Xcalibur II manual

SPECIFICATIONS

3.3.4 Onyx CCD Detector

Active area

CCD chip

Pixel size on scintillator

Scintillator material

Fibre optic reduction

165 mm

Kodak KAF4301-E

60 µm

Gadox

Peltier cooling

Temperature stability

2.5:1; low distortion reduction taper

-50ºC (four stage cooler)

± 0.05ºC(micro-processor PID)

Analogue-to-digital resolution

System noise (so-called read noise)

True 17 bit

10 e

-

RMS

<0.06 e

-

/pix.s Dark current

Control processor

Communication

MC 68322

2 mono-directional fibre-optic taxi channels

Correlated double sampling (CDS) speed 1.5 MHz

Readout time (complete duty cycle including chip readout, CDS, analogue-todigital conversion, transfer detector-PC, disk storage)

2.8 s (4 x 4 binning)

4.4 s (2 x 2 binning)

3.3.4.1 Onyx CCD Detector Theta and Resolution Ranges

Detector to sample distance

60 mm

Detector position minimum

Detector position maximum

Maximum resolution in 2 theta

Maximum resolution in d-value (Mo)

Detector opening angle

-90.0°

112.0°

144.6°

0.373 Å

65.3°

80 mm

-102.0°

119.0°

146.7°

0.371 Å

55.4°

100 mm

-111.0°

126.0°

149.7°

0.368 Å

41.0°

Version 1.4 Xcalibur_Manual_v1.4

Page 11

Xcalibur

USER MANUAL