Abstract Details
| Name: J S Yadav Affiliation: TIFR, Mumbai Conference ID: ASI2015_756 Title : Calibration of LAXPC instrument onboard ASTROSAT Authors and Co-Authors : LAXPC team Abstract Type : Oral Abstract Category : Instrumentation and Techniques Abstract : The LAXPC instrument onboard ASTROSAT consists of three large area X-ray proportional counters for X-ray timing and spectral studies in 3-80 keV energy range. The instrument consists of three co-aligned identical detectors, each with a multilayer con guration. Calibration of all the three units, was done at ISAC two meter thermovac facility during 2013-14 using three radioactive sources and specially designed calibration unit. GEANT4 simulations of the detectors were also performed and matched with actual data from calibration sources. The energy resolution is about 12% at high energies (> 20 keV) and about 22% at 6 keV. The eff ective area of three unit combined is 0.8 m square in energy range 8-20 keV and drops to half of this value at 80 keV. The FWHM of the field of view is about 43 arc minute at 15 keV and about 47 arc minute at 50 keV. |