ICAP2012 - List of Keywords (storage-ring)

Paper	Title	Other Keywords	Page
MOAAI1	Project Overview and Computational Needs to Measure Electric Dipole Moments at Storage Rings	simulation, dipole, proton, synchrotron	7
	A. Lehrach FZJ, Jülich, Germany
	The discovery of a non-zero EDM (Electric Dipole Moment) would be a signal for “new physics” beyond the standard model. EDM experiments with charged particles are only possible at storage rings. As a first step towards EDM searches in storage rings we proposed R&D work to be carried out at the Cooler Synchrotron COSY, then perform a first direct EDM measurement of a charged particle in a storage ring at COSY and on a longer time scale construct a dedicated storage ring. Full spin-tracking simulations of the entire experiment are absolutely crucial to explore the feasibility of the planned experiments. It is planned to use the COSY-INFINITY code and its updates to include higher-order nonlinearities, normal form analysis, symplectic tracking and especially spin tracking upon incorporation of RF-E/B spin flippers into the code. Adding the spin degree of freedom substantially enhances the need for the computing power. In order to study subtle effects and simulate particle and spin dynamics during the storage and build-up of the EDM signal, one needs custom-tailored fast trackers capable of following up to 100 billion turns for samples of up to 10⁶ particles.
	Slides MOAAI1 [3.341 MB]

MOSBC3	An Implementation of the Virtual Accelerator in the Tango Control System	controls, lattice, simulation, diagnostics	23
	P.P. Goryl, A.I. Wawrzyniak Solaris, Kraków, Poland M. Sjöström MAX-lab, Lund, Sweden T. Szymocha Cyfronet, Kraków, Poland
	Funding: Work supported by the European Regional Development Fund within the frame of the Innovative Economy Operational Program: POIG.02.01.00-12-213/09 Integration of simulating codes into the control system gives a possibility to improve machine operation. Providing tools for making computations directly within the control system and letting exchange data between the control system and models is a way of simplifying the whole process of calculating and applying machine's operational parameters as well as keeping track of them. In addition, having so-called an on-line model could be useful for system diagnostic and faults detection, especially when the objective approach is considered. The concept of the Virtual Accelerator will be presented as well as its implementation for the Tango control system as it is planned to be used for both facilities: the Solaris in Kraków, Poland and the MAX IV in Lund, Sweden. This includes the ModelServer tango device, the simplified C/C++ Tango API to be used with codes like Tracy and the tango2elegant script providing easy solution for integrating the Elegant tool with the Tango.
	Slides MOSBC3 [2.232 MB]

TUABC2	Global Optimization of the ANKA Lattice Using Multiobjective Genetic Algorithms (MOGA)	emittance, optics, quadrupole, lattice	72
	M. Streichert, N. Hiller, E. Huttel, V. Judin, B. Kehrer, M. Klein, S. Marsching, C.A.J. Meuter, A.-S. Müller, M.J. Nasse, M. Schuh, N.J. Smale KIT, Karlsruhe, Germany
	Funding: This work has been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320. The optimization of a storage ring lattice is a multiobjective problem, since the parameter space of possible solutions can be very large and a high number of constraints have to be taken into account during the optimization process. In this paper we used Genetic Algorithms (GA) and MultiObjective Genetic Algorithms (MOGA), which can solve such problems very efficiently and rapidly, to find the optimized settings for the ANKA storage ring lattice.

TUADI1	Storage Ring EDM Simulation: Methods and Results	simulation, lattice, factory, proton	99
	Y. Senichev, A. Lehrach, R. Maier, D. Zyuzin FZJ, Jülich, Germany S.N. Andrianov, A.N. Ivanov St. Petersburg State University, St. Petersburg, Russia M. Berz, K. Makino MSU, East Lansing, Michigan, USA
	The idea of Electric Dipole Moment search using the electrostatic storage ring with polarized beam is based on accumulation of additional tiny spin rotation, about one-billionth of radians per second, occurred only in the presence of EDM. This method can be realized under condition of the long-time spin coherency ~1000 seconds. During this time each particle performs about 109 turns in ring moving on different trajectories. At such conditions the spin-rotation aberrations associated with various types of space and time dependent nonlinearities start playing a crucial role. To design such a ring the computer simulation is necessary taking into account all factors affecting the spin. We used COSY-Infinity and integrating program with symplectic Runge-Kutta methods in composition with analytic methods. We developed a new lattice based on the alternating spin rotating. As a result, we can achieve the SCT of ~5000 seconds. The difficulties of these studies are still in the fact that the aberrations growth is observed in the scale of 109 turns and few million particles. For this simulation we use a supercomputer with parallel computing process.
	Slides TUADI1 [0.951 MB]

WEP06	Particle Tracking in Electrostatic Fields with Energy Conservation	simulation, controls, quadrupole, lattice	149
	A.N. Ivanov St. Petersburg State University, St. Petersburg, Russia
	The key idea of the research is to consider spin dynamics in electrostatic fields. Due to the fact, that spin rotation frequency explicitly depends on velocity of the particle and its kinetic energy is changed in electrostatic fields it is important to use some technique that provides both conservation energy and symplicticity condition. An appropriate mathematical model is described and the results of numerical calculation are shown. In conclusion, fringe fields influence is examined and compared with case of ideal fields.

