Codes for Ion Linac Study
Image-based Codes for Study of Ion Linac Physics
Tech Area / Field
- INF-SOF/Software/Information and Communications
8 Project completed
Senior Project Manager
Lapidus O V
MRTI (Radio Techniques), Russia, Moscow
- ITEF (ITEP), Russia, Moscow
- CEA / DSM / SPT/CEN Saclay, France, Saclay\nJohann Wolfgang Goethe Universität / Institut für Angewandte Physic, Germany, Frankfurt\nCERN, Switzerland, Geneva
Project summaryStarting from July 1995 the works on the Imaged-Based Code (IBC)-package SUPERLINAC are carried out under the frame of 1STC Project #147. Financing Parties: European Community and Japan. This package is generated for a high-current high-energy ion linac designing using IBC-technology. SUPERLINAC can be used for linac accelerating/focusing channel calculation as well as for decreasing of linac cost and radiation level. The main results are described in 1STC-MRTI report [1, see Annex] and in 9 reports on different accelerator conferences [2-10, see Annex].
In the present proposal IBC-possibilities are developed. It is suggested to use ШС not only for ion linac best version selection but also for accelerator physics study (essentially for space charge-dominated beam study) ЮС can be easily adapted and used as codes for education and training.
The proposal provides for IBC development in three directions:
- Space Charge-Dominated (SCD) Beam Physics Study
- Best Version Selection under Different Criteria of Optimization
- Codes for Education and Training.
The section devoted to SCD physics study is a radical departure from conventional practice. It is of fundamental importance. In this section 1BC are used for SCD-physics scientific visualization. An user will be obtained not only by full volume of traditional physical information (about particle phase and radial trajectories, variations of phase portraits, rms emittance and so on) but also information about kinetic and potential energies redistribution, core-halo formation, a particle trajectory on the beam dynamics background.
The full volume of physical information expressed in a form convenient for analysis offers a clearer view of SCD-physics mechanisms and helps to select linac parameters based on SCD-beam knowledge. IBC helps to find:
a) main mechanisms of core-halo formation.
b) main regularities of SCD-beam bunching.
c) main regularities of SCD-beam matching.
d) beam mismatching influence on emittance growth.
f) influence of external field random perturbations on SCD-beam parameters
A large scope of activities yet to be studied on optimal selection of the best linac version. An optimization criterion may be different in each case. In the case of super-linac for accelerator-driven transmutation technologies and applications the criterion of radiation purity (minimum of lost particles) can be considered as an optimization one. The minimum of linac cost, project duration, technical risks and so on can be considered as linac optimization criterion for industry and medical applications. Accelerator performance prediction, trade-off studies of competing designs and reduced technical risk in hardware design and operation will be the benefits of these investigations, helps the designer to find the region of linac parameter space most likely to satisfy his design requirements. The process is fast because the beam simulation is used only for final linac version. IBC gives an user intellectual advises and helps him to come to the best linac version by the shortest way.
IBC can be easily adapted as codes for education and training. In the present proposal it is suggested that all parts of SUPERLINAC will be provided with corresponding text insert and demo examples in order to receive unique codes for education and training: LEBT.Teacher, RFQ.Teacher, HILBILAC.Teacher, DTL.Teacher, HBL.Teacher and so on.
The large part of the proposed project will be devoted to different optimization criteria using for IBC-package generation. Such computer code packages are unique in world practice. In particular, criterion of radiation purity will be considered by examples of RFQ section with 100 mA as CW current for transmutation technology, of linac with energy 1 GeV and CW current 100 - 250 mA for transmutation technology and of superconducting linac with energy 1 GeV and CW current 10-30 mA for transmutation technology. Criterion of Maximal Economical Efficiency and Reliability will be considered by examples of proton linac for boron-neutron therapy of a proton linac for isotope production.
Potential Role of Foreign Collaborators
For join work in the frame of future project American collaborators select a cooperation on IBC generation for SCO-beam physics visualization and on a designing CW deuteron linac for '4he first wall problem". European collaborators are needed in good-quality codes for correct calculations and reliable particle simulation as well as in codes for SCD-beam physics visualization. They select IBC codes as base for research on beam transport channel. RFQ and DTL channels. Japan collaborators are scheduled the IBC testing by use their own experimental devices.
The Project Team invites all potential Collaborators to take part in work on the development and use, by professionals and for training, of advanced beam dynamics simulation codes for particle accelerator design. Three aspects are proposed for cooperate investigations: space-charge-dominated beam physics study, design optimization using powerful optimization techniques, and packaging of the codes for education and training.
List of the Most Recent References
1. "SUPERL1NAC.Advisor. Image-based Codes for Ion Beam Optimization and Simulation". MRTI-1STC Project N 147. The First Annual Report. Moscow 1996.
2. "Space Charge-Dominated Beam Bunching", by Boris l.Bondarev, Alexander P.Durkin. Moscow Radiotechnical Institute, Robert A. Jameson Los Alamos National Laboratory, Report on Second International Conference on Accelerator-Driven Technologies and Applications (Kalmar, Sweden, June 1996).
3. "Superconducting Devices Use in High-Current Linear Accelerators for Energy Purposes", by G.l.Batskikh, A.P.Fedotov, Yu.D.Ivanov, V.A.Konovalov, B.P.Murin, I.V.Shumakov, N.I.Uksusov, Moscow Radiotechnical Institute Report on Second International Conference on Accelerator-Driven Technologies and Applications (Kalmar, Sweden, June 1996)
4. "Space Charge-Dominated Beam Research", by Boris 1. Bondarev, Alexander P. Durkin, Moscow Radiotechnical Institute, Robert A. Jameson. Los Alamos National Laboratory. Report on International Workshop Beam Dynamics & Optimization-96 (St. Petersburg, Russia, July 19 %)
5. "Ion Linacs Design with Superconductivity Use" by B.P.Murin, G.l.Batskikh, V.M.Belugin, B.I.Bondarev, A.P.Fedotov, V.A.Konovalov, Moscow Radiotechnical Institute, Russia Linac96 Conference Abstract (Geneva, August 1996)
6. "Intense Ion Beam Transport and Space Charge Redistribution", by B.I.Bondarev, A.P.Durkin, B.P.Murin, Moscow Radiotechnical Institute, Linac96 Conference Abstract (Geneva, August 1996)
7. "Regotron as CW High-Power RF Source for Ion Linac", by I.V.Shumakov, B.P.Murin, B.I.Bondarev, A-P.Durkin, Moscow Radiotechnical Institute, Linac96 Conference Abstract (Geneva, August 1996)
8. "Study of Space Charge-Dominated Beam Bunching" by A.P.Durkin, B.I.Bondarev, B.P.Murin, Moscow Radiotechnical Institute. Linac96 Conference Abstract (Geneva, August 19%)
9. "Multilevel Codes RFQ.3L for RFQ Designing" by Boris Bondarev, Alexander Durkin, Stanislav Vinogradov, Moscow Radiotechnical Institute, Abstract on 1996 Computational Accelerator Physics Conference (Virginia, USA, September 19%)
10. "Space Charge-Dominated Beam Main Regularities in Beginning Part of High-Current Proton Linac", by Boris Bondarev and Alexander Durkin, Moscow Radiotechnical Institute, Abstract on 1996
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