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45° Tandem Parallel Plate Analyser

SIMION Project. 45° Tandem Parallel Plate Analyser. Louise Belshaw Spiros Divanis Patrik Gunacker Peter Herczku. SIMION Project: Tandem PPA Analyser. PPA ONE. IONS, ELECTRONS. IONS. ELECTRONS. PPA TWO. SIMION Project: Tandem PPA Analyser. `. Tandem Parallel Plate Analyser:

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45° Tandem Parallel Plate Analyser

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  1. SIMION Project 45° Tandem Parallel Plate Analyser Louise Belshaw SpirosDivanis PatrikGunacker Peter Herczku

  2. SIMION Project: Tandem PPA Analyser PPA ONE IONS, ELECTRONS IONS ELECTRONS PPA TWO

  3. SIMION Project: Tandem PPA Analyser ` • Tandem Parallel Plate Analyser: • Build a simple tandem PPA, consisting of two PPAs placed at 90°. • Investigate required voltages and angles of acceptance. • Add an Einzel lens before the input slit of PPA1, and place another between the exit of PPA1 and the entrance of PPA2. • How does this change our results?

  4. SIMION Project: Tandem PPA Analyser SIMION Project: Tandem PPA Analyser ` Simple Tandem PPa PPA ONE SIMION results For this PPA, f = 0.6 Electrons of KE = 1000 eV Expect required V = -600 V Used: -597 V Required Deflecting voltage: Acceptance Solid Angle: α = ± 3° β = ± 5° Ω = 4αβ= 0.018steradians Transmission: Strong angular dependence: With α = 3, β = 5, T = 0.2 % α = 1, β = 1, T = 3 % PPA TWO

  5. SIMION Project: Tandem PPA Analyser SIMION Project: Tandem PPA Analyser Simple Tandem PPa Typical Particle Definitions:

  6. SIMION Project: Tandem PPA Analyser Tandem Ppa Without focussing

  7. SIMION Project: Tandem PPA Analyser ` Tandem PpaWiTh Einzel lens EINZEL LENS 1 EINZEL LENS 2

  8. SIMION Project: Tandem PPA Analyser ` Tandem Ppa With Einzel lens

  9. SIMION Project: Tandem PPA Analyser SIMION Project: Tandem PPA Analyser Tandem Ppa With Einzel lens Voltages: Transmission: With α = 3, β = 5, T = 5 % α = 1, β = 1, T = 30 %

  10. SIMION Project: Tandem PPA Analyser ` Tandem Ppa With Deceleration and focussing

  11. SIMION Project: Tandem PPA Analyser ` Tandem Ppa With Deceleration and focussing Voltages: Transmission: With α = 3, β = 5, T = 0.4 % α = 1, β = 1, T = 9.2 %

  12. SIMION Project: Tandem PPA Analyser Transmission comparison

  13. Thank you for your attention!

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