Charged Particle Monitor on the AstroSat mission

A. R. Rao , M. H. Patil , Yash Bhargava , Rakesh Khanna , M. K. Hingar , A. P. K. Kutty , J. P. Malkar , Rupal Basak

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S. Sreekumar Essy Samuel P. Priya P. Vinod D. Bhattacharya V. Bhalerao S. V. Vadawale N. P. S. Mithun R. Pandiyan K. Subbarao S. Seetha K. Suryanarayana Sarma

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classification 🌌 astro-ph.IM physics.ins-det

keywords particlechargedastrosatcalibrationcountsdetectgroundmonitor

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Charged Particle Monitor (CPM) on-board the AstroSat satellite is an instrument designed to detect the flux of charged particles at the satellite location. A Cesium Iodide Thallium (CsI(Tl)) crystal is used with a Kapton window to detect protons with energies greater than 1 MeV. The ground calibration of CPM was done using gamma-rays from radioactive sources and protons from particle accelerators. Based on the ground calibration results, energy deposition above 1 MeV are accepted and particle counts are recorded. It is found that CPM counts are steady and the signal for the onset and exit of South Atlantic Anomaly (SAA) region are generated in a very reliable and stable manner.

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Charged Particle Monitor on the AstroSat mission

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