Silicon X-ray Array

Detector array

SIXA is a multielement X-ray photon counting spectrometer. It consists of 19 discrete hexagonally arranged circular elements with a centreline distance of 12 mm . The detector material is lithium-drifted silicon (Si(Li)). Silicon wafers of 3 mm thickness are used for the fabrication of the detector. A radiative cooler is used to bring the detector to the proper operating temperature (120-130 K), and aluminium coated polyimide windows are used to filter out IR/visible/UV light. Table 1 gives a summary of the properties of SIXA.