Imaging gaseous detector based on micro-processing technology

The development of gaseous detectors has been exciting again since the appearance of a MicroStrip Gas Chamber (MSGC) in 1988, which is made using a micro-electronics technology. These days lots of variations of the advanced gaseous detectors are being intensively studied in the world. We have developed the two-dimensional MSGC having a 10 cm square detection area and the ultra fast readout system for a real-time X-ray imaging. The MSGC was made using Multi-Chip Module (MCM) technology, has a very thin substrate of 17 μm and lots of thin anodes as well as back strips both with 200 μm pitches. This enables us to get fast digital X-ray images recording both the timing and an energy of each X-ray photon. In addition, an intermediate gas multiplier has been realized using a capillary plate having a conductive surface of a capillary. The MSGC combined with the conductive capillary plate can be steadily operated with a high gain under intense irradiation. Here, we also report new approaches of X-ray crystal structure analyses using timing information obtained by the MSGC.