk
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The influence of resonances on the beam dynamics in the storage rings is of a substantial interest for the accelerator physics. For example, a fast crossing of resonances occurs in the damping rings of future linear colliders during the beam damping due to the coherent shift that can result in a loss of particles. We have studied experimentally the crossing of resonances of different power nearby the working point of the VEPP-4M storage ring. The observation of the beam sizes and particle losses has been done with a single-turn time resolution. The comparison with the numerical simulation has been made.
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Slides
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WEPC117 |
Influence of Insertion Devices on the ALBA Dynamic Aperture
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2279 |
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- E. B. Levichev, P. A. Piminov
BINP SB RAS, Novosibirsk
- D. Einfeld
ALBA, Bellaterra
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Insertion devices can produce effects reducing the dynamic aperture in a storage ring. To study these effects for the ALBA light source the following insertion devices were inserted in the ALBA lattice: a superconducting wiggler SC-W31 with 31-mm-period and 2.1-T-field amplitude, and two Apple-II type PMM NdFeB undulators with periods of 62 mm (HU62) and 71 mm (HU71). Results of numerical study of the nonlinear beam dynamics by a 6D computer code are presented.
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WEPP040 |
New Low Emittance Lattices for the SuperB Accelerator Project
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2608 |
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- M. E. Biagini, M. Boscolo, P. Raimondi, S. Tomassini, M. Zobov
INFN/LNF, Frascati (Roma)
- S. Bettoni
CERN, Geneva
- A. Bogomyagkov, I. Koop, E. B. Levichev, S. A. Nikitin, P. A. Piminov, D. N. Shatilov
BINP SB RAS, Novosibirsk
- E. Paoloni
University of Pisa and INFN, Pisa
- J. Seeman, M. K. Sullivan, U. Wienands, W. Wittmer
SLAC, Menlo Park, California
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New low emittance lattices (1.6 nm at 7 GeV, 2.8 nm at 4 GeV) have been designed for the asymmetric SuperB accelerator aiming at a luminosity of 1036 cm-2 s-1. Main optics features are two alternating arc cells with different horizontal phase advance, in order to decrease beam emittance and allow at the same time for easy chromaticity correction in the arcs. Emittance can be further reduced by a factor of two for luminosity upgrade. New beam parameters have been chosen to fulfill the transparency conditions for 4x7 GeV beams, different from the asymmetric currents used in operating B-Factories. Beam polarization schemes have been studied and will be implemented in the lattice.
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WEPP046 |
Final Focus for the Crab-waist Tau-charm Factory
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2623 |
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- I. N. Okunev
BINP, Novosibirsk
- A. Bogomyagkov, E. B. Levichev, P. A. Piminov, S. V. Sinyatkin, P. Vobly
BINP SB RAS, Novosibirsk
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In the crab-waist colliders design of the final focus region is a matter of primary importance. The paper describes analysis of final focus quadrupole design and results of particles tracking through the quadrupoles.
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WEXG02 |
Crabbed Waist Collisions in DAΦNE and Super-B Design
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1898 |
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- P. Raimondi, D. Alesini, M. E. Biagini, C. Biscari, R. Boni, M. Boscolo, F. Bossi, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, E. Di Pasquale, G. Di Pirro, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, C. Ligi, F. Marcellini, G. Mazzitelli, C. Milardi, F. Murtas, L. Pellegrino, M. A. Preger, L. Quintieri, R. Ricci, U. Rotundo, C. Sanelli, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, S. Tomassini, C. Vaccarezza, M. Zobov
INFN/LNF, Frascati (Roma)
- N. Arnaud, D. Breton, P. Roudeau, A. Stocchi, V. Variola, B. F. Viaud
LAL, Orsay
- S. Bettoni
CERN, Geneva
- P. Branchini
roma3, Rome
- M. Esposito
Rome University La Sapienza, Roma
- I. Koop, E. B. Levichev, P. A. Piminov, D. N. Shatilov, V. V. Smaluk
BINP SB RAS, Novosibirsk
- K. Ohmi
KEK, Ibaraki
- E. Paoloni
University of Pisa and INFN, Pisa
- M. Schioppa
INFN Gruppo di Cosenza, Arcavacata di Rende (Cosenza)
- D. Teytelman
SLAC, Menlo Park, California
- P. Valente
INFN-Roma, Roma
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The new idea of increasing the luminosity of a collider with crabbed waist collisions and first experimental results from DAΦNE using this concept are presented. Consequences for the design of future factories will be discussed. An outlook to the performance reach with crabbed waist collisions is given, with emphasis on future B Factories.
