Optics Measurements, Corrections and Modeling for High-Performance Storage Rings

Session

Modeling

21 Jun 2011, 14:00

6/2-024 - BE Auditorium Meyrin (CERN)

Conveners

Modeling

• riccardo bartolini (Diamond Light Source and John Adams Institute)

Description

1. Is it desirable to converge to one optics code?
2. Collaborative approach to optics code?
3. Is on-line modeling really on-line?
4. Differences between Tevatron and LHC magnet modeling

41. LHC magnet modeling

Dr Ezio Todesco (CERN)

21/06/2011, 14:00

We give an overview of the strategy used for the magnetic modeling of the LHC. Magnetic measurements are fit with a set of parametric equations (FiDeL) based on decomposition of the main components of the magnetic field. These equations are impelmented in the LHC control system LSA,which is the tool used to power the magnets. A dedicated code (WISE) creates the input files for tracking codes...

52. Optics codes

Dr Dieter Einfeld (CELLS)

21/06/2011, 14:20

For the design and layout of accelerators "Beam-Dynamics" calculations have to be performed in order to show the functionality of the machine and to determine the specifications and requirements of the different accelerator components (vacuum-system, magnets, power supplies, correctors, etc.). For these calculations the so called "Beam-Dynamic-Codes" are used, as for example: MAD, DIMAD,...

43. RHIC online modeling and experience with feedbacks

Dr Guillaume Robert-Demolaize (BNL)

21/06/2011, 14:40

The RHIC online model is made of a lattice and energy ramp design used as inputs to two computation servers, RampManager and OptiCalc, each with their own dedicated purpose. In the past, the RHIC energy ramp was based entirely on stepstones to allow for orbit and tune control and beta* squeeze schemes evolving throughout the energy ramp. RampManager loads all required databases, services all...

42. LHC Online Modeling

Gabriel Johannes Mueller (Technische Universitaet Dresden-Unknown-Unknown)

21/06/2011, 15:10

The Large Hadron Collider (LHC) at CERN is a particular challenging high energy, superconducting machine with respect to the design as well as to the operation. That requires a sophisticated software environment and a good collaboration of the teams involved to transfer the simulation output for desired beam configurations into the control system, verify and check the control system settings,...

54. Non-linear modeling of accelerators

Frank Schmidt (CERN)

21/06/2011, 15:30

Only very recently it became possible to even contemplate about effective non-linear modeling of accelerators, on the other hand modern superconducting require such modeling for proper correction of nonlinear effects. In recent years, one has begun to carefully measure harmonics and misalignments of all magnets of an accelerator and to provide transfer functions for the control system,...