WEACC3	Matrix Formalism for Long-term Evolution of Charged Particle and Spin Dynamics in Electrostatic Fields	lattice, simulation, quadrupole, dipole	187
	A.N. Ivanov, S.N. Andrianov St. Petersburg State University, St. Petersburg, Russia
	The matrix formalism as a numerical approach for solving of ODE equations is considered. It is a map method and has several advantages over classical step-by-step integration methods. This approach allows to present the solution as set of numerical matrices. A complete derivation of the equations this method is based on will be shown. Problems of symplectification and computing performance are discussed. We have developed an application that provides a tool for differential equations solving. The developed program allows to generate the final programming codes on C++, Fortran, MATLAB, C#, Java languages. The given approach is applied to long-term evolution of charged particle and spin dynamics in electrostatic fields.
	Slides WEACC3 [1.441 MB]

THP09	Global Scan of All Stable Settings (GLASS) for the ANKA Storage Ring	emittance, optics, quadrupole, dynamic-aperture	239
	M. Streichert, N. Hiller, E. Huttel, V. Judin, B. Kehrer, M. Klein, S. Marsching, C.A.J. Meuter, A.-S. Müller, M.J. Nasse, M. Schuh, N.J. Smale KIT, Karlsruhe, Germany
	Funding: This work has been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320. The design of an optimal magnetic optics for a storage ring is not a simple optimization problem, since numerous objectives have to be considered. For instance, figures of merit could be tune values, optical functions, momentum compaction factor, emittance, etc. There is a technique called “GLobal scan of All Stable Settings” (GLASS), which provides a systematic analysis of the magnetic optics and gives a global overview of the capabilities of the storage ring. We developed a parallel version of GLASS, which can run on multi-core processors, decreasing significantly the computational time. In this paper we present our GLASS implementation and show results for the ANKA lattice.

Paper

Title

Other Keywords

Page

MOAAI1

Project Overview and Computational Needs to Measure Electric Dipole Moments at Storage Rings

simulation, dipole, proton, synchrotron

7

A. Lehrach
FZJ, Jülich, Germany

The discovery of a non-zero EDM (Electric Dipole Moment) would be a signal for “new physics” beyond the standard model. EDM experiments with charged particles are only possible at storage rings. As a first step towards EDM searches in storage rings we proposed R&D work to be carried out at the Cooler Synchrotron COSY, then perform a first direct EDM measurement of a charged particle in a storage ring at COSY and on a longer time scale construct a dedicated storage ring. Full spin-tracking simulations of the entire experiment are absolutely crucial to explore the feasibility of the planned experiments. It is planned to use the COSY-INFINITY code and its updates to include higher-order nonlinearities, normal form analysis, symplectic tracking and especially spin tracking upon incorporation of RF-E/B spin flippers into the code. Adding the spin degree of freedom substantially enhances the need for the computing power. In order to study subtle effects and simulate particle and spin dynamics during the storage and build-up of the EDM signal, one needs custom-tailored fast trackers capable of following up to 100 billion turns for samples of up to 10⁶ particles.

Slides MOAAI1 [3.341 MB]

MOSBC3

An Implementation of the Virtual Accelerator in the Tango Control System

controls, lattice, simulation, diagnostics

23

P.P. Goryl, A.I. Wawrzyniak
Solaris, Kraków, Poland
M. Sjöström
MAX-lab, Lund, Sweden
T. Szymocha
Cyfronet, Kraków, Poland

Funding: Work supported by the European Regional Development Fund within the frame of the Innovative Economy Operational Program: POIG.02.01.00-12-213/09
Integration of simulating codes into the control system gives a possibility to improve machine operation. Providing tools for making computations directly within the control system and letting exchange data between the control system and models is a way of simplifying the whole process of calculating and applying machine's operational parameters as well as keeping track of them. In addition, having so-called an on-line model could be useful for system diagnostic and faults detection, especially when the objective approach is considered. The concept of the Virtual Accelerator will be presented as well as its implementation for the Tango control system as it is planned to be used for both facilities: the Solaris in Kraków, Poland and the MAX IV in Lund, Sweden. This includes the ModelServer tango device, the simplified C/C++ Tango API to be used with codes like Tracy and the tango2elegant script providing easy solution for integrating the Elegant tool with the Tango.

