Indian Payloads (RT-2 Experiment) Onboard CORONAS-PHOTON Mission

摘要

RT-2 Experiment (RT - Roentgen Telescope) is a low energy gamma-rayinstrument which is designed and developed as a part of Indo-Russiancollaborative project of CORONAS-PHOTON Mission to study the Solar flares inwide energy band of electromagnetic spectrum ranging from UV to high-energygamma-rays (~2000 MeV). RT-2 instruments will cover the energy range of 15 keV to 150 keV extendableup to ~1 MeV. It consists of three detectors (two Phoswich detectors, namely,RT-2/S, RT-2/G and one solid-state imaging detector RT-2/CZT) and oneprocessing electronic device (RT-2/E). Both Phoswich detectors will have timeresolved spectrum, whereas the solid-state imaging detector will have highresolved image of the solar flares in hard X-rays. We have used Co-57 (122 keV)radio-active source for onboard calibration of all three detectors. In thispaper, we briefly discuss the in-flight performance of RT-2 instruments andpresent initial flight data from the instruments. This mission was launched into polar LEO (Low Earth Orbit) (~550 km) on 30thJanuary 2009 from Plesetsk Cosmodrome, Russia.