A Trajectory Sensor for Sub-micron Sized Dust

Details A Trajectory Sensor for Sub-micron Sized Dust A Trajectory Sensor for Sub-micron Sized Dust

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007esasp.643..213s&link_type=abstract

Workshop on Dust in Planetary Systems (ESA SP-643). September 26-30 2005, Kauai, Hawaii. Editors: Krueger, H. and Graps, A., p.2

Computer Science

Performance

3

Scientific paper

Dust particles' trajectories are determined by the measurement of the electric signals that are induced when a charged grain flies through a position sensitive electrode system. The objective of the trajectory sensor is to measure dust charges in the range 10^{-16} to 10^{-13} C and dust speeds in the range 6 to 100 km/s. The trajectory sensor has four sensor planes consisting of about 16 wire electrodes each. Two adjacent planes have orthogonal wire direction. A charge sensitive amplifier ASIC has been developed with a RMS noise of about 1.5 times 10^{-17} C. The signals from 32 electrodes are digitized and sampled at 25 MHz rate by an transient recorder ASIC (Application Specific Integrated Circuit). First tests with a laboratory set-up have been performed and demonstrate the expected performance.

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