The development of new focusing optics based on wide band Laue lenses operating from ~60 keV up to several hundred
keV is particularly challenging. This type of hard X-ray or gamma ray optics requires a high performance focal plane
detector in order to exploit to the best their intrinsic capabilities. We describe a three dimensional (3D) position sensitive
detector prototype suitable as the basic module for a high efficiency Laue lens focal plane detector. This detector
configuration is currently under study for use in a balloon payload dedicated to performing a high significance
measurement of the polarization status of the Crab between 100 and 500 keV. The prototype is made by packing 8 linear
modules, each composed of one basic sensitive unit bonded onto a thin supporting ceramic layer. Each unit is a drift strip
detector based on a CZT crystal, irradiated transversally to the electric field direction. The anode is segmented into 8
detection cells, each comprising one collecting strip and 8 surrounding drift strips. The drift strips are biased by a voltage
divider. The cathode is divided into 4 horizontal strips for the reconstruction of the Z interaction position. The detector
readout electronics is based on RENA-3 ASIC and the data handling system uses a custom electronics based on FPGA to
provide the ASIC setting, the event handling logic, and the data acquisition. This paper mainly describes the components
and the status of the undergoing activities for the construction of the proposed 3D CZT prototype and shows the results
of the electronics tests.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
N. Auricchio ; E. Caroli ; A. Basili ; G. Benassi ; C. Budtz Jørgensen, et al.
Development status of a CZT spectrometer prototype with 3D spatial resolution for hard x-ray astronomy
", Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 84530S (September 25, 2012); doi:10.1117/12.928327; http://dx.doi.org/10.1117/12.928327