19 July 2010 Development of a 3D CZT detector prototype for Laue Lens telescope
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Abstract
We report on the development of a 3D position sensitive prototype suitable as focal plane detector for Laue lens telescope. The basic sensitive unit is a drift strip detector based on a CZT crystal, (~19×8 mm2 area, 2.4 mm thick), irradiated transversally to the electric field direction. The anode side is segmented in 64 strips, that divide the crystal in 8 independent sensor (pixel), each composed by one collecting strip and 7 (one in common) adjacent drift strips. The drift strips are biased by a voltage divider, whereas the anode strips are held at ground. Furthermore, the cathode is divided in 4 horizontal strips for the reconstruction of the third interaction position coordinate. The 3D prototype will be made by packing 8 linear modules, each composed by one basic sensitive unit, bonded on a ceramic layer. The linear modules readout is provided by a custom front end electronics implementing a set of three RENA-3 for a total of 128 channels. The front-end electronics and the operating logics (in particular coincidence logics for polarisation measurements) are handled by a versatile and modular multi-parametric back end electronics developed using FPGA technology.
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Ezio Caroli, Ezio Caroli, Natalia Auricchio, Natalia Auricchio, Stefano Del Sordo, Stefano Del Sordo, Leonardo Abbene, Leonardo Abbene, Carl Budtz-Jørgensen, Carl Budtz-Jørgensen, Fabio Casini, Fabio Casini, Rui M. Curado da Silva, Rui M. Curado da Silva, Irfan Kuvvetlli, Irfan Kuvvetlli, Luciano Milano, Luciano Milano, Lorenzo Natalucci, Lorenzo Natalucci, Egidio M. Quadrini, Egidio M. Quadrini, John B. Stephen, John B. Stephen, Pietro Ubertini, Pietro Ubertini, Massimiliano Zanichelli, Massimiliano Zanichelli, Andrea Zappettini, Andrea Zappettini, "Development of a 3D CZT detector prototype for Laue Lens telescope", Proc. SPIE 7742, High Energy, Optical, and Infrared Detectors for Astronomy IV, 77420V (19 July 2010); doi: 10.1117/12.858120; https://doi.org/10.1117/12.858120
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