Einzel lens purdue rare isotope measurement laboratory, purdue university, 525 northwestern avenue, west lafayette, in 479072036 telephone. Predesigner free optical layout tool lens calculator. An einzel lens works via a semidelicate balance of ion kinetic energy and the potential difference between the central electrode and the outer electrodes. An einzel lens is an electrostatic lens that focuses without changing the energy of the beam. Johnson, university of manchester and the cockcroft institute, t.
Rotman lens designer software from remcom rf globalnet. Tharp, marquette university, alpha collaboration an einzel lens can be made from a series of hollow. The optimization of a lowenergy scanning microcolumn is proposed by adopting a modified einzel lens sandwiched between an aligner and a deflector. Simulate light through the system and compute images and intensities at various locations in the design. Optical design software for simulating systems of lenses, prisms, etc. Nov 15, 2017 to accurately study these factors in einzel lens designs, we can use particle tracing simulation. Focal length calculations show good agreement with other results from the literature. 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. Fresnel lens design software precision engineering consortium.
Practical computeraided lens design by gregory hallock smith. We dont know when or if this item will be back in stock. Lenses of general shapes can be modeled, with light rays entering arbitrary angles. A tour of the simion demo simion 2019 supplemental. The central element of electrostatic ion optics is the accelerating tube lens immersion lens. Hesq helical electrostatic quadrupole, a low energy beam.
The introduction of the computer revolutionized the way lenses optical systems are designed and evaluated. In this paper, we will present a design and results of a pic code simulation with space charge. The accelerating tube lens consists of tw o metal tubes with different electrical potentials v 1 and v 2 as indicated in fig. The neutralization source was placed 20 cm downstream from the. The problem is to slow a packet of ions so that they converge in time. Lens design software free download lens design top 4 download offers free software downloads for windows, mac, ios and android computers and mobile devices. This figure shows the upper half of a cylindricallysymmetric einzel lens with the x.
The electrostatic focusing of nanoparticles using a 3electrode einzel lens is investigated through particle trajectory simulations. It consists of three or more sets of cylindrical or rectangular tubes in series along an axis. Einzel lens calculation and design for the alpha experiment b. Synopsys is one of the largest and most powerful lens design programs in the world, with features found nowhere else. The purdue rare isotope measurement laboratory prime lab is a dedicated research and service facility for accelerator mass spectrometry ams. Get the latest industry news and expert insights delivered straight to. The utility and accuracy of the einzel lens models has been demonstrated in the development of a diagnostic model of. A threedimensional simulation software for charged.
Electrostatic lenses are used for the extraction, preparation and rst acceleration of electron and ion beams. Thin lenses are less expensive to manufacture via injection molding and have less chromatic dispersion. 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. Ams is an ultrasensitive analytical technique for measuring low levels of longlived radionuclides and rare trace elements. The quadrupole lens consists of two single quadrupoles turned 90 with respect to each other.
The synopsys optical solutions group osg, formerly optical research associates ora, has been providing worldclass support to our code v customers for over 40years. Nov 18, 2008 im trying to design an einzel lens to focus an ion beam. The method design and optical evaluation are supported by the standard code simion. Simple analytical method to design electrostatic einzel lens. Focusing on einzel lenses with particle tracing simulation. 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. Particle tracing in an einzel lens with comsol multiphysics this einzel lens example consists of three cylinders aligned on the same axis. Synopsys code v optical design software provides industryleading solutions for lens design and other imaging systems design. The people at lightmachinery are veterans of the laser and optics world with many years of experience in the areas of optical design, high power lasers, optical fabrication, laser systems, metrology, thin film coatings and custom machinery fabrication. A detailed summary of the einzel models used for the code has been presented. The multiple processors available in todays computers have opened the door to parallel processing. Now based on this angle of refraction, the ray hits the other opposite, surface 2 of the lens.
