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.
Original language | English |
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Journal | Proceedings of SPIE, the International Society for Optical Engineering |
Volume | 7742 |
Pages (from-to) | 77420V |
ISSN | 0277-786X |
DOIs | |
Publication status | Published - 2010 |
Event | High Energy, Optical, and Infrared Detectors for Astronomy - San Diego, California United States Duration: 1 Jan 2010 → … Conference number: 4 |
Conference
Conference | High Energy, Optical, and Infrared Detectors for Astronomy |
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Number | 4 |
City | San Diego, California United States |
Period | 01/01/2010 → … |
Keywords
- 3D imaging
- CZT detector
- Drift strip
- Gamma ray spectroscopy
- Hard X- and soft gamma-ray astronomy