Double-side Silicon Strip Detector (DSSD) with VA32TA applied for medium energy particle detector in high-count rate environment

We are developing a medium energy particle detector in the high-count rate environment in order to solve the acceleration mechanism and the process of high-energy particle on the collision-less plasma shock region in the space. The key observation is to measure the maximum energy of accelerated particles correctly. It is important to reduce the pile up events in order to measure the correct maximum energy. The new developed detector for high-count rate environment consists of the Double-sided Silicon Strip Detector (DSSD) and the readout LSI chips VA32TA made by IDEA. The performance of the new DSSD system for charged particles was tested using proton beams with energy of 6 MeV from the medium energy accelerator in HIMAC of the National Institute for Radiological Science. It is result that the new DSSD system works well and has high performance to detect not only x-rays but also charged particles. It is certain that this new DSSD system can measure correct energy of incident particles in high-count rate environment using the accelerator.