Development of a 3D CZT detector prototype for Laue Lens telescope
- Authors: 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.
- Publication year: 2010
- Type: Contributo in atti di convegno pubblicato in volume
- OA Link: http://hdl.handle.net/10447/50614
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.