Lorentz-HF

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Lorentz-HF

LORENTZ-HF, the high frequency version of LORENTZ, is an easy-to-use 3D full-wave electromagnetic simulator based on CFIE (combined-field integral equation) combined with the ability to analyze charged particle trajectories in the presence of high frequency electromagnetic fields.

It uses the Method of Moments (MoM) (or Boundary Element Method) coupled with Physical Optics found in SINGULA and is coupled with the ray tracing and powerful emission regime and secondary emission capabilities of LORENTZ.

LORENTZ-HF also calculates near and far field results, power and directive gain, radar cross-section, axial ratio, and input impedance, admittance and scattering parameters.

It is uniquely suited for early-stage simulation and resolution of the Multipactor Discharge phenomenon affecting many high power vacuum electronics device designs.

LORENTZ-HF can also be combined with electrostatics, magnetostatics and time-domain solvers for LORENTZ-HFE, LORENTZ-HFM and LORENTZ-HFTD.

LORENTZ-LF, the low frequency version of LORENTZ can be combined in a similar way for LORENTZ-LFE and LORENTZ-LFM.

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  • Physical Optics hybridized into MoM to solve problems such as large antenna dishes that basic MoM or FEM cannot handle.
  • Full secondary emission is available with a probabilistic chance of emission depending on primary impact energies.
  • Particle interaction with gravity, viscosity and mobility, scattering through residual gas collisions.
  • Sources include: Incident plane wave, delta voltage, line voltage, waveguide, and magnetic frill.
  • A wide range of graphs & plots (near field, far field, rectangular, Smith Charts, radiation patterns) can be created based on parameters such as H, B, E, D, J, Z, S, Y.
  • Display rectangular plots of current, fields and input impedance. Display polar plots of power gain, contours of currents and fields. D...
  • Physical Optics hybridized into MoM to solve problems such as large antenna dishes that basic MoM or FEM cannot handle.
  • Full secondary emission is available with a probabilistic chance of emission depending on primary impact energies.
  • Particle interaction with gravity, viscosity and mobility, scattering through residual gas collisions.
  • Sources include: Incident plane wave, delta voltage, line voltage, waveguide, and magnetic frill.
  • A wide range of graphs & plots (near field, far field, rectangular, Smith Charts, radiation patterns) can be created based on parameters such as H, B, E, D, J, Z, S, Y.
  • Display rectangular plots of current, fields and input impedance. Display polar plots of power gain, contours of currents and fields. Display 3D surface plots of radiation patterns and display Smith charts of s-parameters.
  • Export results to text files.
  • Powerful parametric section enables user-defined changes to model geometries, materials, boundary and voltage conditions etc.

LORENTZ-HF can also be hybridized with INTEGRATED low frequency electric or magnetic solvers for to include effects such as:

  • Various emission regimes, including: Fowler-Nordheim, Child’s Law, Richardson-Dushman, Schottky and Extended Schottky.
  • Simulate lens focusing properties, beam emittance and space charge.

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What hardware configuration advice can you give for optimal performance?

What hardware configuration is required for optimal performance?

System Requirements:

  • 64 bit operating system
  • Microsoft ® Windows Vista ®, Windows 7, Windows 8 or higher
  • If you encounter problems installing from a network drive please contact INTEGRATED Technical Support
  • Installation requires approximately 110 MB disk space
2D Programs:
  • A minimum of  4 GB of RAM is required
  • Although the software runs on single-processor machines, running it on multi-processor system will allow the software to solve in a  parallel fashion utilizing the parallel resources.
3D Programs:
  • The programs will run with a minimum of  4 GB of RAM but this...

What hardware configuration advice can you give for optimal performance?

What hardware configuration is required for optimal performance?

System Requirements:

  • 64 bit operating system
  • Microsoft® Windows Vista®, Windows 7, Windows 8 or higher
  • If you encounter problems installing from a network drive please contact INTEGRATED Technical Support
  • Installation requires approximately 110 MB disk space

2D Programs:

  • A minimum of 4 GB of RAM is required
  • Although the software runs on single-processor machines, running it on multi-processor system will allow the software to solve in a parallel fashion utilizing the parallel resources.

3D Programs:

  • The programs will run with a minimum of 4 GB of RAM but this is not recommended for larger problems in which 12 GB of RAM or more should be used. The more RAM used, the faster larger problems will be solved
  • Multi-core processors are strongly recommended as the 3D programs are multi-threaded

INTEGRATED supports software products for 64 bit operating systems

For most of our customers, this announcement has no relevance as most companies have standardized hardware requirements that fit or exceed the 64 bit operating systems required by our company. INTEGRATED’s development tools used for advancements require the installation of 64 bit systems*.

Experience the full power of our simulation tools. Automatically reduce the solution time.

By running the software in a 64 bit system, the system is able to make more effective use of available RAM. The performance of the simulation is greatly affected by the power of the computer in use.

*The suppliers of the software tools we use have this requirement for us as well.

Available RAM versus Problem Size

For small problems the processor speed is the biggest consideration for calculations. If your processor works at twice the speed the problem will be solved in half the time. For larger problems, however, memory management progressively becomes a bigger and bigger consideration. If the memory needed to solve is larger than available RAM – then most of the problem is being swapped back and forth between RAM and the hard disk as the problem proceeds. The efficiency of this process becomes the biggest single factor in the speed of solving large problems. Since this is managed by Windows itself – taking account of other processes also running – we can do very little to help you optimize further from within our software, but can offer the following advice regarding the system setup:

  • Determine the size of problems you will be solving. This is reported in the Message Area as required disk space when the BEM solver begins. It is also reported for the existing element distribution from the menu Solution>Elements>Problem Size.
  • The importance of getting as much RAM as needed on a 64 bit system is illustrated by the benchmark results below for a challenging magnetic problem run on 4 different computers:
    Comparising of solution times for a nonlinear 3D magnetic model requiring 6 GB memory

    The model took 6 hours to solve on a basic system and 3/4 hour to solve on a good system. There are many differences between the 4 systems used, leading to some noise in the plot. However, it is clear that the optimal solution is to use a 64 bit version of the software with more RAM available than the reported memory requirement.
  • 2 hard drives: When choosing hard disk features access time is clearly important. You can set up the locations of the scratch files from Utilities>Settings. Out of various configurations we tested, this was the single most important factor in performing faster analyses when the memory required exceeded available RAM.
  • RAID ARRAY: using a RAID array lets you use multiple disks as a single drive letter, but will manage the access very efficiently. We configure our own systems such that IES software is installed on d: (a RAID array) with the program and scratch files using d:. For more generic information about configuring a RAID array on your computer, check HOW TO: Establish a Striped Volume (RAID 0) in Windows Server 2003 (Microsoft Knowledge Base).

Last updated: June, 2016

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