We propose a novel high performance radiation detector & imaging sensor by a ground-breaking core-shell diode array design1. This novel detector avoids the performance limitations of the conventional planar silicon drift detectors (SDDs) in respect to radiation hardness, spatial resolution, power consumption and slow signal response, and will perform far beyond state-of-the-art.
This kind of detectors will provide solutions for various fundamental research fields currently limited by instrumentation such as high energy physics (HEP), astronomy and x-ray based protein crystallography measurements at extreme count rate.
The core-shell particle detectors are expected to have the following properties which are highly promising for the requirements at CERN for the upgraded LHC or next generation high luminosity particle accelerators.
• Ultrahigh radiation hardness beyond state-of-the-art
• High spatial resolution (high granularity)
• Fast signal response (for measurements at high count rate)
• Low power consumption (cooling of detectors might be omitted)
• High sensitivity
These properties can be integrated into a single detector, and so that a series of new applications in HEP, astrophysics, and protein crystallography will be enabled.
A prototype has been developed by using state-of-the-art nanotechnology and device processing2, and the functionality has been tested by electron beam induced current (EBIC).
IPHT has patented this concept (DE 10 2014 104 602 (granted on 07.Jan.2015), Hartpartikeldetektor mit einem Kern-Schale-Aufbau und Array dieser Hartpartikeldetektoren) for the application of high performance particle detectors, however, these diode array can be widely used in other spectral range as high performance photodiodes and imaging sensors.
- G. Jia, J. Plentz, I. Höger, J. Dellith, A. Dellith and F. Falk, Core-Shell Diodes for Particle Detectors, J. Phys. D: Appl. Phys. 49, 065106 (2016).
- G. Jia, J. Westphalen, J. Drexler, J. Plentz, J. Dellith, A. Dellith, G. Andrä and F. Falk, Ordered Silicon Nanowire Arrays Prepared by an Improved Nanospheres Self-Assembly in Combination with Ag-Assisted Wet Chemical Etching, Photonics and Nanostructures-Fundamentals and Applications, in press (2016).