The extraction has been designed to be versatile and easy to match to different plasma densities. This application interactively calculates the camera depth of field and background blur and visually simulates it on a photo together with different types of lens blur bokeh for any lens, camera and distance combination. Synthrays the browser based optical simulation tool. Eindhoven university of technology bachelor optimizing the. Einzel lenses are used to focus charged particle beams in cathode ray tubes crts.
At the same time, the widespread access to 64 bit systems allows the software a. Screenshots of simion simulation of three electrode einzel lens, with calculated electric field red lines of equipotential and calculated particle trajectories blue. These lenses are also found in ion propulsion systems as well as ion and electron beam experiments. The multiple processors available in todays computers have opened the door to parallel processing. A new design and computer simulation of a 5electrode ion. Screenshots of simion simulation of three electrode einzel lens, with calculated electric field red lines of equipotential and calculated particle trajectories blue lines. The focusing in vacuum is greatly influenced by a ratio of electrostatic potential energy to kinetic energy. I know only the angle of refraction at surface 1 of the lens, now i need to draw a line from surface 1 of the lens to surface 2 of the lens based on the angle of refraction at surface 1 of the lens. Mar 22, 20 this project provide a simulation of the quality of lenses which permit, according mtf curves and some other, to see the picture which will be produced sharpness, distorsion. Improving the quality of the ion beam exiting a quadrupole.
Now based on this angle of refraction, the ray hits the other opposite, surface 2 of the lens. Refractive index and transmission tables for 112 sellmeier and. The electrostatic focusing of nanoparticles using a 3electrode einzel lens is investigated through particle trajectory simulations. An opensource web app to simulate reflection and refraction of light. Examples include electron guns, ion guns, ion implanters, nanotube. At 2650 w of rf power, the source produces 1 ma of hsup. Each einzel lens consists of three separated cylindrical electrodes. The first involved ions originating along a line 80 mm from the lens and focused to a point 300 mm from their source. I know the basics behind the operation of the lens, but am struggling to find any equations for the focal length of an einzel lens. Charged particle beams integrated engineering software. Pdf simulation study and analysis of a compact einzel lens. These programs can be used for analysing beam transport with selfconsistent. You can change the width and height of the embedded simulation by changing the width and height attributes in the html. Rays emerge from a single point, with number controlled by the ray density slider.
The outer cylinders are grounded, while the cylinder in the middle is held at a fixed voltage. The simulation of the ion beam extraction and electrostatic focusing is carried out using 2d raytracing code igun and optics. The focusing ability of an einzel lens depends on the following factors. Chakrabarty, vecc, 1af bidhannagar salt lake, kolkata 700064, india abstract magnetic scalar potential and field distributions along the central axis of a magnetic einzel lens consisting of a. We will then add an einzel lens before the quadrupoles and attempt to optimize instrument conditions. Simulation of hsup ion source extraction systems for. With the former extraction system, comprised of extraction electrodes and an einzel lens, the electrons from the neutralizer were attracted to the high positive potential of the lens. Comsol multiphysics software understand, predict, and. Simion is a software package primarily used to calculate electric fields and the trajec.
Mar 02, 2005 hi, im working on a project in designing a tof mass spectrometer and want to include an einzel lens in order to help focus the ion beam onto the detector. Focusing on einzel lenses with particle tracing simulation november 15, 2017 you can use electrostatics analysis and charged particle tracing to better understand einzel lens systems and optimize their designs. A mirror whose shape is part of a circle, which is defined by three points. In certain applications like injection of a low energy. An alternative grid extraction was developed for the mi. When optical lens size is compatible with the working wavelength, the traditional lens analysis tools such as raytracing method will lose their accuracy. Linear magnification is, where and are the displacements from the axis of the object and image locations. This option permits the user to change simulation parameters at any point during the trajectory calculations. Einzel lens chopper and behavior of the chopped beam in. It consists of three or more sets of cylindrical or rectangular apertures or tubes in series along an axis. An inwaveguide microwave plasma source has been utilized as the ion beam neutralizer 2. Optical simulation software integrated in mechanical cad software solidworks.
Einzel lens focused electron source simulated in simion. Move the point named focus to the right side of the lens to change to a concave lens. The helmholtzlagrange law relates the linear magnification m and angular magnification m of rays through an electrostatic lens to the ratio of potentials between the two ends of the lens. Watch how the image changes when you adjust the focal length of the lens, move the object, move the lens, or move the screen. I would ask everyone using ibsimu to use this reference.
Dof simulator camera depth of field calculator with. The simplest led source model is a point source where all rays are emitted from a single point. Lenses of general shapes can be modeled, with light rays entering arbitrary angles. Combination of nikkor lens and cxformat camera nikon 1 series is available with this simulator. This method restricts the implantation area to a small region. Focusing on einzel lenses with particle tracing simulation.
