Paper |
Title |
Other Keywords |
Page |
WEPSB033 |
Focusing of Charged Particles by Magnetic Dipoles |
dipole, focusing, quadrupole, betatron |
431 |
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- G.V. Dolbilov
JINR, Dubna, Moscow Region, Russia
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The possibility of using magnetic dipoles for tight focusing of charged particles is discussed. Plane-parallel geometry of the magnetic poles of the dipoles greatly simplifies lens design and reduces the cost of creating a focusing system. Focusing is performed using gradient pulses of force of the magnetic dipoles.
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THPSC002 |
Use of Structural-Variational Method of R-functions in Mathematical Modeling of Magnetic Systems |
vacuum, experiment |
538 |
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- O.I. Zaverukha, M.V. Sidorov
NURE, Kharkov, Ukraine
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Magnetic systems are widespread in nature and technic. For example, they are the component of accelerator and spectrometer facilities, stabilization systems of artificial satellites etc. Nowadays the most often used methods for numerical analysis of magnetic systems are methods of finite differences, finite elements, boundary integral elements etc. The main disadvantage of these methods is the necessity to generate and adjust the computational grid for each unique area. The R-function method, proposed by Ukrainian academic of National academy of science V.L.Rvachev, can be an alternative to existing methods for magnetic systems calculation. This method allows to build so called "solution structures" - bundle of functions that exactly meets the boundary value problems. Method treats the geometry exactly as well. The use of R-function method to calculate magnetic field in spectrometric magnet SP-40 is observed. Solution structure that takes into account the geometry of the area occupied by magnetic system, meets all boundary conditions, including matched conditions on the "ferromagnetic-vacuum" edge is build for this problem. Approximation of the indefinite component of the solution structure is proposed to calculate using Galerkin method.
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THPSC014 |
Fast Kicker for High Current Electron Beam Manipulation in Large Aperture |
kicker, controls, simulation, software |
569 |
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- V.V. Gambaryan, A.A. Starostenko
BINP SB RAS, Novosibirsk, Russia
- A.A. Starostenko
NSU, Novosibirsk, Russia
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Pulsed deflecting magnet (kicker) project was worked out in BINP (Budker Institute of Nuclear Physics). The kicker design task is: impulsive force value is 1 mT*m, pulse edge is 5 ns, and impulse duration is about 200 ns. The unconventional approach is for plates to be substituted by a set of cylinders. Obtained magnet construction allows controlling field homogeneity by changing currents magnitudes in cylinders. Furthermore we demonstrated the method of field optimization. In addition the harmonic components measurement technique was considered and the possibility to control harmonic components value was shown.
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Poster THPSC014 [2.155 MB]
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THPSC081 |
VME Based Digitizers for Waveform Monitoring System of Linear Induction Accelerator LIA-20 |
monitoring, controls, timing, hardware |
721 |
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- E.S. Kotov, A.M. Batrakov, G.A. Fatkin, A.V. Pavlenko, K.S. Shtro, M.Yu. Vasilyev
BINP SB RAS, Novosibirsk, Russia
- G.A. Fatkin, E.S. Kotov, A.V. Pavlenko, M.Yu. Vasilyev
NSU, Novosibirsk, Russia
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The Linear Induction Accelerator LIA-20 is being created at the Budker Institute of Nuclear Physics. Waveform monitoring system (WMS) is an important part of LIA-20 control system. WMS includes "slow" and "fast" monitoring subsystems. Three kinds of digitizers have been developed for WMS. "Slow" subsystem is based on ADCx32. This digitizer uses four 8 channel multiplexed SAR ADCs (8 us conversion cycle) with 12-bit resolution. Main feature of this module is program configurable channel sequencing, which allows to measure signals with different timing characteristics. Two types of digitizers are involved in "fast" subsystem. The first one, ADC4x250-4CH, is 4-channel 250 MSPS digitizer. The second one, ADC4x250-1CH, is single channel digitizer with sample rate of 1 GSPS. Resolution of both devices is 12 bit. "Fast" modules are based on the common hardware. This paper describes hardware and software architecture of these modules.
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Poster THPSC081 [1.072 MB]
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THPSC088 |
Software and Computational Infrastructure of LIA-20 Control System |
controls, software, TANGO, hardware |
739 |
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- A.I. Senchenko, G.A. Fatkin, P.A. Selivanov, S.S. Serednyakov
BINP SB RAS, Novosibirsk, Russia
- G.A. Fatkin, A.I. Senchenko, S.S. Serednyakov
NSU, Novosibirsk, Russia
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The linear induction accelerator LIAÂ20 for radiography is currently under construction at Budker Institute of Nuclear Physics. This paper presents software architecture and computational infrastructure for the accelerator controls. System and application software are described. Linux operating system is used on PC and embedded controllers. Application software is based on TANGO. Overall data transfer rate estimations are provided.
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Poster THPSC088 [2.252 MB]
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