In astrophysics, hard X- and soft γ-ray polarimetry has had limited development. To date, no dedicated polarimeters have ever been launched into space. However, previous Monte Carlo simulations and prototype experimental studies have been carried out by the authors in order to evaluate the polarimetric performance of pixelised CZT matrices. We have applied this MonteCarlo code to the case of a CZT pixel instrument proposed as a Gamma-ray burst monitor (GRBM) for an X-ray payload on board the International Space Station (ISS): the LOBSTER experiment, which has already successfully passed the ESA Phase A study for a future flight in 2009. Herein we present the results of the study of the 4 detection units that compose the GRBM detector. Each of these units is a 24 × 12 matrix of CZT elementary crystals and the pixels have a cross section of 8 × 8 mm2, giving an active area of about 184 cm3 for each unit. The detector thickness is nominally 3 mm, with a maximum of 5 mm should this thickne...
Polarimetric Performance Study of a CZT Gamma-Ray Burst Monitor Concept
FRONTERA, Filippo;
2006
Abstract
In astrophysics, hard X- and soft γ-ray polarimetry has had limited development. To date, no dedicated polarimeters have ever been launched into space. However, previous Monte Carlo simulations and prototype experimental studies have been carried out by the authors in order to evaluate the polarimetric performance of pixelised CZT matrices. We have applied this MonteCarlo code to the case of a CZT pixel instrument proposed as a Gamma-ray burst monitor (GRBM) for an X-ray payload on board the International Space Station (ISS): the LOBSTER experiment, which has already successfully passed the ESA Phase A study for a future flight in 2009. Herein we present the results of the study of the 4 detection units that compose the GRBM detector. Each of these units is a 24 × 12 matrix of CZT elementary crystals and the pixels have a cross section of 8 × 8 mm2, giving an active area of about 184 cm3 for each unit. The detector thickness is nominally 3 mm, with a maximum of 5 mm should this thickne...I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