An inwaveguide microwave plasma source has been utilized as the ion beam neutralizer 2. The outer cylinders are grounded, while the cylinder in the middle is held at a fixed voltage. 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. Gravitational waves and the laser interferometer space. Optimization of electrostatic lens systems for lowenergy. Of these cylinders, the middle one maintains a fixed voltage, while the outer two cylinders are grounded.
Optics elements for modeling electrostatic lenses and. Six plates are parallel to the ion flight path with the middle plate at a particular potential. An einzel lens is an electrostatic device used for focusing charged particle beams. A new design and computer simulation of a 5electrode ion. Thin film cloudthis thin film coating design software is becoming very powerful with very fast optimization. Optical design software for optical systems comprised of light sources, lenses, apertures, prisms, imagers, photometers, etc. E ex e x, e y, e z is the electric field at point xx,y,z a ax a x, a y, a z represents an infinitesimal portion of the surface. A new einzel lens beam chopper has been developed to provide the necessary pulse width of a few microseconds.
With its powerful psd algorithm, synopsys can do in one second a job that takes other programs more than an hour. 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. An alternative grid extraction was developed for the mi. At the same time, the widespread access to 64 bit systems allows the software a more effective use of available ram. Computational study of electrostatic focusing of aerosol. What i dont understand is that the potential is lowest at the centre of a cylindrical lens highest closer to the central electrode. Luxexcel will provide ophthalmic labs with a custom lens design software suite called the luxexcel visionmaster. Implementation of an einzel lens showing the ion path. Beginner tutorial 4 designing a fresnel lens with the. The method turns into a tool to design an es einzel lens for wide applications. However the discontinuous structure of the fresnel. Refractive index and transmission tables for 112 sellmeier and. These lenses are also found in ion propulsion systems as well as ion and electron beam experiments.
Parallelization for electromagnetic software integrated. Etalon designerone of our most popular and useful design tools, provides a close approximation to the performance you can expect from our fabry perot etalon. Drawings can now be edited by dragging on key features with the mouse lens drawing. Analysis of diffraction gratings of arbitrary groove profiles. This figure shows the upper half of a cylindricallysymmetric einzel lens with the xaxis as symmetry axis. Another idea is a einzel lens or a unipotential lens which focuses the charged particles without changing their energy 1. Led simulation reflector lenses led reflector and lens simulation using tracepro illumination design and analysis software 2 as the interactive optimizer, the user is able to begin a project with an initial or basic design, which can be validated with interactive ray tracing and.
Define the lens create the parametric lens with the following steps. 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. Milliampererange argon ion current can be extracted from the source. Fresnel lens design software precision engineering. The design base line is 5 ma beam extraction from a 3 mm aperture. Get the latest industry news and expert insights delivered straight to your inbox. The einzel lens shape as it is set up for an optimization is shown as a cross section in fig. Latest qioptiq catalog lens list for the gaussian beam mode lens suggestions. The extraction has been designed to be versatile and easy to match to different plasma densities. A cdrom database with more than 30000 design examples from us patent literature and japanese patent literature. This ability has revolutionized the speed of our field solvers to analyze models. Einzellinse single lens 1, or unipotential lens, 2 is a charged particle electrostatic lens that focuses without changing the energy of the beam. The neutralization source was placed 20 cm downstream from the extraction system. Product engineering teams can share complete design data and analyze performance in a.
Einzel lens dpace partner in the commercial accelerator. This chapter will cover a dynamic variant of this were the potential. Zoom out by right clicking your mouse and selecting zooming zoom out or just click on the zoom out button on the toolbar. With this tool, labs and eventually eye care professionals can design custom lenses for their patient. This particular model consists of three axially aligned cylinders. V ery often ion optics with electrostatic lenses is called electron optics. I have been using orthotool for the past few years for most of my initial orthok fitting and the success rate improved in a great deal when the diagnostic fitting was incorporated. It may be found in cathode ray tubes, ion beam and electron beam experiments, and ion propulsion systems. In many cases, the selection of tolerances is determined by experience, as well as by outputs from optical design software. The literature seems pretty consistent that the beam diverges in the first gap and converges in the second gap. By harnessing the power of opticstudio, opticsbuilder, and opticsviewer, optical, mechanical, and manufacturing engineers can speak the same language across the optical product development process. 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.
