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

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

Sep 30, 2015

6 pages

Published in:

Rev.Sci.Instrum. 86 (2015) 11, 115102

Published: Nov 3, 2015

e-Print:

1509.09021 [physics.ins-det]

DOI:

10.1063/1.4934849

View in:

ADS Abstract Service

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Abstract: (AIP)

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 beamcurrent 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.

Note:

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

Electrodes
Electric currents
Electrical resistivity
Resistors
Capacitors

References(50)

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