JEM-X : the X-ray monitor on INTEGRAL

The INTEGRAL X-ray monitor, JEM-X, (toghther with the two gamma ray instruments, SPI and IBIS) provides simultaneous imaging with arcminute angular resolution in the 3-35 KeV band. The good angular resolution and low energy response of Jem-X plays an important role in the detection and identification of gamma ray sources as well as in the analysis and scintific interpretation of the combined X-ray and gamma ray data. Jem-X is a coded aperture X-ray telescope consisting of two identical detectors. Each detector has a sensitive area of 500 cm^2, and views the sky through its own coded aperture mask. The coded mask are located 3.4 m above the detecor windows. The detector field of view is constrained by X-ray collimator

JEM-X: The X-ray monitor aboard INTEGRAL

The JEM–X monitor provides X-ray spectra and imaging with arcminute angular resolution in the 3 to 35 keV band. The good angular resolution and the low energy response of JEM–X plays an important role in the identification of gamma ray sources and in the analysis and scientific interpretation of the combined X-ray and gamma ray data. JEM–X is a coded aperture instrument consisting of two identical, coaligned telescopes. Each of the detectors has a sensitive area of 500 cm2, and views the sky through its own coded aperture mask. The two coded masks are inverted with respect to each other and provides an angular resolution of 3' across an effective field of view of about 10° diameter