Development of a next-generation X-ray area detecter : X-ray HARPFEA detector

Photon Factory, IMSS/KEK* NHK science and technical research laboratories** NHK engineering service***
â—‹Toshinobu Miyoshi* Soichi Wakatsuki* Noriyuki Igarashi* Naohiro Matsugaki* Yusuke Yamada* Keiichi Hirano* Kazuyuki Hyodo* Masanori Kobayashi* Kenkichi Tanioka** Norifumi Egami** Misao Kubota** Teruo Kawai***

We are now developing the X-ray high-gain avalanche rushing amorphous photoconductor (HARP) detector in collaboration with NHK Engineering Service (NHK-ES), funded by the 'Development of Systems and Technology for Advanced Measurement and Analysis' program (FY2004-2009) of the Japan Science and Technology Agency (JST). The purpose of the program is to develop a new measurement system for biological macromolecules based on the HARP detector system coupled with a micro-focus beamline optimized for smaller size crystals. The detector consists mainly of amorphous selenium membrane and a matrix field emitter array (FEA). Characteristics of membrane avalanche effect and the single driven FEA show the following advantages over the currently available area detectors: (1) higher sensitivity, (2) higher spatial resolution, (3) a higher framing rate, and (4) other characteristics such as lower noise and radiation hardness. The maximum framing rate (120 frames/sec) matches the frequency of the next generation light source such as Energy Recovery Light source (ERL). The evaluation experiment of a prototype HARP-FEA detector has been performed with synchrotron light source in Photon Factory in KEK. In the presentation, the results will be shown.