Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

This project involves a collaboration between KA Imaging (Kitchener, ON) and the Simon Fraser Universityx000D
(SFU), Physics Dept. KA Imaging will provide a prototype camera for imaging transmitted helium ions in anx000D
existing helium ion microscope (HIM) at SFU. The camera will consist of an array of photoconductivex000D
amorphous-selenium (a-Se) pixels integrated with a low-noise complementary metal-oxide semiconductorx000D
(CMOS) read-out circuitry. The capabilities of the camera including resolution, sensitivity, response time, andx000D
reliability will be evaluated. This will be a new application for this company who currently manufactures ax000D
range of x-ray imaging tools for medical, veterinarian, and industrial applications. The expected camera pixelx000D
spacing feasible, as small as 8 microns, would increase the resolution by a factor 7 compared to the existingx000D
Si-based p-i-n diodes array camera already operating in the HIM at SFU. The amorphous nature of the primaryx000D
component of the camera, a-Se, is naturally less susceptible to radiation damage and is, therefore, expected tox000D
be more reliable than crystalline Si pixels. If successful, the camera will further the development of a newx000D
imaging technique called transmission He ion microscopy (THIM) of likely interest to other HIM systemsx000D
internationally (3 other HIMs in Canada, 50 international). The technique may potentially challengex000D
transmission electron microscopy with better resolution and sensitivity to atomic defects given the smallerx000D
wavelength and larger interaction cross-sections for He ions (30 kV) compared to electrons (200 kV).