A 128-channel picoammeter system and its application on charged particle beam current distribution measurements

Deyang Yu; Junliang Liu; Yingli Xue; Mingwu Zhang; Xiaohong Cai; Jianjun Hu; Jinmei Dong; Xin Li

doi:10.1063/1.4934849

A 128-channel picoammeter system and its application on charged particle beam current distribution measurements

Instrumentation and Detectors 2017-06-13 v1

Authors: Deyang Yu , Junliang Liu , Yingli Xue , Mingwu Zhang , Xiaohong Cai , Jianjun Hu , Jinmei Dong , Xin Li

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

A 128-channel picoammeter system is constructed based on instrumentation amplifiers. Taking the advantages of high electric potential and narrow bandwidth in DC energetic charged beam measurements, current resolution better than 5 fA can be achieved. Two 128-channel Faraday cup arrays are built, and are employed for ion and electron beam current distribution measurements. Tests with 60 keV O3+ ions and 2 keV electrons show that it can provide exact boundaries when a positive charged particle beam current distribution is measured.

Keywords

picoammeter instrumentation amplifier Faraday cup array charged particle beam current distribution beam diagnostics low current measurement

Cite

@article{arxiv.1509.09021,
  title  = {A 128-channel picoammeter system and its application on charged particle beam current distribution measurements},
  author = {Deyang Yu and Junliang Liu and Yingli Xue and Mingwu Zhang and Xiaohong Cai and Jianjun Hu and Jinmei Dong and Xin Li},
  journal= {arXiv preprint arXiv:1509.09021},
  year   = {2017}
}

Comments

6 piges, 8 figures; Submitted to Review of Scientific Instruments

A 128-channel picoammeter system and its application on charged particle beam current distribution measurements

Abstract

Keywords

Cite

Comments

Related papers