Optimization of Electrostatic Quadrupole Profile to Reduce Image Charge Effects

Year 2021, Volume: 25 Issue: 2, 149 - 154, 20.08.2021

Selcuk Hacıomeroglu

https://doi.org/10.19113/sdufenbed.832265

Abstract

Vertical electric fields need to remain orders of magnitude smaller than the horizontal electric field in storage ring electric dipole moment experiments. Otherwise, the coupling with the magnetic dipole moment dominates the spin precession, eventually leading to a false signal. This work presents first quantitative studies regarding electrostatic quadrupole profile optimization, which helps suppressing image beam induced vertical electric fields. Besides the demonstration of the profile optimization, its suppression performance is also studied for various beam offsets and beam size configurations. It is found that with the optimum profile, the vertical electric field can be reduced by two orders of magnitude.

Keywords

Electrostatic quadrupole, Particle accelerator, Image charge

Supporting Institution

Institute for Basic Science

Project Number

IBS-R017-D1

Thanks

I would like to thank Yannis K. Semertzidis and William M. Morse for helpful discussions.

İmaj Yükü Etkilerinin Azaltılması için Elektrostatik Kuadrupol Profilinin Optimize Edilmesi

Abstract

Saklama halkasında yapılan elektrik dipol momenti deneylerinde dikey yönlü elektriksel alan, yatay yönlü elektriksel alandan mertebelerce düşük olmak zorundadır. Aksi halde manyetik dipol momenti ile olan etkileşim baskın gelir ve yanlış sonuçlar verecek bir sinyale yol açar. Bu çalışma ile ilk defa ışın demeti üzerindeki imaj yüklerinden kaynaklı dikey yönlü elektriksel alanı baskılamak maksadıyla elektrostatik kuadrupol profilinin optimizasyonu üzerine yapılan çalışmalar gösterilmektedir. Çalışmada profil optimizasyonun gösterilmesinin yanı sıra, çeşitli parçacık demeti konum ve büyüklükleri için dikey yönlü elektrik alanı baskılama performansı da incelenmiştir. Optimum profil bulunduktan sonar dikey yönlü elektriksel alanı iki mertebe azaltmanın mümkün olduğu görülmüştür.

Keywords

Elektrostatik kuadrupol, Parçacık hızlandırıcısı, İmaj yükü

Project Number

IBS-R017-D1

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