A 128-channel picoammeter system and its application on charged particle beam current distribution measurements
Journal Article
·
· Review of Scientific Instruments
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000 (China)
A 128-channel picoammeter system is constructed based on instrumentation amplifiers. Taking advantage of a high electric potential and narrow bandwidth in DC energetic charged beam measurements, a current resolution better than 5 fA can be achieved. Two sets of 128-channel strip electrodes are implemented on printed circuit boards and are employed for ion and electron beam current distribution measurements. Tests with 60 keV O{sup 3+} ions and 2 keV electrons show that it can provide exact boundaries when a positive charged particle beam current distribution is measured.
- OSTI ID:
- 22482614
- Journal Information:
- Review of Scientific Instruments, Vol. 86, Issue 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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