Custom CCD for adaptive optics applications
2006
ESO and JRA2 OPTICON have funded e2v technologies to develop a compact packaged Peltier cooled 24 μm square
240x240 pixels split frame transfer 8-output back-illuminated L3Vision CCD3, L3Vision CCD for Adaptive Optic Wave
Front Sensor (AO WFS) applications. The device is designed to achieve sub-electron read noise at frame rates from 25
Hz to 1,500 Hz and dark current lower than 0.01 e-/pixel/frame. The development has many unique features. To obtain
high frame rates, multi-output EMCCD gain registers and metal buttressing of row clock lines are used. The baseline
device is built in standard silicon. In addition, a split wafer run has enabled two speculative variants to be built; deep
depletion silicon devices to improve red response and devices with an electronic shutter to extend use to Rayleigh and
Pulsed Laser Guide Star applications. These are all firsts for L3Vision CCDs. The designs of the CCD and Peltier
package have passed their reviews and fabrication has begun. This paper will describe the progress to date, the
requirements and the design of the CCD and compact Peltier package, technology trade-offs, schedule and proposed test
plan. High readout speed, low noise and compactness (requirement to fit in confined spaces) provide special challenges
to ESO's AO variant of its NGC, New General detector Controller to drive this CCD. This paper will describe progress
made on the design of the controller to meet these special needs.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
9
References
16
Citations
NaN
KQI