Reduction of ion back flow using a quadruple GEM detector with various gas mixtures

Sourav Tarafdar; Senta V. Greene; Julia Velkovska; Brandon Blankenship; Michael Z. Reynolds

doi:10.1016/j.nima.2022.167460

Reduction of ion back flow using a quadruple GEM detector with various gas mixtures

Instrumentation and Detectors 2022-10-19 v1

Authors: Sourav Tarafdar , Senta V. Greene , Julia Velkovska , Brandon Blankenship , Michael Z. Reynolds

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Abstract

In gaseous tracking detectors with a large gaseous volume multiple layers of Gas Electron Multipliers (GEM) can be used to block positive ions from flowing back into the active volume, which is detrimental to the tracking performance. We report on studies of effective gain, ion backflow (IBF), and energy resolution in quadruple GEM detectors, and on strategies for minimizing IBF by optimizing the operating voltages of the individual GEM layers and the potential differences between different layers.

Keywords

gas electron multiplier ion backflow quadruple gem detector gas mixtures effective gain energy resolution

Cite

@article{arxiv.2110.08838,
  title  = {Reduction of ion back flow using a quadruple GEM detector with various gas mixtures},
  author = {Sourav Tarafdar and Senta V. Greene and Julia Velkovska and Brandon Blankenship and Michael Z. Reynolds},
  journal= {arXiv preprint arXiv:2110.08838},
  year   = {2022}
}

Comments

14 pages, 11 figures, 4 tables

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