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Slides
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WEPP036 |
DAΦNE Setup and Operation with the Crab-Waist Collision Scheme
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2599 |
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- C. Milardi, D. Alesini, M. E. Biagini, C. Biscari, R. Boni, M. Boscolo, F. Bossi, B. Buonomo, A. Clozza, G. O. Delle Monache, T. Demma, E. Di Pasquale, G. Di Pirro, A. Drago, A. Gallo, A. Ghigo, S. Guiducci, C. Ligi, F. Marcellini, G. Mazzitelli, F. Murtas, L. Pellegrino, M. A. Preger, L. Quintieri, P. Raimondi, R. Ricci, U. Rotundo, C. Sanelli, M. Serio, F. Sgamma, B. Spataro, A. Stecchi, A. Stella, S. Tomassini, C. Vaccarezza, M. Zobov
INFN/LNF, Frascati (Roma)
- N. Arnaud, D. Breton, P. Roudeau, A. Stocchi, V. Variola, B. F. Viaud
LAL, Orsay
- S. Bettoni
CERN, Geneva
- P. Branchini
roma3, Rome
- M. Esposito
Rome University La Sapienza, Roma
- I. Koop, E. B. Levichev, P. A. Piminov, D. N. Shatilov
BINP SB RAS, Novosibirsk
- K. Ohmi
KEK, Ibaraki
- E. Paoloni
University of Pisa and INFN, Pisa
- M. Schioppa
INFN Gruppo di Cosenza, Arcavacata di Rende (Cosenza)
- V. V. Smaluk
BINP, Novosibirsk
- P. Valente
INFN-Roma, Roma
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In the second half of 2007 a major upgrade has been implemented on the Frascati DAΦNE collider in order to test the novel idea of Crab Waist collisions. New vacuum chambers and permanent quadrupole magnets have been designed, fabricated and installed to realize the new configuration. At the same time the performances of relevant hardware components, such as fast injection kickers and shielded bellows have been improved relying on new design concepts. The collider has been successfully commissioned in this new configuration. The paper describes the new layout as well as several experimental results about linear and non-linear optics setup and optimization, damping of beam instabilities and discusses the obtained luminosity performances.
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WEPP039 |
Design of a 1036 cm-2 s-1 Super-B Factory
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2605 |
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- J. Seeman, K. J. Bertsche, A. Novokhatski, M. K. Sullivan, U. Wienands, W. Wittmer
SLAC, Menlo Park, California
- S. Bettoni
CERN, Geneva
- M. E. Biagini, R. Boni, M. Boscolo, T. Demma, A. Drago, S. Guiducci, P. Raimondi, S. Tomassini, M. Zobov
INFN/LNF, Frascati (Roma)
- A. Bogomyagkov, I. Koop, E. B. Levichev, S. A. Nikitin, P. A. Piminov, D. N. Shatilov
BINP SB RAS, Novosibirsk
- G. Marchiori
INFN-Pisa, Pisa
- E. Paoloni
University of Pisa and INFN, Pisa
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Submitted for the High Luminosity Study Group for an Asymmetric Super-B-Factory: Parameters are being studied for a high luminosity e+e- collider operating at the Upsilon 4S that would deliver a luminosity of 1 to 2 x 1036/cm2/s. This collider would use a novel combination of linear collider and storage ring techniques. In this scheme an electron beam and a positron beam are stored in low-emittance damping rings similar to those designed for a Linear Collider (LC) or the next generation light source. A LC style interaction region is included in the ring to produce sub-millimeter vertical beta functions at the collision point. A large crossing angle (±25 mrad) is used at the collision point to allow beam separation. A crab-waist scheme is used to reduce the hourglass effect and restore peak luminosity. Beam currents of about 1.8 A in 1400 bunches can produce a luminosity of 1036/cm2/s with upgrade possibilities. Design parameters and beam dynamics effects are discussed.
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THPC067 |
ALBA Dynamic Aperture Optimization
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3140 |
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- P. A. Piminov, E. B. Levichev
BINP SB RAS, Novosibirsk
- D. Einfeld
ALBA, Bellaterra
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The lattice of ALBA, the 3 GeV synchrotron light source in Spain, provides extremely low emittance of the beam. It is known that such lattices require strong sextupole magnets to compensate natural chromaticities. The paper describes strategy and results of the ALBA dynamic aperture optimization including both tune point selecting and sextupoles arrangement to increase the DA size.
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THPC068 |
Effect of Magnetic Multipoles on the ALBA Dynamic
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3143 |
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- P. A. Piminov, E. B. Levichev
BINP SB RAS, Novosibirsk
- D. Einfeld
ALBA, Bellaterra
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For modern synchrotron light sources the main limitation of dynamic aperture is due to the strong chromatic sextupoles. However, small multipole errors in magnetic elements can reduce the original dynamic aperture by generating high order resonances at the aperture boundary. For the ALBA synchrotron light source a dynamic aperture in the presence of magnetic multipoles in the main magnets was simulated by tracking code. Both systematic and random magnetic errors were taken into account. In this paper we report on the results of our considerations.
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THPC080 |
The VEPP-4M Dynamic Aperture Determination with Beam-beam Effects
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3170 |
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- A. N. Zhuravlev, V. A. Kiselev, E. B. Levichev, O. I. Meshkov, P. A. Piminov, D. N. Shatilov, V. V. Smaluk
BINP SB RAS, Novosibirsk
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To determine experimentally the particle stable area under the influence of beam-beam effects in the electron-positron collider VEPP-4M we measure the beam lifetime with high accuracy as a function of moving aperture. The measurement is performed by a photodiode installed in the collider diagnostic beam line. The experimental setup and the measurement results are described. Comparison with the tracking simulation is presented.
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