Istituto dei materiali per l'elettronica ed il magnetismo     
Caroli E., Auricchio N., Del Sordo S., Abbene L., Budtz-Jørgensen C., Casini F., Curado da Silva R. M., Kuvvetlli I., Milano L., Natalucci L., Quadrini E. M., Stephen J. B., Ubertini P., Zanichelli M., Zappettini A. Development of a 3D CZT detector prototype for Laue Lens telescope. In: Proceedings of SPIE-The International Society for Optical Engineering, vol. 7742 pp. 231 - 236. SPIE-INT SOC OPTICAL ENGINEERING, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA, 2010.
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, (similar to 19x8 mm(2) 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.
URL: http://dx.doi.org/10.1117/12.858120
DOI: 10.1117/12.858120

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