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| TUMPMP03 |
BEAM DYNAMICS STUDIES FOR THE HIGH-ENERGY STORAGE RING
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electron, luminosity, target, injection |
96 |
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- A. Lehrach, B. Lorentz, R. Maier, D. Prasuhn, H. Stockhorst, R. Tölle, D. M. Welsch
FZJ, Jülich
- O. Boine-Frankenheim, R. W. Hasse, S. Sorge
GSI, Darmstadt
- F. Hinterberger
Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, Bonn
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Funding: INTAS grant No. 03-54-5584 (Advanced Beam Dynamics for Storage Rings), EU-FP6 FP6 contract No. 515873(DIRAC Secondary-Beams)
The HESR is planned as an antiproton storage ring in the momentum range from 1.5 to 15 GeV/c. An important feature of this new facility is the combination of phase space cooled beams utilizing electron and stochastic cooling and dense internal targets (e.g. pellet targets). In this paper different beam dynamics issues like closed orbit correction, performance of cooled beams interacting with internal targets and luminosity considerations are discussed in respect of utilized simulation codes.
O. Boine-Frankenheim et al., Nucl. Inst. and Meth. A 560, 245 (2006).
A. Lehrach at al., Nucl. Instr. Meth. A 561, 289 (2006).
F. Hinterberger, Jül-Report No. 4206 (2006), ISSN 0944-2952.
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| TUPPP05 |
A Space Charge Algorithm for the Bunches of Elliptical Cross Section with Arbitrary Beam Size and Particle Distribution
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space-charge, beam-losses, linac, controls |
106 |
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- A. Orzhekhovskaya, G. Franchetti
GSI, Darmstadt
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Algorithms of analytical and semi-analytical calculation of the electric field for the bunches of variable elliptical cross section are proposed. An arbitrary space charge distribution is fitted on the interval of consideration by the polynom of optimal order. In the case of an axisymmetric 3D ellipsoidal bunch or an arbitrary 2D elliptic cross section of the bunch the analytic solution is derived. For the bunch of variable elliptical cross section proposed method is developed to a numerical method using longitudinal grid. Tests of the field computation show high accuracy of the calculations and good agreement of the algorithms with the general theory. The methods are applied to the space charge modeling for the GSI project "Facility for Antiproton and Ion Research at Darmstadt" (FAIR), where particle loss must be calculated during long term storage, and to the code benchmarking in frame of the project "High Intensity Pulsed Proton Injector" (HIPPI).
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| WEPPP15 |
Simulations of Pellet Target Effects with Program PETAG01
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target, electron, simulation, storage-ring |
216 |
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- A. Dolinskii, V. Gostishchev, M. Steck
GSI, Darmstadt
- O. A. Bezshyyko
National Taras Shevchenko University of Kyiv, The Faculty of Physics, Kyiv
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New internal targets play an important role in modern nuclear and high energy physics research. One of such targets is a pellet target which is a variant of a micro-particle internal target. This target has a number of very attractive features when it used in a storage ring. The software package PETAG01 has been developed for modelling the pellet target and it can be used for numerical calculations of the interaction of a circulating beam with the target in a storage ring. We present numerical calculations to study the beam dynamics of the ions in the storage ring, where strong cooling techniques in combination with the pellet target are applied. Some important effects due to the target in combination with electron cooling and its influence on the beam parameters have been considered.
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| WEA2IS03 |
The Fermilab Accelerator Control System
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controls, collider, target, instrumentation |
246 |
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- J. F. Patrick
Fermilab, Batavia, Illinois
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The Fermilab accelerator complex supports simultaneous operation of 8 and 120 GeV fixed target lines, a high intensity neutrino source (NUMI), antiproton production, and a 1.8 TeV proton-antiproton collider. Controlling all this is a single system known as ACNET. ACNET is based on a three tier architecture featuring a high degree of scalability, large scale parallel data logging, security, accountability, a states facility, a sequencer for automated operation. In recent years the system has been enhanced to support the demands of the current run, and also modified to reduce dependence in the upper layers on the obsolete VAX/VMS platform. A Java based infrastruture has been developed, and is now used for most middle layer functionality as well as some applications. A port of most of the remaining VMS code to Linux is nearing completion. This migration has been accomplished with minimal interruption to operations.
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