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 lens focused electron source simulated in simion. The outer cylinders are grounded, while the cylinder in the middle is held at a fixed. The total simulation space with a rectangular cross section and neumann boundaries is 180 mm in length and 5 mm in height. Performance of a slow positron beam using a hybrid lens design. Lens design software with 3d printed ophthalmic lenses you will have more design freedom to create customized products for your customers.
An abstract of the thesis of jessica gifford for the degree of honors baccalaureate of science in physics presented on may 27, 2011. With 3d printed ophthalmic lenses you will have more design freedom to create customized products for your customers. Einzel lens calculation and design for the alpha experiment. To focus charged particle beams, some crts use einzel lenses. Citeseerx a new design and computer simulation of a 5. However the discontinuous structure of the fresnel zone transitions may generate undesirable diffraction effects. The modified einzel lens is composed of four electrodes, and the two center electrodes are specially designed quadrupole lenses having keyhole type rather than circular apertures. Clip summary all winlens3d clips all winlens3d basic clips tell a friend a very gentle introduction to using winlens3d. A beam focus is produced just down beam from the end of the grided einzel lens, and this focus then repeats at regular intervals as a result of the cyclotron motion. Inverse design tool for ion optical devices using the. 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. Fresnel lenses are attractive for scanning systems because they provide optical power from a thin lens. 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.
The ortho tool software purchase was the best investment that i ever made practicing orthok along with the trial set to define the lens design. Pdf einzel lens chopper and behavior of the chopped beam in. W e deri ve the paraxial ray equation for such rotational symmetric electric elds. 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. It consists of three or more sets of cylindrical or rectangular apertures or tubes in series along an axis. One particularly interesting variation on the ion funnel geometry, coined the s lens, was patented by thermo in 2010. An einzel lens, or unipotential lens, is a charged particle electrostatic lens that focuses without changing the energy of the beam. The hesq lenses provide stronger firstorder focusing in contrast to weak secondorder focusing of einzel lenses and is also stronger than alternating gradient focusing. The focusing ability of an einzel lens depends on the following factors. I havent had the chance to test all of them, so youre going to have to try the free ones out for yourself and see what works best for your needs. Q is the total charge enclosed inside the volume bounded by the surface.
Electrostatic devices dpace partner in the commercial. Gravitational waves and the laser interferometer space antenna lisa 1. Lens design software free download lens design top 4 download. Save the project by selecting file save as from the main menu, naming the project fresnel 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.
Free version of the winlens3d optical design package, which provides serious design and analysis tools for optical engineer, student or designer. At purdue we have constructed a major national ams facility centered around the physics departments. The s lens concept takes advantage of the fact that when the interplate spacing of a ring stack is increased, the rf field penetrates further in radially since the plates dont effectively cancel out as easily. Make a box selection around the area to zoom in on by holding the left mouse button on one corner of your zoom area, dragging the mouse to the second corner of your zoom area, and releasing your left mouse button as such. The number and location of multiple axis crossovers shown here are dependent also on the dimensions of the simulation domain and geometric design of the einzel lens. Consequently, the potential of the lens drops and the beam is diverged. The above shows what einzel lens simulation results looks like after it is loaded and the flym has run. Einzel lens chopper and behavior of the chopped beam in the kek digital. Choosing the right optical design software is about more than just the software. Example of increasing graphic sophistication, from a simple crosssectional line plot to a 3d wireframe to a 3d solid model in modern lens design software. Gravitational waves and the laser interferometer space antenna lisa.
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