<PRE>
-MIT direct illumination CCD:
The detector is a Princeton Instruments Direct-Illumination CCD camera
(PI.LCX:1242) manufactered by Roper Scientific, Trenton, NJ.
It contains an EEV Model 37, thermoelectrically cooled CCD chip with a
1152X1242 grid of 22.5 micron wide square pixels.
The quantum efficiency of the detector for 7.66 keV was about 20%.
Readout time between successive full-frame exposures was either 1.6 or
3.2 s, depending on the wether the detector's fast (12 bit) or slow (16 bit)
ADC was used.
june,2001
We have characterised the DI CCD camera using images from Fe3Al (1/2 1/2 1/2)
superlattice peak. We have processed the CCD frame using the droplet algorithm.
we have found that there is 392 ADU's per photon.
There is a spread of the incident photon over 3 pixels.
june,2002
The EEV Model 37 CCD chip was replaced by a new one
We have characterised the DI CCD camera using images from the Aerogel X14.
we have found that there is 392 ADU's per photon. |