The michelle three-dimensional electron gun and collector modeling tool: theory and design

Petillo, John; Eppley, K.; Panagos, Dimitrios; Blanchard, P.; Nelson, Eric; Dionne, N.; DeFord, J.F.; Held, Ben; Chernyakova, L.; Krueger, Wolfgang; Humphries, S.; McClure, T.; Mondelli, A.; Burdette, J.; Cattelino, M.; True, R.B.; Nguyen, Khanh; Levush, B.

doi:10.1109/tps.2002.801659

Cited by 224 publications

(29 citation statements)

References 19 publications

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“…The use of multigrids [6,7] and subgrids [8][9][10][11] to provide high resolution only where needed is well established in many fields but has not seen widespread use in the PIC community. One of the reasons for this is the complexity of accurately dealing with particles as they enter and exit regions of different resolution.…”

Section: Task 2: Ltp-based Advanced Mesh Capabilitiesmentioning

confidence: 99%

“…The development of particle algorithms for unstructured grids [7] has lead to research addressing some of the same problems encountered in moving particles between different grid resolutions. In particular, the technique of stopping particles at the interface as they transition between grid regions and switching to fields in the new grid for particle pushing is of interest.…”

Section: Task 2: Ltp-based Advanced Mesh Capabilitiesmentioning

confidence: 99%

See 1 more Smart Citation

Improved Space Charge Modeling for Simulation and Design of Photoinjectors

Jackson¹,

Bui²,

Verboncoeur³

2010

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Section: Task 2: Ltp-based Advanced Mesh Capabilitiesmentioning

confidence: 99%

Section: Task 2: Ltp-based Advanced Mesh Capabilitiesmentioning

confidence: 99%

Improved Space Charge Modeling for Simulation and Design of Photoinjectors

Jackson¹,

Bui²,

Verboncoeur³

2010

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“…MICHELLE [2], [3] is a two-dimensional (2D) and threedimensional (3D) steady-state and time-domain electrostatic particle-in-cell (PIC) code. It has been employed successfully by industry, national laboratories, and academia to design a wide variety of devices, including multistage depressed collectors, gridded guns, multi-beam guns, annular-beam guns, sheet-beam guns, beam-transport sections, and ion thrusters.…”

Section: Introductionmentioning

confidence: 99%

Advanced electron guns and depressed collectors design and optimization using the MICHELLE / ANALYST Environment

Held¹,

DeFord²,

Petillo³

et al. 2008

2008 IEEE International Vacuum Electronics Conference

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Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. AbstractNext generation vacuum electron devices under development for millimeter and sub-millimeter wavelengths are often characterized by very small features that must be very precisely designed and manufactured for proper tube function and longevity. In this regime the need for automated physics-based optimization to aid the designer in meeting device performance specifications is much more critical than in larger, lower frequency devices where prototyping and experimentation are more readily performed.Recent work has been done on improving the ability of modeling and design simulation environments to aid the designer in finding optimum configurations. As the simulation tools have improved to enable first-pass design success in some cases, the potential benefits of optimization techniques become even more significant. This paper discusses methods for optimization of electron guns as well as multistage depressed collectors.

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“…To date, there has been very little quantitative modeling and analysis of these effects with full space charge and beam thermal spread. To address this deficiency, we introduce several models and compare them to established theory and MICHELLE [4] simulations (mostly with 2-dimensional geometries); conclusions are then drawn from the models.…”

Section: Introductionmentioning

confidence: 99%