The outer cylinders are grounded, while the cylinder in the middle is held at a fixed. The extraction is a 5electrode system with an adjustable puller electrode voltage for optimizing the beam formation, a watercooled electron dump electrode and an accelerating einzel lens. Top 4 download periodically updates software information of lens simulation full versions from the publishers, but some information may be slightly outofdate. The ion beam simulator ibsimu software package 8 was used to design. The literature seems pretty consistent that the beam diverges in the first gap and converges in the second gap. Led simulation reflector lenses led reflector and lens simulation using tracepro illumination design and analysis software 6 putting it all together after modeling led sources, users can add lenses and reflectors to represent the complete led lighting system. Electrostatic lens calculation tool with real time. The second einzel lens voltage required in the model. Jul 21, 2011 in this study the precharacterization was carried out using simion versions 7. Simion has often been used to simulate 2d and 3d lens systems, either in. Lorentz programs can simulate a wide variety of charge particle beam trajectory applications. Nov 15, 2017 to accurately study these factors in einzel lens designs, we can use particle tracing simulation. To find out more, see our privacy and cookies policy. Citeseerx a new design and computer simulation of a 5.
The above shows what einzel lens simulation results looks like after it is loaded and the flym has run. With fisheye lenses, the value of the angle of view varies according to the camera format selected, however, the. An ft1 mount adapter is required for actual shooting. Lens simulation software free download lens simulation. Activating the help mode shows descriptions of the interface elements. Move the tip of the object arrow to move the object. Aug 30, 2011 now based on this angle of refraction, the ray hits the other opposite, surface 2 of the lens. An einzel lens works via a semidelicate balance of ion kinetic energy and the potential difference between the central electrode and the outer electrodes.
As a user of comsol multiphysics, you are free from the restrictive nature generally associated with simulation software and have complete control over all aspects of your model. Although sometimes true, this was a false message which appeared after v1. A parallel beam of rays emerges from a linesegment, with density controlled by the ray density slider. The trick is to have them decelerate in a linear field and then when they are in the middle of it chop the field to zero.
An einzel lens is an electrostatic device used for focusing charged particle beams. The threeelement einzel lens example in simion is demonstrated in a tour of the. Beam optical simulation in a proposed magnetic einzel lens. Simion has often been used to simulate 2d and 3d lens systems, either in isolation or as components of other systems.
A light ray that enters the lens is an incident ray. To confirm these results, the simulation software simion 3d. To properly analyze an einzel lens, we need to study the charged particles in the lens subject to appropriate electrical excitation. Comprehensive software for optical design, thin film coatings and illumination. The most common method is to use einzel lenses 6 to focus the beam in the lens 4axis.
Optifdtd software also provides tools so that beam focus size, focus distance, and farfield transform can be obtained directly. It doesnt currently look like much, but this is an xy cross sectional view of a threeelectrode cylindrical lens with ion paths blue shown flying axial through it. Einzel lenses are ion optical beamline components for charged particle guiding and focusing suitable for high vacuum and ultra high vacuum environment. The design base line is 5 ma beam extraction from a 3 mm aperture. An einzel lens, or unipotential lens, is a charged particle electrostatic lens that focuses without changing the energy of the beam. At the same time, the widespread access to 64 bit systems allows the software a more effective use of available ram. Here, we discuss one such example that uses the particle tracing module, an addon product to the comsol multiphysics software. By continuing to use this site you agree to our use of cookies. Milliampererange argon ion current can be extracted from the source. The fdtd method can be used to advantage in the nano lens simulation. You can also be creative in a way that is impossible or a lot harder with traditional approaches, thanks to the ability to couple any number of physics phenomena together and input userdefined physics descriptions, with associated equations and expressions, directly in the graphical user interface gui. For more detailed analyses, the reader is referred to literature refs. A short introduction to each of these elements is given below.
Goptical is free software and is part of the gnu project. Einzel lens chopper and behavior of the chopped beam in the kek digital accelerator k. What i dont understand is that the potential is lowest at the centre of a. The electra software has been benchmarked against simion using a well known lens the 3 cylinder einzel lens and used to determine the configuration of new transfer optics for the cation mass spectrometer. Ray diagrams are constructed by taking the path of two distinct rays from a single point on the object. W e introduce the paraxial ray equation which is appropriate to systems with rotational. It enables building optical systems by creating and placing various optical components in a 3d space and simulates light propagation through the system. Among these, the most common is the socalled einzel lens. Assuming that the concentration of charged aerosol particles injected into the focusing region is low, the distortion of the electric field by space charge due to the. Double einzel lens extraction for the jyfl 14 ghz ecr ion. Dof simulator camera depth of field calculator with visual. Optical ray tracing software by science lab software.
