Analysis and fringe field scaling of a legacy set of electrostatic deflector aberration formulas [Chapter Seven]

Journal Article · 29 December 2019 · Advances in Imaging and Electron Physics

DOI: https://doi.org/10.1016/bs.aiep.2019.11.008 · OSTI ID:1661697

Valetov, Eremey ^[1]

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1. Michigan State Univ., East Lansing, MI (United States); Michigan State University, MI, USA. Department of Physics and Astronomy

In this work we performed an analysis of the derivation of first and second order analytic aberration formulas by Wollnik (1965) for the case of electrostatic deflectors in the horizontal plane. We found that these aberration formulas are valid for the main field of the deflector; however, they do not account for any fringe field effects. To address this issue, we modified the aberration formulas from Wollnik (1965) for a hard edge fringe field by scaling the particle inclinations at the entrance and exit edges of the deflector. These modified aberration formulas fully agree with electrostatic aberration formulas derived by Valetov and Berz (2020), as well as with differential-algebraic (DA) calculations of electrostatic deflector aberrations using the code COSY INFINITY.

• Research Organization: Michigan State Univ., East Lansing, MI (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• Grant/Contract Number: FG02-08ER41546; SC0018636
• OSTI ID: 1661697
• Journal Information: Advances in Imaging and Electron Physics, Journal Name: Advances in Imaging and Electron Physics Vol. 213; ISSN 1076-5670
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English