We need to instantiate the gate structure, incorporating the correct geometry and calculating the absorption coefficients appropriate for the gate structure materials using the data of Prigozhin et al. Prigozhin98. This will make our code more applicable to quantum efficiency tuning and simulation.
Effects of CTI are seen in the calibration data, especially for the BI chips. We will make available our results when we feel we can understand the phenomena reliably.
In spite of its limitations, the current incarnation of the frame simulator
is useful for addressing timely issues in CCD characterization. The code
has been used to develop an algorithm to determine sub-pixel positions
of photons and to assess the problems associated with photon pile-up from
bright uniform beams and bright point sources. It has been used in conjunction
with SAOSAC and MARX to model the XRCF PSF (see Chapter 6).
Event lists generated by this simulator are being used by the ASC to generate
ACIS response matrices.