2 research outputs found
Instruments of RT-2 Experiment onboard CORONAS-PHOTON and their test and evaluation IV: Background Simulations using GEANT-4 Toolkit
Hard X-ray detectors in space are prone to background signals due to the
ubiquitous cosmic rays and cosmic diffuse background radiation that
continuously bombards the satellites which carry the detectors. In general, the
background intensity depends on the space environment as well as the material
surrounding the detectors. Understanding the behavior of the background noise
in the detector is very important to extract the precise source information
from the detector data. In this paper, we carry out Monte Carlo simulations
using the GEANT-4 toolkit to estimate the prompt background noise measured with
the detectors of the RT-2 Experiment onboard the CORONAS-PHOTON satellite.Comment: 21 pages, 10 figures, Accepted for publication in Experimental
Astronomy (in press
Instruments of RT-2 Experiment onboard CORONAS-PHOTON and their test and evaluation II: RT-2/CZT payload
Cadmium Zinc Telluride (CZT) detectors are high sensitivity and high
resolution devices for hard X-ray imaging and spectroscopic studies. The new
series of CZT detector modules (OMS40G256) manufactured by Orbotech Medical
Solutions (OMS), Israel, are used in the RT-2/CZT payload onboard the
CORONAS-PHOTON satellite. The CZT detectors, sensitive in the energy range of
20 keV to 150 keV, are used to image solar flares in hard X-rays. Since these
modules are essentially manufactured for commercial applications, we have
carried out a series of comprehensive tests on these modules so that they can
be confidently used in space-borne systems. These tests lead us to select the
best three pieces of the 'Gold' modules for the RT-2/CZT payload. This paper
presents the characterization of CZT modules and the criteria followed for
selecting the ones for the RT-2/CZT payload. The RT-2/CZT payload carries,
along with three CZT modules, a high spatial resolution CMOS detector for high
resolution imaging of transient X-ray events. Therefore, we discuss the
characterization of the CMOS detector as well.Comment: 26 pages, 19 figures, Accepted for publication in Experimental
Astronomy (in press