The angle detecting inclined sensor (ADIS) system: Measuring particle angles of incidence without position sensing detectors

Details The angle detecting inclined sensor (ADIS) system: Measuring particle angles of incidence without position sensing detectors The angle detecting inclined sensor (ADIS) system: Measuring particle angles of incidence without position sensing detectors

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003eaeja.....7276c&link_type=abstract

EGS - AGU - EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 - 11 April 2003, abstract #7276

Computer Science

Scientific paper

We report on a novel system, the Angle Detecting Inclined Sensors (ADIS), for determining the angles of incidence of Solar energetic particles, Galactic cosmic rays and anomalous cosmic rays. This system would be especially applicable to compact, high-resolution energetic particle telescopes. The response of a charged particle detector to incident particles varies with particle's pathlength, which depends upon its angle of incidence to the detector. Achieving good elemental and isotopic resolution requires correcting for this effect. ADIS consists of three detectors, two of which are inclined at an angle to the telescope axis, forming the first detectors in a multi-element telescope. By comparing the signals from the ADIS detectors, the angle of incidence may be determined. Thus the ADIS system can replace hodoscopes using conventional position sensing detectors (PSD's). PSD's add significant complexity and require additional electronics, increasing instrument mass, power usage and, in many cases, telemetry requirements. Using our ADIS system, we derive simple equations for the incident particle charge and trajectory. These calculations are well within the capabilities of even the slowest on-board processor. We present Monte-Carlo modeling of such an instrument to demonstrate the system's capabilities.

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