Development of a One-Dimensional Counting Detector for Diffraction Experiments at a Synchrotron Radiation Beam

The article describes a one-coordinate detector for diffraction experiments on a synchrotron radiation beam. The detector is being developed at the Budker Institute of Nuclear Physics SB RAS. Until recently the Institute was developing gas one-coordinate detectors, in particular a one-coordinate detector with calculated channels OD-3M, based on the technology of multi-wire proportional cameras. To provide a spatial resolution of better than 100 microns at photon energy in a wide energy range (3–30 keV), it is necessary to use solid-state microstrip or matrix sensors in combination with specialized integrated registration circuits. The developed SOCOD detector, using a microstrip sensor based on gallium arsenide as a recording element, operates in the mode of direct counting of photons with an energy of more than 3–4 keV and a speed of up to 1 MHz/channel. The article gives a general description of the current version of the detector, the block diagram of the recording channel, the software that allows users to control the operation of the detector and display the results obtained, and the developed algorithm for leveling the trigger thresholds in the channels. The results of electronic tests, the work of the alignment algorithm and their discussion are presented.