Slides MOSBC3 [2.232 MB]

TUABC2

Global Optimization of the ANKA Lattice Using Multiobjective Genetic Algorithms (MOGA)

emittance, optics, quadrupole, lattice

72

M. Streichert, N. Hiller, E. Huttel, V. Judin, B. Kehrer, M. Klein, S. Marsching, C.A.J. Meuter, A.-S. Müller, M.J. Nasse, M. Schuh, N.J. Smale
KIT, Karlsruhe, Germany

Funding: This work has been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320.
The optimization of a storage ring lattice is a multiobjective problem, since the parameter space of possible solutions can be very large and a high number of constraints have to be taken into account during the optimization process. In this paper we used Genetic Algorithms (GA) and MultiObjective Genetic Algorithms (MOGA), which can solve such problems very efficiently and rapidly, to find the optimized settings for the ANKA storage ring lattice.

TUADI1

Storage Ring EDM Simulation: Methods and Results

simulation, lattice, factory, proton

99

Y. Senichev, A. Lehrach, R. Maier, D. Zyuzin
FZJ, Jülich, Germany
S.N. Andrianov, A.N. Ivanov
St. Petersburg State University, St. Petersburg, Russia
M. Berz, K. Makino
MSU, East Lansing, Michigan, USA

The idea of Electric Dipole Moment search using the electrostatic storage ring with polarized beam is based on accumulation of additional tiny spin rotation, about one-billionth of radians per second, occurred only in the presence of EDM. This method can be realized under condition of the long-time spin coherency ~1000 seconds. During this time each particle performs about 109 turns in ring moving on different trajectories. At such conditions the spin-rotation aberrations associated with various types of space and time dependent nonlinearities start playing a crucial role. To design such a ring the computer simulation is necessary taking into account all factors affecting the spin. We used COSY-Infinity and integrating program with symplectic Runge-Kutta methods in composition with analytic methods. We developed a new lattice based on the alternating spin rotating. As a result, we can achieve the SCT of ~5000 seconds. The difficulties of these studies are still in the fact that the aberrations growth is observed in the scale of 109 turns and few million particles. For this simulation we use a supercomputer with parallel computing process.

Slides TUADI1 [0.951 MB]

WEP06

Particle Tracking in Electrostatic Fields with Energy Conservation

simulation, controls, quadrupole, lattice

149

A.N. Ivanov
St. Petersburg State University, St. Petersburg, Russia

The key idea of the research is to consider spin dynamics in electrostatic fields. Due to the fact, that spin rotation frequency explicitly depends on velocity of the particle and its kinetic energy is changed in electrostatic fields it is important to use some technique that provides both conservation energy and symplicticity condition. An appropriate mathematical model is described and the results of numerical calculation are shown. In conclusion, fringe fields influence is examined and compared with case of ideal fields.

WEACC3

Matrix Formalism for Long-term Evolution of Charged Particle and Spin Dynamics in Electrostatic Fields

lattice, simulation, quadrupole, dipole

187

A.N. Ivanov, S.N. Andrianov
St. Petersburg State University, St. Petersburg, Russia

The matrix formalism as a numerical approach for solving of ODE equations is considered. It is a map method and has several advantages over classical step-by-step integration methods. This approach allows to present the solution as set of numerical matrices. A complete derivation of the equations this method is based on will be shown. Problems of symplectification and computing performance are discussed. We have developed an application that provides a tool for differential equations solving. The developed program allows to generate the final programming codes on C++, Fortran, MATLAB, C#, Java languages. The given approach is applied to long-term evolution of charged particle and spin dynamics in electrostatic fields.

Slides WEACC3 [1.441 MB]

THP09

Global Scan of All Stable Settings (GLASS) for the ANKA Storage Ring

emittance, optics, quadrupole, dynamic-aperture

239

M. Streichert, N. Hiller, E. Huttel, V. Judin, B. Kehrer, M. Klein, S. Marsching, C.A.J. Meuter, A.-S. Müller, M.J. Nasse, M. Schuh, N.J. Smale
KIT, Karlsruhe, Germany

Funding: This work has been supported by the Initiative and Networking Fund of the Helmholtz Association under contract number VH-NG-320.
The design of an optimal magnetic optics for a storage ring is not a simple optimization problem, since numerous objectives have to be considered. For instance, figures of merit could be tune values, optical functions, momentum compaction factor, emittance, etc. There is a technique called “GLobal scan of All Stable Settings” (GLASS), which provides a systematic analysis of the magnetic optics and gives a global overview of the capabilities of the storage ring. We developed a parallel version of GLASS, which can run on multi-core processors, decreasing significantly the computational time. In this paper we present our GLASS implementation and show results for the ANKA lattice.