Explain how an image is formed by a converging lens using ray diagrams. Double einzel lens extraction for the jyfl 14 ghz ecr ion source. A new purely electrostatic postextraction system incorporating an einzel lens with. To accurately study these factors in einzel lens designs, we can use particle tracing simulation. In this study the precharacterization was carried out using simion versions 7. Takayama1,2,3 1the graduate university for advanced studies kek. The wideband acceleration method for heavy ions in the kek digital accelerator kekda, which is a fast cycling induction synchrotron, is presented and the experimental results are discussed. Simple general purpose ion beam deceleration system using a.
A threedimensional simulation software for charged. It may be found in cathode ray tubes, ion beam and electron beam experiments, and ion propulsion systems. Trajectory simulations are used to study the focusing of aerosol nanoparticles in a 3electrode einzel lens. Of these cylinders, the middle one maintains a fixed voltage, while the outer two cylinders are grounded. An einzel lens is comprised of three metal cylinderselectrodes arranged coaxially in a row. For a particular combination of a, b, and c, the software maxwell 2d from ansoft was used to find a solution for the potential. Using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for lens simulation license key is illegal. You can also illustrate the magnification of a lens and the difference between real and virtual images. Tamutrap facility status report cyclotron institute. Optics elements for modeling electrostatic lenses and. Magnetic fields can be imported to the simulations from other programs.
Computational study of electrostatic focusing of aerosol. It was shown that reducing the strength of the rf field towards the ion guide exit reduces ion beam divergence. Ion beam simulator ibsimuforum turning off space charge. Nov 18, 2008 im trying to design an einzel lens to focus an ion beam. It provides model classes for optical components, surfaces and materials.
Use this html to embed a running copy of this simulation. To confirm these results, the simulation software simion 3d 8. Einzel lens, as the theory behind it might also apply to the fusor. Here you have the ray diagrams used to find the image position for a converging lens. This particular model consists of three axially aligned cylinders. This is a recording of a free webinar which was held on june 11, 2014 at the during this webinar we will explain how to use. Simulation study and analysis of a compact einzel lens. Particle tracing in an einzel lens with comsol multiphysics this einzel lens example consists of three cylinders aligned on the same axis. Lens simulation for ipad concave and convex lens simulation optomized for mobile. Move the point named focus to change the focal length. The optic was 36mm long with an inner diameter of 14. Some years ago i have written an article series about the operation of digital cameras and photographic lenses. The threeelement einzel lens example in simion is demonstrated in a tour of the simion demo. Demonstration of an einzel lens simulated using simion 3d.
It is used in ion optics to focus ions in flight, which is accomplished through manipulation of the electric field in the path of the ions. Use this html code to display a screenshot with the words click to run. Simion einzel lens example above with corresponding potential energy surface below. Let be the voltages of the three einzel lenses, be the source voltage and be the linac voltage, referenced to platform. The problem is to slow a packet of ions so that they converge in time. The industry standard for charge particle optics simulation. The electra software has been benchmarked against simion using a well known lens the 3 cylinder einzel lens and used to determine the configuration of new transfer optics for. Further improvement was demonstrated when creating a dc gradient towards the exit. The effect of fringing fields on the divergence of the ion beam exiting an rf quadrupole ion guide was studied using a computer simulation.
Parallelization for electromagnetic software integrated. The neutralization source was placed 20 cm downstream from the extraction system. This article demonstrates the einzel lens simulation distributed with simion. Pdf einzel lens chopper and behavior of the chopped beam in. We have used simion 3d to model the einzel lens shown in figure 1. Ibsimu was made public and introduced to the community in a paper contributed to the international conference on ion sources 2009. Pdf a threeelement einzel lens is a standard ion optics used to focus a low energy ion beam. Optimization will be accomplished using simions variable adjust utility. There are simpler focusing elements that utilize electrostatic fields to focus ion beams. Simulation of image formation in concave and convex lenses. Jul 02, 2014 quickfield simulations for electronion optics.
As an ion is exiting the first electrode, the uphill electric field slows its axial kinetic energy and also begins to push the ion outward radially. Module, an addon product to the comsol multiphysics software. Im trying to design an einzel lens to focus an ion beam. This simulator is not compatible with the cameras image area selection. As the beam enters the magnet, it will become confined radially due to the ions larmor precession within the 7t magnetic field. Simple general purpose ion beam deceleration system using. Topics include optical design, optical engineering, illumination, laser, optical materials, thin film coatings, and many more subjects needed to build and analyze complex optical systems. A tour of the simion demo simion 2019 supplemental. Links on optical design and engineering the purpose of this site is to provide a comprehensive list of links related to optics and optical simulation in general. Free optics simulation programs physics stack exchange. Simion 3d is a widely used ionoptics simulation program in many branches of physics. A threedimensional simulation software for charged particle optics, rev. Simulation of an einzel lens with three sets of the unconventional.
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