A position- and time-sensitive photon-counting detector with delay-line read-out

Details A position- and time-sensitive photon-counting detector with delay-line read-out A position- and time-sensitive photon-counting detector with delay-line read-out

2007-03-19

arxiv.org/abs/physics/0703186v1

Physics

Instrumentation and Detectors

Proceedings of SPIE Conference "Optics and Optoelectronics", 16 - 19. Apr.2007

Scientific paper

10.1117/12.721933

We have developed image intensifier tubes with delay-anode read-out for time- and position-sensitive photon counting. The timing precision is better than 1 ns with 1000x1000 pixels position resolution and up to one megacounts/s processing rate. Large format detectors of 40 and 75 mm active diameter with internal helical-wire delay-line anodes have been produced and specified. A different type of 40 and 25 mm tubes with semi-conducting screen for image charge read-out allow for an economic and robust tube design and for placing the read-out anodes outside the sealed housing. Two types of external delay-line anodes, i.e. pick-up electrodes for the image charge, have been tested. We present tests of the detector and anode performance. Due to the low background this technique is well suited for applications with very low light intensity and especially if a precise time tagging for each photon is required. As an example we present the application of scintillator read-out in time-of-flight (TOF) neutron radiography. Further applications so far are Fluorescence Life-time Microscopy (FLIM) and Astronomy

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