...

See text.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

...thickness

Data analysis choices can alter the relative quantum efficiency advantage of FI vs. BI chips. In particular low energy events in BI devices are nearly always split into more than one pixel, while the reverse is true in FI devices. Thus in routine analysis FI devices are processed using only single and singly split events, while BI devices are processed using doubly and triply split events as well. Fig. 4.11 compares quantum efficiency for these grade selections. The FI chips can be processed with the additional events as well, which would enhance the high energy quantum efficiency, at the price of degrading spectral resolution.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.