The Needle Chamber : A New Type of X-Y Detector Using the Properties of Gaseous Multiplication

A new type of detector, based on gaseous multiplication is presented here under. It is made of needle arrays, each needle behaving as an independent proportional counter. Thus, it has advantages of multiwire-proportional chambers and many others, mainly high-counting rate per surface unit, high mechanical reliability. All these features make this counter of large interest in a lot of fields of works.