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arXiv · 1803.02894

RHIP, a Radio-controlled High-Voltage Insulated Picoammeter and its usage in studying ion backflow in MPGD-based photon detectors

M. Bari·B. Gobbo·S. Dalla Torre·M. Gregori·S. Levorato·G. Menon·F. Tessarotto
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Abstract

A picoammeter system has been developed and engineering. It consists in a current-voltage converter, based on an operational amplifier with very low input current, a high precision ADC, a radio controlled data acquisition unit and the computer-based control, visualization and storage. The precision is of the order of a tenth of picoampers and it can measure currents between electrodes at potentials up to 8 kV. The system is battery powered and a number of strategies have been implemented to limit the power consumption. The system is designed for multichannel applications, up to 256 parallel channels. The overall implementation is cost-effective to make the availability of multichannel setups easily affordable. The design, implementation and performance of the picoammeter system are described in detail as well as a an application: the measurement of ion backflow in MPGD-based photon detectors.

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M. Bari, B. Gobbo, S. Dalla Torre, M. Gregori, S. Levorato, G. Menon, F. Tessarotto. 2018-03-06. RHIP, a Radio-controlled High-Voltage Insulated Picoammeter and its usage in studying ion backflow in MPGD-based photon detectors. https://arxiv.org/abs/1803.02894

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